3.136 \(\int e^{\frac{1}{4} \tanh ^{-1}(a x)} x \, dx\)

Optimal. Leaf size=619 \[ -\frac{(1-a x)^{7/8} (a x+1)^{9/8}}{2 a^2}-\frac{(1-a x)^{7/8} \sqrt [8]{a x+1}}{8 a^2}-\frac{\sqrt{2-\sqrt{2}} \log \left (\frac{\sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}-\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+1\right )}{64 a^2}+\frac{\sqrt{2-\sqrt{2}} \log \left (\frac{\sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+1\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \log \left (\frac{\sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}-\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+1\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \log \left (\frac{\sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+1\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}-\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}-\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+\sqrt{2-\sqrt{2}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+\sqrt{2+\sqrt{2}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2} \]

[Out]

-((1 - a*x)^(7/8)*(1 + a*x)^(1/8))/(8*a^2) - ((1 - a*x)^(7/8)*(1 + a*x)^(9/8))/(2*a^2) + (Sqrt[2 + Sqrt[2]]*Ar
cTan[(Sqrt[2 - Sqrt[2]] - (2*(1 - a*x)^(1/8))/(1 + a*x)^(1/8))/Sqrt[2 + Sqrt[2]]])/(32*a^2) + (Sqrt[2 - Sqrt[2
]]*ArcTan[(Sqrt[2 + Sqrt[2]] - (2*(1 - a*x)^(1/8))/(1 + a*x)^(1/8))/Sqrt[2 - Sqrt[2]]])/(32*a^2) - (Sqrt[2 + S
qrt[2]]*ArcTan[(Sqrt[2 - Sqrt[2]] + (2*(1 - a*x)^(1/8))/(1 + a*x)^(1/8))/Sqrt[2 + Sqrt[2]]])/(32*a^2) - (Sqrt[
2 - Sqrt[2]]*ArcTan[(Sqrt[2 + Sqrt[2]] + (2*(1 - a*x)^(1/8))/(1 + a*x)^(1/8))/Sqrt[2 - Sqrt[2]]])/(32*a^2) - (
Sqrt[2 - Sqrt[2]]*Log[1 + (1 - a*x)^(1/4)/(1 + a*x)^(1/4) - (Sqrt[2 - Sqrt[2]]*(1 - a*x)^(1/8))/(1 + a*x)^(1/8
)])/(64*a^2) + (Sqrt[2 - Sqrt[2]]*Log[1 + (1 - a*x)^(1/4)/(1 + a*x)^(1/4) + (Sqrt[2 - Sqrt[2]]*(1 - a*x)^(1/8)
)/(1 + a*x)^(1/8)])/(64*a^2) - (Sqrt[2 + Sqrt[2]]*Log[1 + (1 - a*x)^(1/4)/(1 + a*x)^(1/4) - (Sqrt[2 + Sqrt[2]]
*(1 - a*x)^(1/8))/(1 + a*x)^(1/8)])/(64*a^2) + (Sqrt[2 + Sqrt[2]]*Log[1 + (1 - a*x)^(1/4)/(1 + a*x)^(1/4) + (S
qrt[2 + Sqrt[2]]*(1 - a*x)^(1/8))/(1 + a*x)^(1/8)])/(64*a^2)

________________________________________________________________________________________

Rubi [A]  time = 0.481502, antiderivative size = 619, normalized size of antiderivative = 1., number of steps used = 26, number of rules used = 12, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 1., Rules used = {6126, 80, 50, 63, 331, 299, 1122, 1169, 634, 618, 204, 628} \[ -\frac{(1-a x)^{7/8} (a x+1)^{9/8}}{2 a^2}-\frac{(1-a x)^{7/8} \sqrt [8]{a x+1}}{8 a^2}-\frac{\sqrt{2-\sqrt{2}} \log \left (\frac{\sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}-\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+1\right )}{64 a^2}+\frac{\sqrt{2-\sqrt{2}} \log \left (\frac{\sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+1\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \log \left (\frac{\sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}-\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+1\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \log \left (\frac{\sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+1\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}-\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}-\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+\sqrt{2-\sqrt{2}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{a x+1}}+\sqrt{2+\sqrt{2}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2} \]

Antiderivative was successfully verified.

