Optimal. Leaf size=49 \[ -\frac{1}{4 a c^2 (a x+1)}-\frac{1}{4 a c^2 (a x+1)^2}+\frac{\tanh ^{-1}(a x)}{4 a c^2} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.0501079, antiderivative size = 49, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 22, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.136, Rules used = {6140, 44, 207} \[ -\frac{1}{4 a c^2 (a x+1)}-\frac{1}{4 a c^2 (a x+1)^2}+\frac{\tanh ^{-1}(a x)}{4 a c^2} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 6140
Rule 44
Rule 207
Rubi steps
\begin{align*} \int \frac{e^{-2 \tanh ^{-1}(a x)}}{\left (c-a^2 c x^2\right )^2} \, dx &=\frac{\int \frac{1}{(1-a x) (1+a x)^3} \, dx}{c^2}\\ &=\frac{\int \left (\frac{1}{2 (1+a x)^3}+\frac{1}{4 (1+a x)^2}-\frac{1}{4 \left (-1+a^2 x^2\right )}\right ) \, dx}{c^2}\\ &=-\frac{1}{4 a c^2 (1+a x)^2}-\frac{1}{4 a c^2 (1+a x)}-\frac{\int \frac{1}{-1+a^2 x^2} \, dx}{4 c^2}\\ &=-\frac{1}{4 a c^2 (1+a x)^2}-\frac{1}{4 a c^2 (1+a x)}+\frac{\tanh ^{-1}(a x)}{4 a c^2}\\ \end{align*}
Mathematica [A] time = 0.0250277, size = 33, normalized size = 0.67 \[ \frac{-a x+(a x+1)^2 \tanh ^{-1}(a x)-2}{4 a (a c x+c)^2} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.034, size = 60, normalized size = 1.2 \begin{align*} -{\frac{1}{4\,a{c}^{2} \left ( ax+1 \right ) ^{2}}}-{\frac{1}{4\,a{c}^{2} \left ( ax+1 \right ) }}+{\frac{\ln \left ( ax+1 \right ) }{8\,a{c}^{2}}}-{\frac{\ln \left ( ax-1 \right ) }{8\,a{c}^{2}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [A] time = 0.961268, size = 85, normalized size = 1.73 \begin{align*} -\frac{a x + 2}{4 \,{\left (a^{3} c^{2} x^{2} + 2 \, a^{2} c^{2} x + a c^{2}\right )}} + \frac{\log \left (a x + 1\right )}{8 \, a c^{2}} - \frac{\log \left (a x - 1\right )}{8 \, a c^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A] time = 2.0748, size = 173, normalized size = 3.53 \begin{align*} -\frac{2 \, a x -{\left (a^{2} x^{2} + 2 \, a x + 1\right )} \log \left (a x + 1\right ) +{\left (a^{2} x^{2} + 2 \, a x + 1\right )} \log \left (a x - 1\right ) + 4}{8 \,{\left (a^{3} c^{2} x^{2} + 2 \, a^{2} c^{2} x + a c^{2}\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [A] time = 0.521674, size = 56, normalized size = 1.14 \begin{align*} - \frac{a x + 2}{4 a^{3} c^{2} x^{2} + 8 a^{2} c^{2} x + 4 a c^{2}} - \frac{\frac{\log{\left (x - \frac{1}{a} \right )}}{8} - \frac{\log{\left (x + \frac{1}{a} \right )}}{8}}{a c^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [A] time = 1.16565, size = 74, normalized size = 1.51 \begin{align*} -\frac{\log \left ({\left | -\frac{2}{a x + 1} + 1 \right |}\right )}{8 \, a c^{2}} - \frac{\frac{a c^{2}}{a x + 1} + \frac{a c^{2}}{{\left (a x + 1\right )}^{2}}}{4 \, a^{2} c^{4}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]