Integrand size = 22, antiderivative size = 85 \[ \int \frac {e^{\text {sech}^{-1}(c x)}}{x^3 \left (1-c^2 x^2\right )} \, dx=-\frac {1}{3 c x^3}-\frac {c}{x}-\frac {\sqrt {1-c x}}{3 c x^3 \sqrt {\frac {1}{1+c x}}}-\frac {2 c \sqrt {1-c x}}{3 x \sqrt {\frac {1}{1+c x}}}+c^2 \text {arctanh}(c x) \]
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Time = 0.12 (sec) , antiderivative size = 85, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.318, Rules used = {6476, 1972, 105, 12, 97, 331, 212} \[ \int \frac {e^{\text {sech}^{-1}(c x)}}{x^3 \left (1-c^2 x^2\right )} \, dx=c^2 \text {arctanh}(c x)-\frac {\sqrt {1-c x}}{3 c x^3 \sqrt {\frac {1}{c x+1}}}-\frac {1}{3 c x^3}-\frac {2 c \sqrt {1-c x}}{3 x \sqrt {\frac {1}{c x+1}}}-\frac {c}{x} \]
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Rule 12
Rule 97
Rule 105
Rule 212
Rule 331
Rule 1972
Rule 6476
Rubi steps \begin{align*} \text {integral}& = \frac {\int \frac {\sqrt {\frac {1}{1+c x}}}{x^4 \sqrt {1-c x}} \, dx}{c}+\frac {\int \frac {1}{x^4 \left (1-c^2 x^2\right )} \, dx}{c} \\ & = -\frac {1}{3 c x^3}+c \int \frac {1}{x^2 \left (1-c^2 x^2\right )} \, dx+\frac {\left (\sqrt {\frac {1}{1+c x}} \sqrt {1+c x}\right ) \int \frac {1}{x^4 \sqrt {1-c x} \sqrt {1+c x}} \, dx}{c} \\ & = -\frac {1}{3 c x^3}-\frac {c}{x}-\frac {\sqrt {1-c x}}{3 c x^3 \sqrt {\frac {1}{1+c x}}}+c^3 \int \frac {1}{1-c^2 x^2} \, dx-\frac {\left (\sqrt {\frac {1}{1+c x}} \sqrt {1+c x}\right ) \int -\frac {2 c^2}{x^2 \sqrt {1-c x} \sqrt {1+c x}} \, dx}{3 c} \\ & = -\frac {1}{3 c x^3}-\frac {c}{x}-\frac {\sqrt {1-c x}}{3 c x^3 \sqrt {\frac {1}{1+c x}}}+c^2 \text {arctanh}(c x)+\frac {1}{3} \left (2 c \sqrt {\frac {1}{1+c x}} \sqrt {1+c x}\right ) \int \frac {1}{x^2 \sqrt {1-c x} \sqrt {1+c x}} \, dx \\ & = -\frac {1}{3 c x^3}-\frac {c}{x}-\frac {\sqrt {1-c x}}{3 c x^3 \sqrt {\frac {1}{1+c x}}}-\frac {2 c \sqrt {1-c x}}{3 x \sqrt {\frac {1}{1+c x}}}+c^2 \text {arctanh}(c x) \\ \end{align*}
Time = 0.32 (sec) , antiderivative size = 90, normalized size of antiderivative = 1.06 \[ \int \frac {e^{\text {sech}^{-1}(c x)}}{x^3 \left (1-c^2 x^2\right )} \, dx=-\frac {2+6 c^2 x^2+2 \sqrt {\frac {1-c x}{1+c x}} \left (1+c x+2 c^2 x^2+2 c^3 x^3\right )+3 c^3 x^3 \log (1-c x)-3 c^3 x^3 \log (1+c x)}{6 c x^3} \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 0.73 (sec) , antiderivative size = 90, normalized size of antiderivative = 1.06
method | result | size |
default | \(-\frac {\sqrt {-\frac {c x -1}{c x}}\, \sqrt {\frac {c x +1}{c x}}\, \operatorname {csgn}\left (c \right )^{2} \left (2 c^{2} x^{2}+1\right )}{3 x^{2}}+\frac {\frac {c^{3} \ln \left (c x +1\right )}{2}-\frac {1}{3 x^{3}}-\frac {c^{2}}{x}-\frac {c^{3} \ln \left (c x -1\right )}{2}}{c}\) | \(90\) |
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Time = 0.25 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.05 \[ \int \frac {e^{\text {sech}^{-1}(c x)}}{x^3 \left (1-c^2 x^2\right )} \, dx=\frac {3 \, c^{3} x^{3} \log \left (c x + 1\right ) - 3 \, c^{3} x^{3} \log \left (c x - 1\right ) - 6 \, c^{2} x^{2} - 2 \, {\left (2 \, c^{3} x^{3} + c x\right )} \sqrt {\frac {c x + 1}{c x}} \sqrt {-\frac {c x - 1}{c x}} - 2}{6 \, c x^{3}} \]
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\[ \int \frac {e^{\text {sech}^{-1}(c x)}}{x^3 \left (1-c^2 x^2\right )} \, dx=- \frac {\int \frac {c x \sqrt {-1 + \frac {1}{c x}} \sqrt {1 + \frac {1}{c x}}}{c^{2} x^{6} - x^{4}}\, dx + \int \frac {1}{c^{2} x^{6} - x^{4}}\, dx}{c} \]
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\[ \int \frac {e^{\text {sech}^{-1}(c x)}}{x^3 \left (1-c^2 x^2\right )} \, dx=\int { -\frac {\sqrt {\frac {1}{c x} + 1} \sqrt {\frac {1}{c x} - 1} + \frac {1}{c x}}{{\left (c^{2} x^{2} - 1\right )} x^{3}} \,d x } \]
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\[ \int \frac {e^{\text {sech}^{-1}(c x)}}{x^3 \left (1-c^2 x^2\right )} \, dx=\int { -\frac {\sqrt {\frac {1}{c x} + 1} \sqrt {\frac {1}{c x} - 1} + \frac {1}{c x}}{{\left (c^{2} x^{2} - 1\right )} x^{3}} \,d x } \]
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Time = 5.48 (sec) , antiderivative size = 75, normalized size of antiderivative = 0.88 \[ \int \frac {e^{\text {sech}^{-1}(c x)}}{x^3 \left (1-c^2 x^2\right )} \, dx=c^2\,\mathrm {atanh}\left (c\,x\right )-\frac {\left (\frac {\sqrt {\frac {1}{c\,x}+1}}{3}+\frac {2\,c^2\,x^2\,\sqrt {\frac {1}{c\,x}+1}}{3}\right )\,\sqrt {\frac {1}{c\,x}-1}}{x^2}-\frac {c^2\,x^2+\frac {1}{3}}{c\,x^3} \]
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