[In]

Int[E^(ArcTanh[a*x]/4)*x,x]

[Out]

-((1 - a*x)^(7/8)*(1 + a*x)^(1/8))/(8*a^2) - ((1 - a*x)^(7/8)*(1 + a*x)^(9/8))/(2*a^2) + (Sqrt[2 + Sqrt[2]]*Ar
cTan[(Sqrt[2 - Sqrt[2]] - (2*(1 - a*x)^(1/8))/(1 + a*x)^(1/8))/Sqrt[2 + Sqrt[2]]])/(32*a^2) + (Sqrt[2 - Sqrt[2
]]*ArcTan[(Sqrt[2 + Sqrt[2]] - (2*(1 - a*x)^(1/8))/(1 + a*x)^(1/8))/Sqrt[2 - Sqrt[2]]])/(32*a^2) - (Sqrt[2 + S
qrt[2]]*ArcTan[(Sqrt[2 - Sqrt[2]] + (2*(1 - a*x)^(1/8))/(1 + a*x)^(1/8))/Sqrt[2 + Sqrt[2]]])/(32*a^2) - (Sqrt[
2 - Sqrt[2]]*ArcTan[(Sqrt[2 + Sqrt[2]] + (2*(1 - a*x)^(1/8))/(1 + a*x)^(1/8))/Sqrt[2 - Sqrt[2]]])/(32*a^2) - (
Sqrt[2 - Sqrt[2]]*Log[1 + (1 - a*x)^(1/4)/(1 + a*x)^(1/4) - (Sqrt[2 - Sqrt[2]]*(1 - a*x)^(1/8))/(1 + a*x)^(1/8
)])/(64*a^2) + (Sqrt[2 - Sqrt[2]]*Log[1 + (1 - a*x)^(1/4)/(1 + a*x)^(1/4) + (Sqrt[2 - Sqrt[2]]*(1 - a*x)^(1/8)
)/(1 + a*x)^(1/8)])/(64*a^2) - (Sqrt[2 + Sqrt[2]]*Log[1 + (1 - a*x)^(1/4)/(1 + a*x)^(1/4) - (Sqrt[2 + Sqrt[2]]
*(1 - a*x)^(1/8))/(1 + a*x)^(1/8)])/(64*a^2) + (Sqrt[2 + Sqrt[2]]*Log[1 + (1 - a*x)^(1/4)/(1 + a*x)^(1/4) + (S
qrt[2 + Sqrt[2]]*(1 - a*x)^(1/8))/(1 + a*x)^(1/8)])/(64*a^2)

Rule 6126

Int[E^(ArcTanh[(a_.)*(x_)]*(n_))*(x_)^(m_.), x_Symbol] :> Int[(x^m*(1 + a*x)^(n/2))/(1 - a*x)^(n/2), x] /; Fre
eQ[{a, m, n}, x] &&  !IntegerQ[(n - 1)/2]

Rule 80

Int[((a_.) + (b_.)*(x_))*((c_.) + (d_.)*(x_))^(n_.)*((e_.) + (f_.)*(x_))^(p_.), x_Symbol] :> Simp[(b*(c + d*x)
^(n + 1)*(e + f*x)^(p + 1))/(d*f*(n + p + 2)), x] + Dist[(a*d*f*(n + p + 2) - b*(d*e*(n + 1) + c*f*(p + 1)))/(
d*f*(n + p + 2)), Int[(c + d*x)^n*(e + f*x)^p, x], x] /; FreeQ[{a, b, c, d, e, f, n, p}, x] && NeQ[n + p + 2,
0]

