Optimal. Leaf size=97 \[ \frac {\sqrt {1-a^2 x^2}}{5 a c^4 (1-a x)^3}+\frac {2 \sqrt {1-a^2 x^2}}{15 a c^4 (1-a x)^2}+\frac {2 \sqrt {1-a^2 x^2}}{15 a c^4 (1-a x)} \]
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Rubi [A]
time = 0.05, antiderivative size = 97, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 3, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {6262, 673, 665}
\begin {gather*} \frac {2 \sqrt {1-a^2 x^2}}{15 a c^4 (1-a x)}+\frac {2 \sqrt {1-a^2 x^2}}{15 a c^4 (1-a x)^2}+\frac {\sqrt {1-a^2 x^2}}{5 a c^4 (1-a x)^3} \end {gather*}
Antiderivative was successfully verified.
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Rule 665
Rule 673
Rule 6262
Rubi steps
\begin {align*} \int \frac {e^{-\tanh ^{-1}(a x)}}{(c-a c x)^4} \, dx &=\frac {\int \frac {1}{(c-a c x)^3 \sqrt {1-a^2 x^2}} \, dx}{c}\\ &=\frac {\sqrt {1-a^2 x^2}}{5 a c^4 (1-a x)^3}+\frac {2 \int \frac {1}{(c-a c x)^2 \sqrt {1-a^2 x^2}} \, dx}{5 c^2}\\ &=\frac {\sqrt {1-a^2 x^2}}{5 a c^4 (1-a x)^3}+\frac {2 \sqrt {1-a^2 x^2}}{15 a c^4 (1-a x)^2}+\frac {2 \int \frac {1}{(c-a c x) \sqrt {1-a^2 x^2}} \, dx}{15 c^3}\\ &=\frac {\sqrt {1-a^2 x^2}}{5 a c^4 (1-a x)^3}+\frac {2 \sqrt {1-a^2 x^2}}{15 a c^4 (1-a x)^2}+\frac {2 \sqrt {1-a^2 x^2}}{15 a c^4 (1-a x)}\\ \end {align*}
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Mathematica [A]
time = 0.01, size = 43, normalized size = 0.44 \begin {gather*} \frac {\sqrt {1+a x} \left (7-6 a x+2 a^2 x^2\right )}{15 a c^4 (1-a x)^{5/2}} \end {gather*}
Antiderivative was successfully verified.
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Maple [C] Result contains higher order function than in optimal. Order 3 vs. order
2.
time = 1.10, size = 394, normalized size = 4.06
method | result | size |
gosper | \(-\frac {\sqrt {-a^{2} x^{2}+1}\, \left (2 a^{2} x^{2}-6 a x +7\right )}{15 a \left (a x -1\right )^{3} c^{4}}\) | \(42\) |
trager | \(-\frac {\sqrt {-a^{2} x^{2}+1}\, \left (2 a^{2} x^{2}-6 a x +7\right )}{15 a \left (a x -1\right )^{3} c^{4}}\) | \(42\) |
default | \(\frac {\frac {\frac {\left (-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )\right )^{\frac {3}{2}}}{a \left (x -\frac {1}{a}\right )^{2}}+a \left (\sqrt {-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )}-\frac {a \arctan \left (\frac {\sqrt {a^{2}}\, x}{\sqrt {-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )}}\right )}{\sqrt {a^{2}}}\right )}{8 a^{2}}-\frac {\left (-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )\right )^{\frac {3}{2}}}{12 a^{4} \left (x -\frac {1}{a}\right )^{3}}+\frac {\sqrt {-a^{2} \left (x +\frac {1}{a}\right )^{2}+2 a \left (x +\frac {1}{a}\right )}+\frac {a \arctan \left (\frac {\sqrt {a^{2}}\, x}{\sqrt {-a^{2} \left (x +\frac {1}{a}\right )^{2}+2 a \left (x +\frac {1}{a}\right )}}\right )}{\sqrt {a^{2}}}}{16 a}+\frac {\frac {\left (-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )\right )^{\frac {3}{2}}}{5 a \left (x -\frac {1}{a}\right )^{4}}-\frac {\left (-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )\right )^{\frac {3}{2}}}{15 \left (x -\frac {1}{a}\right )^{3}}}{2 a^{4}}-\frac {\sqrt {-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )}-\frac {a \arctan \left (\frac {\sqrt {a^{2}}\, x}{\sqrt {-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )}}\right )}{\sqrt {a^{2}}}}{16 a}}{c^{4}}\) | \(394\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.38, size = 91, normalized size = 0.94 \begin {gather*} \frac {7 \, a^{3} x^{3} - 21 \, a^{2} x^{2} + 21 \, a x - {\left (2 \, a^{2} x^{2} - 6 \, a x + 7\right )} \sqrt {-a^{2} x^{2} + 1} - 7}{15 \, {\left (a^{4} c^{4} x^{3} - 3 \, a^{3} c^{4} x^{2} + 3 \, a^{2} c^{4} x - a c^{4}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \frac {\int \frac {\sqrt {- a^{2} x^{2} + 1}}{a^{5} x^{5} - 3 a^{4} x^{4} + 2 a^{3} x^{3} + 2 a^{2} x^{2} - 3 a x + 1}\, dx}{c^{4}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.45, size = 145, normalized size = 1.49 \begin {gather*} -\frac {2 \, {\left (\frac {20 \, {\left (\sqrt {-a^{2} x^{2} + 1} {\left | a \right |} + a\right )}}{a^{2} x} - \frac {40 \, {\left (\sqrt {-a^{2} x^{2} + 1} {\left | a \right |} + a\right )}^{2}}{a^{4} x^{2}} + \frac {30 \, {\left (\sqrt {-a^{2} x^{2} + 1} {\left | a \right |} + a\right )}^{3}}{a^{6} x^{3}} - \frac {15 \, {\left (\sqrt {-a^{2} x^{2} + 1} {\left | a \right |} + a\right )}^{4}}{a^{8} x^{4}} - 7\right )}}{15 \, c^{4} {\left (\frac {\sqrt {-a^{2} x^{2} + 1} {\left | a \right |} + a}{a^{2} x} - 1\right )}^{5} {\left | a \right |}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.06, size = 127, normalized size = 1.31 \begin {gather*} \frac {\sqrt {1-a^2\,x^2}\,\left (\frac {2\,a^3}{15\,c^4\,\left (x\,\sqrt {-a^2}-\frac {\sqrt {-a^2}}{a}\right )}-\frac {a^3}{5\,c^4\,{\left (x\,\sqrt {-a^2}-\frac {\sqrt {-a^2}}{a}\right )}^3}+\frac {2\,a^4}{15\,c^4\,{\left (x\,\sqrt {-a^2}-\frac {\sqrt {-a^2}}{a}\right )}^2\,\sqrt {-a^2}}\right )}{a^3\,\sqrt {-a^2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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