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

Optimal. Leaf size=125 \[ \frac{2 a^3 (a x+1)}{c \sqrt{1-a^2 x^2}}-\frac{8 a^2 \sqrt{1-a^2 x^2}}{3 c x}-\frac{a \sqrt{1-a^2 x^2}}{c x^2}-\frac{\sqrt{1-a^2 x^2}}{3 c x^3}-\frac{3 a^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )}{c} \]

[Out]

(2*a^3*(1 + a*x))/(c*Sqrt[1 - a^2*x^2]) - Sqrt[1 - a^2*x^2]/(3*c*x^3) - (a*Sqrt[1 - a^2*x^2])/(c*x^2) - (8*a^2
*Sqrt[1 - a^2*x^2])/(3*c*x) - (3*a^3*ArcTanh[Sqrt[1 - a^2*x^2]])/c

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Rubi [A]  time = 0.329187, antiderivative size = 125, normalized size of antiderivative = 1., number of steps used = 9, number of rules used = 8, integrand size = 19, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.421, Rules used = {6128, 852, 1805, 1807, 807, 266, 63, 208} \[ \frac{2 a^3 (a x+1)}{c \sqrt{1-a^2 x^2}}-\frac{8 a^2 \sqrt{1-a^2 x^2}}{3 c x}-\frac{a \sqrt{1-a^2 x^2}}{c x^2}-\frac{\sqrt{1-a^2 x^2}}{3 c x^3}-\frac{3 a^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )}{c} \]

Antiderivative was successfully verified.

[In]

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

[Out]

(2*a^3*(1 + a*x))/(c*Sqrt[1 - a^2*x^2]) - Sqrt[1 - a^2*x^2]/(3*c*x^3) - (a*Sqrt[1 - a^2*x^2])/(c*x^2) - (8*a^2
*Sqrt[1 - a^2*x^2])/(3*c*x) - (3*a^3*ArcTanh[Sqrt[1 - a^2*x^2]])/c

Rule 6128

Int[E^(ArcTanh[(a_.)*(x_)]*(n_.))*((c_) + (d_.)*(x_))^(p_.)*((e_.) + (f_.)*(x_))^(m_.), x_Symbol] :> Dist[c^n,
Int[(e + f*x)^m*(c + d*x)^(p - n)*(1 - a^2*x^2)^(n/2), x], x] /; FreeQ[{a, c, d, e, f, m, p}, x] && EqQ[a*c +
d, 0] && IntegerQ[(n - 1)/2] && (IntegerQ[p] || EqQ[p, n/2] || EqQ[p - n/2 - 1, 0]) && IntegerQ[2*p]

Rule 852

Int[((d_) + (e_.)*(x_))^(m_)*((f_.) + (g_.)*(x_))^(n_)*((a_) + (c_.)*(x_)^2)^(p_), x_Symbol] :> Dist[d^(2*m)/a
^m, Int[((f + g*x)^n*(a + c*x^2)^(m + p))/(d - e*x)^m, x], x] /; FreeQ[{a, c, d, e, f, g, n, p}, x] && NeQ[e*f
- d*g, 0] && EqQ[c*d^2 + a*e^2, 0] &&  !IntegerQ[p] && EqQ[f, 0] && ILtQ[m, -1] &&  !(IGtQ[n, 0] && ILtQ[m +
n, 0] &&  !GtQ[p, 1])

Rule 1805

Int[(Pq_)*((c_.)*(x_))^(m_.)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> With[{Q = PolynomialQuotient[(c*x)^m*Pq,
a + b*x^2, x], f = Coeff[PolynomialRemainder[(c*x)^m*Pq, a + b*x^2, x], x, 0], g = Coeff[PolynomialRemainder[
(c*x)^m*Pq, a + b*x^2, x], x, 1]}, Simp[((a*g - b*f*x)*(a + b*x^2)^(p + 1))/(2*a*b*(p + 1)), x] + Dist[1/(2*a*
(p + 1)), Int[(c*x)^m*(a + b*x^2)^(p + 1)*ExpandToSum[(2*a*(p + 1)*Q)/(c*x)^m + (f*(2*p + 3))/(c*x)^m, x], x],
x]] /; FreeQ[{a, b, c}, x] && PolyQ[Pq, x] && LtQ[p, -1] && ILtQ[m, 0]

Rule 1807

Int[(Pq_)*((c_.)*(x_))^(m_)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> With[{Q = PolynomialQuotient[Pq, c*x, x],
R = PolynomialRemainder[Pq, c*x, x]}, Simp[(R*(c*x)^(m + 1)*(a + b*x^2)^(p + 1))/(a*c*(m + 1)), x] + Dist[1/(
a*c*(m + 1)), Int[(c*x)^(m + 1)*(a + b*x^2)^p*ExpandToSum[a*c*(m + 1)*Q - b*R*(m + 2*p + 3)*x, x], x], x]] /;
FreeQ[{a, b, c, p}, x] && PolyQ[Pq, x] && LtQ[m, -1] && (IntegerQ[2*p] || NeQ[Expon[Pq, x], 1])