Rule 50

Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[((a + b*x)^(m + 1)*(c + d*x)^n)/(b*
(m + n + 1)), x] + Dist[(n*(b*c - a*d))/(b*(m + n + 1)), Int[(a + b*x)^m*(c + d*x)^(n - 1), x], x] /; FreeQ[{a
, b, c, d}, x] && NeQ[b*c - a*d, 0] && GtQ[n, 0] && NeQ[m + n + 1, 0] &&  !(IGtQ[m, 0] && ( !IntegerQ[n] || (G
tQ[m, 0] && LtQ[m - n, 0]))) &&  !ILtQ[m + n + 2, 0] && IntLinearQ[a, b, c, d, m, n, x]

Rule 63

Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> With[{p = Denominator[m]}, Dist[p/b, Sub
st[Int[x^(p*(m + 1) - 1)*(c - (a*d)/b + (d*x^p)/b)^n, x], x, (a + b*x)^(1/p)], x]] /; FreeQ[{a, b, c, d}, x] &
& NeQ[b*c - a*d, 0] && LtQ[-1, m, 0] && LeQ[-1, n, 0] && LeQ[Denominator[n], Denominator[m]] && IntLinearQ[a,
b, c, d, m, n, x]

Rule 331

Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Dist[a^(p + (m + 1)/n), Subst[Int[x^m/(1 - b*x^n)^(
p + (m + 1)/n + 1), x], x, x/(a + b*x^n)^(1/n)], x] /; FreeQ[{a, b}, x] && IGtQ[n, 0] && LtQ[-1, p, 0] && NeQ[
p, -2^(-1)] && IntegersQ[m, p + (m + 1)/n]

Rule 299

Int[(x_)^(m_.)/((a_) + (b_.)*(x_)^(n_)), x_Symbol] :> With[{r = Numerator[Rt[a/b, 4]], s = Denominator[Rt[a/b,
4]]}, Dist[s^3/(2*Sqrt[2]*b*r), Int[x^(m - n/4)/(r^2 - Sqrt[2]*r*s*x^(n/4) + s^2*x^(n/2)), x], x] - Dist[s^3/
(2*Sqrt[2]*b*r), Int[x^(m - n/4)/(r^2 + Sqrt[2]*r*s*x^(n/4) + s^2*x^(n/2)), x], x]] /; FreeQ[{a, b}, x] && IGt
Q[n/4, 0] && IGtQ[m, 0] && LtQ[m, n - 1] && GtQ[a/b, 0]

Rule 1122

Int[((d_.)*(x_))^(m_.)*((a_) + (b_.)*(x_)^2 + (c_.)*(x_)^4)^(p_), x_Symbol] :> Simp[(d^3*(d*x)^(m - 3)*(a + b*
x^2 + c*x^4)^(p + 1))/(c*(m + 4*p + 1)), x] - Dist[d^4/(c*(m + 4*p + 1)), Int[(d*x)^(m - 4)*Simp[a*(m - 3) + b
*(m + 2*p - 1)*x^2, x]*(a + b*x^2 + c*x^4)^p, x], x] /; FreeQ[{a, b, c, d, p}, x] && NeQ[b^2 - 4*a*c, 0] && Gt
Q[m, 3] && NeQ[m + 4*p + 1, 0] && IntegerQ[2*p] && (IntegerQ[p] || IntegerQ[m])

Rule 1169

Int[((d_) + (e_.)*(x_)^2)/((a_) + (b_.)*(x_)^2 + (c_.)*(x_)^4), x_Symbol] :> With[{q = Rt[a/c, 2]}, With[{r =
Rt[2*q - b/c, 2]}, Dist[1/(2*c*q*r), Int[(d*r - (d - e*q)*x)/(q - r*x + x^2), x], x] + Dist[1/(2*c*q*r), Int[(
d*r + (d - e*q)*x)/(q + r*x + x^2), x], x]]] /; FreeQ[{a, b, c, d, e}, x] && NeQ[b^2 - 4*a*c, 0] && NeQ[c*d^2
- b*d*e + a*e^2, 0] && NegQ[b^2 - 4*a*c]

