3.549 \(\int \frac{e^{-2 \tanh ^{-1}(a x)}}{\sqrt{c-\frac{c}{a x}}} \, dx\)

Optimal. Leaf size=96 \[ -\frac{x \sqrt{c-\frac{c}{a x}}}{c}+\frac{3 \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{c}}\right )}{a \sqrt{c}}-\frac{2 \sqrt{2} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{2} \sqrt{c}}\right )}{a \sqrt{c}} \]

[Out]

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

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Rubi [A]  time = 0.161138, antiderivative size = 96, normalized size of antiderivative = 1., number of steps used = 10, number of rules used = 8, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.333, Rules used = {6133, 25, 514, 375, 99, 156, 63, 208} \[ -\frac{x \sqrt{c-\frac{c}{a x}}}{c}+\frac{3 \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{c}}\right )}{a \sqrt{c}}-\frac{2 \sqrt{2} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{2} \sqrt{c}}\right )}{a \sqrt{c}} \]

Antiderivative was successfully verified.

[In]

Int[1/(E^(2*ArcTanh[a*x])*Sqrt[c - c/(a*x)]),x]

[Out]

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

Rule 6133

Int[E^(ArcTanh[(a_.)*(x_)]*(n_))*(u_.)*((c_) + (d_.)/(x_))^(p_), x_Symbol] :> Int[(u*(c + d/x)^p*(1 + a*x)^(n/
2))/(1 - a*x)^(n/2), x] /; FreeQ[{a, c, d, p}, x] && EqQ[c^2 - a^2*d^2, 0] &&  !IntegerQ[p] && IntegerQ[n/2] &
&  !GtQ[c, 0]

Rule 25

Int[(u_.)*((a_) + (b_.)*(x_)^(n_.))^(m_.)*((c_) + (d_.)*(x_)^(q_.))^(p_.), x_Symbol] :> Dist[(d/a)^p, Int[(u*(
a + b*x^n)^(m + p))/x^(n*p), x], x] /; FreeQ[{a, b, c, d, m, n}, x] && EqQ[q, -n] && IntegerQ[p] && EqQ[a*c -
b*d, 0] &&  !(IntegerQ[m] && NegQ[n])

Rule 514

Int[(x_)^(m_.)*((c_) + (d_.)*(x_)^(mn_.))^(q_.)*((a_) + (b_.)*(x_)^(n_.))^(p_.), x_Symbol] :> Int[x^(m - n*q)*
(a + b*x^n)^p*(d + c*x^n)^q, x] /; FreeQ[{a, b, c, d, m, n, p}, x] && EqQ[mn, -n] && IntegerQ[q] && (PosQ[n] |
|  !IntegerQ[p])

Rule 375

Int[((a_) + (b_.)*(x_)^(n_))^(p_.)*((c_) + (d_.)*(x_)^(n_))^(q_.), x_Symbol] :> -Subst[Int[((a + b/x^n)^p*(c +
d/x^n)^q)/x^2, x], x, 1/x] /; FreeQ[{a, b, c, d, p, q}, x] && NeQ[b*c - a*d, 0] && ILtQ[n, 0]

Rule 99

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

Rule 156

Int[(((e_.) + (f_.)*(x_))^(p_)*((g_.) + (h_.)*(x_)))/(((a_.) + (b_.)*(x_))*((c_.) + (d_.)*(x_))), x_Symbol] :>
Dist[(b*g - a*h)/(b*c - a*d), Int[(e + f*x)^p/(a + b*x), x], x] - Dist[(d*g - c*h)/(b*c - a*d), Int[(e + f*x)
^p/(c + d*x), x], x] /; FreeQ[{a, b, c, d, e, f, g, h}, 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 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^{-2 \tanh ^{-1}(a x)}}{\sqrt{c-\frac{c}{a x}}} \, dx &=\int \frac{1-a x}{\sqrt{c-\frac{c}{a x}} (1+a x)} \, dx\\ &=-\frac{a \int \frac{\sqrt{c-\frac{c}{a x}} x}{1+a x} \, dx}{c}\\ &=-\frac{a \int \frac{\sqrt{c-\frac{c}{a x}}}{a+\frac{1}{x}} \, dx}{c}\\ &=\frac{a \operatorname{Subst}\left (\int \frac{\sqrt{c-\frac{c x}{a}}}{x^2 (a+x)} \, dx,x,\frac{1}{x}\right )}{c}\\ &=-\frac{\sqrt{c-\frac{c}{a x}} x}{c}+\frac{\operatorname{Subst}\left (\int \frac{-\frac{3 c}{2}+\frac{c x}{2 a}}{x (a+x) \sqrt{c-\frac{c x}{a}}} \, dx,x,\frac{1}{x}\right )}{c}\\ &=-\frac{\sqrt{c-\frac{c}{a x}} x}{c}-\frac{3 \operatorname{Subst}\left (\int \frac{1}{x \sqrt{c-\frac{c x}{a}}} \, dx,x,\frac{1}{x}\right )}{2 a}+\frac{2 \operatorname{Subst}\left (\int \frac{1}{(a+x) \sqrt{c-\frac{c x}{a}}} \, dx,x,\frac{1}{x}\right )}{a}\\ &=-\frac{\sqrt{c-\frac{c}{a x}} x}{c}+\frac{3 \operatorname{Subst}\left (\int \frac{1}{a-\frac{a x^2}{c}} \, dx,x,\sqrt{c-\frac{c}{a x}}\right )}{c}-\frac{4 \operatorname{Subst}\left (\int \frac{1}{2 a-\frac{a x^2}{c}} \, dx,x,\sqrt{c-\frac{c}{a x}}\right )}{c}\\ &=-\frac{\sqrt{c-\frac{c}{a x}} x}{c}+\frac{3 \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{c}}\right )}{a \sqrt{c}}-\frac{2 \sqrt{2} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{2} \sqrt{c}}\right )}{a \sqrt{c}}\\ \end{align*}

Mathematica [A]  time = 0.0474643, size = 96, normalized size = 1. \[ -\frac{x \sqrt{c-\frac{c}{a x}}}{c}+\frac{3 \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{c}}\right )}{a \sqrt{c}}-\frac{2 \sqrt{2} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{2} \sqrt{c}}\right )}{a \sqrt{c}} \]

Antiderivative was successfully verified.