Rule 807

Int[((d_.) + (e_.)*(x_))^(m_)*((f_.) + (g_.)*(x_))*((a_) + (c_.)*(x_)^2)^(p_.), x_Symbol] :> -Simp[((e*f - d*g
)*(d + e*x)^(m + 1)*(a + c*x^2)^(p + 1))/(2*(p + 1)*(c*d^2 + a*e^2)), x] + Dist[(c*d*f + a*e*g)/(c*d^2 + a*e^2
), Int[(d + e*x)^(m + 1)*(a + c*x^2)^p, x], x] /; FreeQ[{a, c, d, e, f, g, m, p}, x] && NeQ[c*d^2 + a*e^2, 0]
&& EqQ[Simplify[m + 2*p + 3], 0]

Rule 266

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

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 208

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

Rubi steps

\begin{align*} \int \frac{e^{\tanh ^{-1}(a x)}}{x^4 (c-a c x)} \, dx &=c \int \frac{\sqrt{1-a^2 x^2}}{x^4 (c-a c x)^2} \, dx\\ &=\frac{\int \frac{(c+a c x)^2}{x^4 \left (1-a^2 x^2\right )^{3/2}} \, dx}{c^3}\\ &=\frac{2 a^3 (1+a x)}{c \sqrt{1-a^2 x^2}}-\frac{\int \frac{-c^2-2 a c^2 x-2 a^2 c^2 x^2-2 a^3 c^2 x^3}{x^4 \sqrt{1-a^2 x^2}} \, dx}{c^3}\\ &=\frac{2 a^3 (1+a x)}{c \sqrt{1-a^2 x^2}}-\frac{\sqrt{1-a^2 x^2}}{3 c x^3}+\frac{\int \frac{6 a c^2+8 a^2 c^2 x+6 a^3 c^2 x^2}{x^3 \sqrt{1-a^2 x^2}} \, dx}{3 c^3}\\ &=\frac{2 a^3 (1+a x)}{c \sqrt{1-a^2 x^2}}-\frac{\sqrt{1-a^2 x^2}}{3 c x^3}-\frac{a \sqrt{1-a^2 x^2}}{c x^2}-\frac{\int \frac{-16 a^2 c^2-18 a^3 c^2 x}{x^2 \sqrt{1-a^2 x^2}} \, dx}{6 c^3}\\ &=\frac{2 a^3 (1+a x)}{c \sqrt{1-a^2 x^2}}-\frac{\sqrt{1-a^2 x^2}}{3 c x^3}-\frac{a \sqrt{1-a^2 x^2}}{c x^2}-\frac{8 a^2 \sqrt{1-a^2 x^2}}{3 c x}+\frac{\left (3 a^3\right ) \int \frac{1}{x \sqrt{1-a^2 x^2}} \, dx}{c}\\ &=\frac{2 a^3 (1+a x)}{c \sqrt{1-a^2 x^2}}-\frac{\sqrt{1-a^2 x^2}}{3 c x^3}-\frac{a \sqrt{1-a^2 x^2}}{c x^2}-\frac{8 a^2 \sqrt{1-a^2 x^2}}{3 c x}+\frac{\left (3 a^3\right ) \operatorname{Subst}\left (\int \frac{1}{x \sqrt{1-a^2 x}} \, dx,x,x^2\right )}{2 c}\\ &=\frac{2 a^3 (1+a x)}{c \sqrt{1-a^2 x^2}}-\frac{\sqrt{1-a^2 x^2}}{3 c x^3}-\frac{a \sqrt{1-a^2 x^2}}{c x^2}-\frac{8 a^2 \sqrt{1-a^2 x^2}}{3 c x}-\frac{(3 a) \operatorname{Subst}\left (\int \frac{1}{\frac{1}{a^2}-\frac{x^2}{a^2}} \, dx,x,\sqrt{1-a^2 x^2}\right )}{c}\\ &=\frac{2 a^3 (1+a x)}{c \sqrt{1-a^2 x^2}}-\frac{\sqrt{1-a^2 x^2}}{3 c x^3}-\frac{a \sqrt{1-a^2 x^2}}{c x^2}-\frac{8 a^2 \sqrt{1-a^2 x^2}}{3 c x}-\frac{3 a^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )}{c}\\ \end{align*}

Mathematica [A]  time = 0.0410326, size = 91, normalized size = 0.73 \[ -\frac{-14 a^4 x^4-9 a^3 x^3+7 a^2 x^2+9 a^3 x^3 \sqrt{1-a^2 x^2} \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )+3 a x+1}{3 c x^3 \sqrt{1-a^2 x^2}} \]

Antiderivative was successfully verified.