Rule 634

Int[((d_.) + (e_.)*(x_))/((a_) + (b_.)*(x_) + (c_.)*(x_)^2), x_Symbol] :> Dist[(2*c*d - b*e)/(2*c), Int[1/(a +
b*x + c*x^2), x], x] + Dist[e/(2*c), Int[(b + 2*c*x)/(a + b*x + c*x^2), x], x] /; FreeQ[{a, b, c, d, e}, x] &
& NeQ[2*c*d - b*e, 0] && NeQ[b^2 - 4*a*c, 0] &&  !NiceSqrtQ[b^2 - 4*a*c]

Rule 618

Int[((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(-1), x_Symbol] :> Dist[-2, Subst[Int[1/Simp[b^2 - 4*a*c - x^2, x], x]
, x, b + 2*c*x], x] /; FreeQ[{a, b, c}, x] && NeQ[b^2 - 4*a*c, 0]

Rule 204

Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> -Simp[ArcTan[(Rt[-b, 2]*x)/Rt[-a, 2]]/(Rt[-a, 2]*Rt[-b, 2]), x] /
; FreeQ[{a, b}, x] && PosQ[a/b] && (LtQ[a, 0] || LtQ[b, 0])

Rule 628

Int[((d_) + (e_.)*(x_))/((a_.) + (b_.)*(x_) + (c_.)*(x_)^2), x_Symbol] :> Simp[(d*Log[RemoveContent[a + b*x +
c*x^2, x]])/b, x] /; FreeQ[{a, b, c, d, e}, x] && EqQ[2*c*d - b*e, 0]

Rubi steps

\begin{align*} \int e^{\frac{1}{4} \tanh ^{-1}(a x)} x \, dx &=\int \frac{x \sqrt [8]{1+a x}}{\sqrt [8]{1-a x}} \, dx\\ &=-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}+\frac{\int \frac{\sqrt [8]{1+a x}}{\sqrt [8]{1-a x}} \, dx}{8 a}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}+\frac{\int \frac{1}{\sqrt [8]{1-a x} (1+a x)^{7/8}} \, dx}{32 a}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}-\frac{\operatorname{Subst}\left (\int \frac{x^6}{\left (2-x^8\right )^{7/8}} \, dx,x,\sqrt [8]{1-a x}\right )}{4 a^2}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}-\frac{\operatorname{Subst}\left (\int \frac{x^6}{1+x^8} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{4 a^2}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}-\frac{\operatorname{Subst}\left (\int \frac{x^4}{1-\sqrt{2} x^2+x^4} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{8 \sqrt{2} a^2}+\frac{\operatorname{Subst}\left (\int \frac{x^4}{1+\sqrt{2} x^2+x^4} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{8 \sqrt{2} a^2}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}+\frac{\operatorname{Subst}\left (\int \frac{1-\sqrt{2} x^2}{1-\sqrt{2} x^2+x^4} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{8 \sqrt{2} a^2}-\frac{\operatorname{Subst}\left (\int \frac{1+\sqrt{2} x^2}{1+\sqrt{2} x^2+x^4} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{8 \sqrt{2} a^2}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}-\frac{\operatorname{Subst}\left (\int \frac{\sqrt{2-\sqrt{2}}-\left (1-\sqrt{2}\right ) x}{1-\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{16 \sqrt{2 \left (2-\sqrt{2}\right )} a^2}-\frac{\operatorname{Subst}\left (\int \frac{\sqrt{2-\sqrt{2}}+\left (1-\sqrt{2}\right ) x}{1+\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{16 \sqrt{2 \left (2-\sqrt{2}\right )} a^2}+\frac{\operatorname{Subst}\left (\int \frac{\sqrt{2+\sqrt{2}}-\left (1+\sqrt{2}\right ) x}{1-\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{16 \sqrt{2 \left (2+\sqrt{2}\right )} a^2}+\frac{\operatorname{Subst}\left (\int \frac{\sqrt{2+\sqrt{2}}+\left (1+\sqrt{2}\right ) x}{1+\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{16 \sqrt{2 \left (2+\sqrt{2}\right )} a^2}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}-\frac{\sqrt{\frac{1}{2} \left (3-2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{1-\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{32 a^2}-\frac{\sqrt{\frac{1}{2} \left (3-2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{1+\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{32 a^2}-\frac{\sqrt{2-\sqrt{2}} \operatorname{Subst}\left (\int \frac{-\sqrt{2-\sqrt{2}}+2 x}{1-\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}+\frac{\sqrt{2-\sqrt{2}} \operatorname{Subst}\left (\int \frac{\sqrt{2-\sqrt{2}}+2 x}{1+\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \operatorname{Subst}\left (\int \frac{-\sqrt{2+\sqrt{2}}+2 x}{1-\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \operatorname{Subst}\left (\int \frac{\sqrt{2+\sqrt{2}}+2 x}{1+\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}-\frac{\sqrt{\frac{1}{2} \left (3+2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{1-\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{32 a^2}-\frac{\sqrt{\frac{1}{2} \left (3+2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{1+\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{32 a^2}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}-\frac{\sqrt{2-\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}-\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}+\frac{\sqrt{2-\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}+\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}-\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}+\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}+\frac{\sqrt{\frac{1}{2} \left (3-2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{-2+\sqrt{2}-x^2} \, dx,x,-\sqrt{2+\sqrt{2}}+\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{16 a^2}+\frac{\sqrt{\frac{1}{2} \left (3-2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{-2+\sqrt{2}-x^2} \, dx,x,\sqrt{2+\sqrt{2}}+\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{16 a^2}+\frac{\sqrt{\frac{1}{2} \left (3+2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{-2-\sqrt{2}-x^2} \, dx,x,-\sqrt{2-\sqrt{2}}+\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{16 a^2}+\frac{\sqrt{\frac{1}{2} \left (3+2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{-2-\sqrt{2}-x^2} \, dx,x,\sqrt{2-\sqrt{2}}+\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{16 a^2}\\ &=-\frac{(1-a x)^{7/8} \sqrt [8]{1+a x}}{8 a^2}-\frac{(1-a x)^{7/8} (1+a x)^{9/8}}{2 a^2}+\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}-\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}-\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}+\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}+\frac{2 \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2-\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}-\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}+\frac{\sqrt{2-\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}+\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}-\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}+\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-a x}}{\sqrt [8]{1+a x}}\right )}{64 a^2}\\ \end{align*}

