Optimal. Leaf size=51 \[ -\frac {1}{4 a c^4 (1-a x)}-\frac {1}{4 a c^4 (1-a x)^2}-\frac {\tanh ^{-1}(a x)}{4 a c^4} \]
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Rubi [A] time = 0.07, antiderivative size = 51, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {6167, 6129, 44, 207} \[ -\frac {1}{4 a c^4 (1-a x)}-\frac {1}{4 a c^4 (1-a x)^2}-\frac {\tanh ^{-1}(a x)}{4 a c^4} \]
Antiderivative was successfully verified.
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Rule 44
Rule 207
Rule 6129
Rule 6167
Rubi steps
\begin {align*} \int \frac {e^{-2 \coth ^{-1}(a x)}}{(c-a c x)^4} \, dx &=-\int \frac {e^{-2 \tanh ^{-1}(a x)}}{(c-a c x)^4} \, dx\\ &=-\frac {\int \frac {1}{(1-a x)^3 (1+a x)} \, dx}{c^4}\\ &=-\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^4}\\ &=-\frac {1}{4 a c^4 (1-a x)^2}-\frac {1}{4 a c^4 (1-a x)}+\frac {\int \frac {1}{-1+a^2 x^2} \, dx}{4 c^4}\\ &=-\frac {1}{4 a c^4 (1-a x)^2}-\frac {1}{4 a c^4 (1-a x)}-\frac {\tanh ^{-1}(a x)}{4 a c^4}\\ \end {align*}
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Mathematica [A] time = 0.03, size = 35, normalized size = 0.69 \[ \frac {a x+(a x-1)^2 \left (-\tanh ^{-1}(a x)\right )-2}{4 a c^4 (a x-1)^2} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.51, size = 76, normalized size = 1.49 \[ \frac {2 \, a x - {\left (a^{2} x^{2} - 2 \, a x + 1\right )} \log \left (a x + 1\right ) + {\left (a^{2} x^{2} - 2 \, a x + 1\right )} \log \left (a x - 1\right ) - 4}{8 \, {\left (a^{3} c^{4} x^{2} - 2 \, a^{2} c^{4} x + a c^{4}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.14, size = 51, normalized size = 1.00 \[ -\frac {\log \left ({\left | a x + 1 \right |}\right )}{8 \, a c^{4}} + \frac {\log \left ({\left | a x - 1 \right |}\right )}{8 \, a c^{4}} + \frac {a x - 2}{4 \, {\left (a x - 1\right )}^{2} a c^{4}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.04, size = 60, normalized size = 1.18 \[ -\frac {1}{4 c^{4} a \left (a x -1\right )^{2}}+\frac {1}{4 c^{4} a \left (a x -1\right )}+\frac {\ln \left (a x -1\right )}{8 c^{4} a}-\frac {\ln \left (a x +1\right )}{8 a \,c^{4}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.31, size = 63, normalized size = 1.24 \[ \frac {a x - 2}{4 \, {\left (a^{3} c^{4} x^{2} - 2 \, a^{2} c^{4} x + a c^{4}\right )}} - \frac {\log \left (a x + 1\right )}{8 \, a c^{4}} + \frac {\log \left (a x - 1\right )}{8 \, a c^{4}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.07, size = 46, normalized size = 0.90 \[ \frac {\frac {x}{4}-\frac {1}{2\,a}}{a^2\,c^4\,x^2-2\,a\,c^4\,x+c^4}-\frac {\mathrm {atanh}\left (a\,x\right )}{4\,a\,c^4} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.28, size = 54, normalized size = 1.06 \[ \frac {a x - 2}{4 a^{3} c^{4} x^{2} - 8 a^{2} c^{4} x + 4 a c^{4}} + \frac {\frac {\log {\left (x - \frac {1}{a} \right )}}{8} - \frac {\log {\left (x + \frac {1}{a} \right )}}{8}}{a c^{4}} \]
Verification of antiderivative is not currently implemented for this CAS.
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