[In]

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

[Out]

-(1 + 3*a*x + 7*a^2*x^2 - 9*a^3*x^3 - 14*a^4*x^4 + 9*a^3*x^3*Sqrt[1 - a^2*x^2]*ArcTanh[Sqrt[1 - a^2*x^2]])/(3*
c*x^3*Sqrt[1 - a^2*x^2])

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Maple [A]  time = 0.046, size = 142, normalized size = 1.1 \begin{align*} -{\frac{1}{c} \left ({\frac{8\,{a}^{2}}{3\,x}\sqrt{-{a}^{2}{x}^{2}+1}}+2\,{a}^{3}{\it Artanh} \left ({\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}} \right ) +2\,{{a}^{2}\sqrt{-{a}^{2} \left ( x-{a}^{-1} \right ) ^{2}-2\,a \left ( x-{a}^{-1} \right ) } \left ( x-{a}^{-1} \right ) ^{-1}}-2\,a \left ( -1/2\,{\frac{\sqrt{-{a}^{2}{x}^{2}+1}}{{x}^{2}}}-1/2\,{a}^{2}{\it Artanh} \left ({\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}} \right ) \right ) +{\frac{1}{3\,{x}^{3}}\sqrt{-{a}^{2}{x}^{2}+1}} \right ) } \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-1/c*(8/3*a^2*(-a^2*x^2+1)^(1/2)/x+2*a^3*arctanh(1/(-a^2*x^2+1)^(1/2))+2*a^2/(x-1/a)*(-a^2*(x-1/a)^2-2*a*(x-1/
a))^(1/2)-2*a*(-1/2*(-a^2*x^2+1)^(1/2)/x^2-1/2*a^2*arctanh(1/(-a^2*x^2+1)^(1/2)))+1/3*(-a^2*x^2+1)^(1/2)/x^3)

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

[Out]

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

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Fricas [A]  time = 1.57952, size = 217, normalized size = 1.74 \begin{align*} \frac{6 \, a^{4} x^{4} - 6 \, a^{3} x^{3} + 9 \,{\left (a^{4} x^{4} - a^{3} x^{3}\right )} \log \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{x}\right ) -{\left (14 \, a^{3} x^{3} - 5 \, a^{2} x^{2} - 2 \, a x - 1\right )} \sqrt{-a^{2} x^{2} + 1}}{3 \,{\left (a c x^{4} - c x^{3}\right )}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

1/3*(6*a^4*x^4 - 6*a^3*x^3 + 9*(a^4*x^4 - a^3*x^3)*log((sqrt(-a^2*x^2 + 1) - 1)/x) - (14*a^3*x^3 - 5*a^2*x^2 -
2*a*x - 1)*sqrt(-a^2*x^2 + 1))/(a*c*x^4 - c*x^3)

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Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} - \frac{\int \frac{a x}{a x^{5} \sqrt{- a^{2} x^{2} + 1} - x^{4} \sqrt{- a^{2} x^{2} + 1}}\, dx + \int \frac{1}{a x^{5} \sqrt{- a^{2} x^{2} + 1} - x^{4} \sqrt{- a^{2} x^{2} + 1}}\, dx}{c} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-(Integral(a*x/(a*x**5*sqrt(-a**2*x**2 + 1) - x**4*sqrt(-a**2*x**2 + 1)), x) + Integral(1/(a*x**5*sqrt(-a**2*x
**2 + 1) - x**4*sqrt(-a**2*x**2 + 1)), x))/c

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Giac [B]  time = 1.26543, size = 382, normalized size = 3.06 \begin{align*} -\frac{{\left (a^{4} + \frac{5 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )} a^{2}}{x} + \frac{27 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{2}}{x^{2}} - \frac{129 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{3}}{a^{2} x^{3}}\right )} a^{6} x^{3}}{24 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{3} c{\left (\frac{\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a}{a^{2} x} - 1\right )}{\left | a \right |}} - \frac{3 \, a^{4} \log \left (\frac{{\left | -2 \, \sqrt{-a^{2} x^{2} + 1}{\left | a \right |} - 2 \, a \right |}}{2 \, a^{2}{\left | x \right |}}\right )}{c{\left | a \right |}} - \frac{\frac{33 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )} a^{4} c^{2}}{x} + \frac{6 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{2} a^{2} c^{2}}{x^{2}} + \frac{{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}^{3} c^{2}}{x^{3}}}{24 \, a^{2} c^{3}{\left | a \right |}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-1/24*(a^4 + 5*(sqrt(-a^2*x^2 + 1)*abs(a) + a)*a^2/x + 27*(sqrt(-a^2*x^2 + 1)*abs(a) + a)^2/x^2 - 129*(sqrt(-a
^2*x^2 + 1)*abs(a) + a)^3/(a^2*x^3))*a^6*x^3/((sqrt(-a^2*x^2 + 1)*abs(a) + a)^3*c*((sqrt(-a^2*x^2 + 1)*abs(a)
+ a)/(a^2*x) - 1)*abs(a)) - 3*a^4*log(1/2*abs(-2*sqrt(-a^2*x^2 + 1)*abs(a) - 2*a)/(a^2*abs(x)))/(c*abs(a)) - 1
/24*(33*(sqrt(-a^2*x^2 + 1)*abs(a) + a)*a^4*c^2/x + 6*(sqrt(-a^2*x^2 + 1)*abs(a) + a)^2*a^2*c^2/x^2 + (sqrt(-a
^2*x^2 + 1)*abs(a) + a)^3*c^2/x^3)/(a^2*c^3*abs(a))