Mathematica [C]  time = 0.0213972, size = 56, normalized size = 0.09 \[ -\frac{(1-a x)^{7/8} \left (2 \sqrt [8]{2} \text{Hypergeometric2F1}\left (-\frac{1}{8},\frac{7}{8},\frac{15}{8},\frac{1}{2} (1-a x)\right )+7 (a x+1)^{9/8}\right )}{14 a^2} \]

Warning: Unable to verify antiderivative.

[In]

Integrate[E^(ArcTanh[a*x]/4)*x,x]

[Out]

-((1 - a*x)^(7/8)*(7*(1 + a*x)^(9/8) + 2*2^(1/8)*Hypergeometric2F1[-1/8, 7/8, 15/8, (1 - a*x)/2]))/(14*a^2)

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Maple [F]  time = 0.035, size = 0, normalized size = 0. \begin{align*} \int \sqrt [4]{{(ax+1){\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}}}x\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(((a*x+1)/(-a^2*x^2+1)^(1/2))^(1/4)*x,x)

[Out]

int(((a*x+1)/(-a^2*x^2+1)^(1/2))^(1/4)*x,x)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int x \left (\frac{a x + 1}{\sqrt{-a^{2} x^{2} + 1}}\right )^{\frac{1}{4}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(((a*x+1)/(-a^2*x^2+1)^(1/2))^(1/4)*x,x, algorithm="maxima")

[Out]

integrate(x*((a*x + 1)/sqrt(-a^2*x^2 + 1))^(1/4), x)

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Fricas [B]  time = 2.28637, size = 6819, normalized size = 11.02 \begin{align*} \text{result too large to display} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(((a*x+1)/(-a^2*x^2+1)^(1/2))^(1/4)*x,x, algorithm="fricas")

[Out]