[In]

Integrate[1/(E^(2*ArcTanh[a*x])*Sqrt[c - c/(a*x)]),x]

[Out]

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

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Maple [A]  time = 0.126, size = 136, normalized size = 1.4 \begin{align*} -{\frac{x}{2\,c}\sqrt{{\frac{c \left ( ax-1 \right ) }{ax}}} \left ( 2\,\sqrt{ \left ( ax-1 \right ) x}{a}^{3/2}\sqrt{{a}^{-1}}-3\,\ln \left ( 1/2\,{\frac{2\,\sqrt{ \left ( ax-1 \right ) x}\sqrt{a}+2\,ax-1}{\sqrt{a}}} \right ) a\sqrt{{a}^{-1}}-2\,\sqrt{2}\ln \left ({\frac{2\,\sqrt{2}\sqrt{{a}^{-1}}\sqrt{ \left ( ax-1 \right ) x}a-3\,ax+1}{ax+1}} \right ) \sqrt{a} \right ){\frac{1}{\sqrt{ \left ( ax-1 \right ) x}}}{a}^{-{\frac{3}{2}}}{\frac{1}{\sqrt{{a}^{-1}}}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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Fricas [A]  time = 1.78072, size = 535, normalized size = 5.57 \begin{align*} \left [-\frac{2 \, a x \sqrt{\frac{a c x - c}{a x}} - 2 \, \sqrt{2} \sqrt{c} \log \left (\frac{\frac{2 \, \sqrt{2} a x \sqrt{\frac{a c x - c}{a x}}}{\sqrt{c}} - 3 \, a x + 1}{a x + 1}\right ) - 3 \, \sqrt{c} \log \left (-2 \, a c x - 2 \, a \sqrt{c} x \sqrt{\frac{a c x - c}{a x}} + c\right )}{2 \, a c}, \frac{2 \, \sqrt{2} c \sqrt{-\frac{1}{c}} \arctan \left (\frac{\sqrt{2} a x \sqrt{-\frac{1}{c}} \sqrt{\frac{a c x - c}{a x}}}{a x - 1}\right ) - a x \sqrt{\frac{a c x - c}{a x}} - 3 \, \sqrt{-c} \arctan \left (\frac{\sqrt{-c} \sqrt{\frac{a c x - c}{a x}}}{c}\right )}{a c}\right ] \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

[-1/2*(2*a*x*sqrt((a*c*x - c)/(a*x)) - 2*sqrt(2)*sqrt(c)*log((2*sqrt(2)*a*x*sqrt((a*c*x - c)/(a*x))/sqrt(c) -
3*a*x + 1)/(a*x + 1)) - 3*sqrt(c)*log(-2*a*c*x - 2*a*sqrt(c)*x*sqrt((a*c*x - c)/(a*x)) + c))/(a*c), (2*sqrt(2)
*c*sqrt(-1/c)*arctan(sqrt(2)*a*x*sqrt(-1/c)*sqrt((a*c*x - c)/(a*x))/(a*x - 1)) - a*x*sqrt((a*c*x - c)/(a*x)) -
3*sqrt(-c)*arctan(sqrt(-c)*sqrt((a*c*x - c)/(a*x))/c))/(a*c)]

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

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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Giac [B]  time = 1.32843, size = 227, normalized size = 2.36 \begin{align*} a c{\left (\frac{2 \, \sqrt{2} \arctan \left (\frac{\sqrt{2} \sqrt{-\frac{c - \frac{2 \, c}{a x + 1}}{\frac{1}{a x + 1} - 1}}}{2 \, \sqrt{-c}}\right )}{a^{2} \sqrt{-c} c} - \frac{3 \, \arctan \left (\frac{\sqrt{-\frac{c - \frac{2 \, c}{a x + 1}}{\frac{1}{a x + 1} - 1}}}{\sqrt{-c}}\right )}{a^{2} \sqrt{-c} c} - \frac{\sqrt{-\frac{c - \frac{2 \, c}{a x + 1}}{\frac{1}{a x + 1} - 1}}}{a^{2}{\left (c + \frac{c - \frac{2 \, c}{a x + 1}}{\frac{1}{a x + 1} - 1}\right )} c}\right )} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

a*c*(2*sqrt(2)*arctan(1/2*sqrt(2)*sqrt(-(c - 2*c/(a*x + 1))/(1/(a*x + 1) - 1))/sqrt(-c))/(a^2*sqrt(-c)*c) - 3*
arctan(sqrt(-(c - 2*c/(a*x + 1))/(1/(a*x + 1) - 1))/sqrt(-c))/(a^2*sqrt(-c)*c) - sqrt(-(c - 2*c/(a*x + 1))/(1/
(a*x + 1) - 1))/(a^2*(c + (c - 2*c/(a*x + 1))/(1/(a*x + 1) - 1))*c))