-1/256*(8*a^2*sqrt(sqrt(2) + 2)*(a^(-16))^(1/8)*arctan((2*sqrt(a^4*(a^(-16))^(1/4) + a^2*sqrt(-sqrt(2) + 2)*(-
sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1)))*a^14*(a^(-16))^(7/8
) - 2*a^14*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(7/8) - sqrt(-sqrt(2) + 2))/sqrt(sqrt(2) + 2)) + 8*
a^2*sqrt(sqrt(2) + 2)*(a^(-16))^(1/8)*arctan((2*sqrt(a^4*(a^(-16))^(1/4) - a^2*sqrt(-sqrt(2) + 2)*(-sqrt(-a^2*
x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1)))*a^14*(a^(-16))^(7/8) - 2*a^14
*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(7/8) + sqrt(-sqrt(2) + 2))/sqrt(sqrt(2) + 2)) + 8*a^2*sqrt(-
sqrt(2) + 2)*(a^(-16))^(1/8)*arctan((2*sqrt(a^4*(a^(-16))^(1/4) + a^2*sqrt(sqrt(2) + 2)*(-sqrt(-a^2*x^2 + 1)/(
a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1)))*a^14*(a^(-16))^(7/8) - 2*a^14*(-sqrt(-a
^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(7/8) - sqrt(sqrt(2) + 2))/sqrt(-sqrt(2) + 2)) + 8*a^2*sqrt(-sqrt(2) +
2)*(a^(-16))^(1/8)*arctan((2*sqrt(a^4*(a^(-16))^(1/4) - a^2*sqrt(sqrt(2) + 2)*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^
(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1)))*a^14*(a^(-16))^(7/8) - 2*a^14*(-sqrt(-a^2*x^2 + 1
)/(a*x - 1))^(1/4)*(a^(-16))^(7/8) + sqrt(sqrt(2) + 2))/sqrt(-sqrt(2) + 2)) - 2*a^2*sqrt(sqrt(2) + 2)*(a^(-16)
)^(1/8)*log(a^4*(a^(-16))^(1/4) + a^2*sqrt(sqrt(2) + 2)*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8)
+ sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1))) + 2*a^2*sqrt(sqrt(2) + 2)*(a^(-16))^(1/8)*log(a^4*(a^(-16))^(1/4) - a^2
*sqrt(sqrt(2) + 2)*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1))
) - 2*a^2*sqrt(-sqrt(2) + 2)*(a^(-16))^(1/8)*log(a^4*(a^(-16))^(1/4) + a^2*sqrt(-sqrt(2) + 2)*(-sqrt(-a^2*x^2
+ 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1))) + 2*a^2*sqrt(-sqrt(2) + 2)*(a^(-1
6))^(1/8)*log(a^4*(a^(-16))^(1/4) - a^2*sqrt(-sqrt(2) + 2)*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/
8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1))) + 4*(sqrt(2)*a^2*sqrt(sqrt(2) + 2) + sqrt(2)*a^2*sqrt(-sqrt(2) + 2))
*(a^(-16))^(1/8)*arctan((2*sqrt(2)*sqrt(a^4*(a^(-16))^(1/4) + 1/2*(sqrt(2)*a^2*sqrt(sqrt(2) + 2) - sqrt(2)*a^2
*sqrt(-sqrt(2) + 2))*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1
)))*a^14*(a^(-16))^(7/8) - 2*sqrt(2)*a^14*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(7/8) - sqrt(sqrt(2)
+ 2) + sqrt(-sqrt(2) + 2))/(sqrt(sqrt(2) + 2) + sqrt(-sqrt(2) + 2))) + 4*(sqrt(2)*a^2*sqrt(sqrt(2) + 2) + sqr
t(2)*a^2*sqrt(-sqrt(2) + 2))*(a^(-16))^(1/8)*arctan((2*sqrt(2)*sqrt(a^4*(a^(-16))^(1/4) - 1/2*(sqrt(2)*a^2*sqr
t(sqrt(2) + 2) - sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(
-sqrt(-a^2*x^2 + 1)/(a*x - 1)))*a^14*(a^(-16))^(7/8) - 2*sqrt(2)*a^14*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a
^(-16))^(7/8) + sqrt(sqrt(2) + 2) - sqrt(-sqrt(2) + 2))/(sqrt(sqrt(2) + 2) + sqrt(-sqrt(2) + 2))) - 4*(sqrt(2)
*a^2*sqrt(sqrt(2) + 2) - sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(a^(-16))^(1/8)*arctan(-(2*sqrt(2)*sqrt(a^4*(a^(-16))
^(1/4) + 1/2*(sqrt(2)*a^2*sqrt(sqrt(2) + 2) + sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^
(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1)))*a^14*(a^(-16))^(7/8) - 2*sqrt(2)*a^14*(-sqrt(-a^2
*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(7/8) - sqrt(sqrt(2) + 2) - sqrt(-sqrt(2) + 2))/(sqrt(sqrt(2) + 2) - sqrt
(-sqrt(2) + 2))) - 4*(sqrt(2)*a^2*sqrt(sqrt(2) + 2) - sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(a^(-16))^(1/8)*arctan(-
(2*sqrt(2)*sqrt(a^4*(a^(-16))^(1/4) - 1/2*(sqrt(2)*a^2*sqrt(sqrt(2) + 2) + sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(-s
qrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1)))*a^14*(a^(-16))^(7/8)
- 2*sqrt(2)*a^14*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(7/8) + sqrt(sqrt(2) + 2) + sqrt(-sqrt(2) +
2))/(sqrt(sqrt(2) + 2) - sqrt(-sqrt(2) + 2))) - (sqrt(2)*a^2*sqrt(sqrt(2) + 2) + sqrt(2)*a^2*sqrt(-sqrt(2) + 2
))*(a^(-16))^(1/8)*log(a^4*(a^(-16))^(1/4) + 1/2*(sqrt(2)*a^2*sqrt(sqrt(2) + 2) + sqrt(2)*a^2*sqrt(-sqrt(2) +
2))*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1))) + (sqrt(2)*a^
2*sqrt(sqrt(2) + 2) + sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(a^(-16))^(1/8)*log(a^4*(a^(-16))^(1/4) - 1/2*(sqrt(2)*a
^2*sqrt(sqrt(2) + 2) + sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) +
sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1))) - (sqrt(2)*a^2*sqrt(sqrt(2) + 2) - sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(a^(-
16))^(1/8)*log(a^4*(a^(-16))^(1/4) + 1/2*(sqrt(2)*a^2*sqrt(sqrt(2) + 2) - sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(-sq
rt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-sqrt(-a^2*x^2 + 1)/(a*x - 1))) + (sqrt(2)*a^2*sqrt(s
qrt(2) + 2) - sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(a^(-16))^(1/8)*log(a^4*(a^(-16))^(1/4) - 1/2*(sqrt(2)*a^2*sqrt(
sqrt(2) + 2) - sqrt(2)*a^2*sqrt(-sqrt(2) + 2))*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4)*(a^(-16))^(1/8) + sqrt(-s
qrt(-a^2*x^2 + 1)/(a*x - 1))) - 32*(4*a^2*x^2 + a*x - 5)*(-sqrt(-a^2*x^2 + 1)/(a*x - 1))^(1/4))/a^2

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Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int x \sqrt [4]{\frac{a x + 1}{\sqrt{- a^{2} x^{2} + 1}}}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(((a*x+1)/(-a**2*x**2+1)**(1/2))**(1/4)*x,x)

[Out]

Integral(x*((a*x + 1)/sqrt(-a**2*x**2 + 1))**(1/4), x)

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int x \left (\frac{a x + 1}{\sqrt{-a^{2} x^{2} + 1}}\right )^{\frac{1}{4}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(((a*x+1)/(-a^2*x^2+1)^(1/2))^(1/4)*x,x, algorithm="giac")

[Out]

integrate(x*((a*x + 1)/sqrt(-a^2*x^2 + 1))^(1/4), x)