Integrand size = 11, antiderivative size = 23 \[ \int \frac {\coth ^{-1}(\tanh (a+b x))}{x^3} \, dx=-\frac {b}{2 x}-\frac {\coth ^{-1}(\tanh (a+b x))}{2 x^2} \]
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Time = 0.01 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.182, Rules used = {2199, 30} \[ \int \frac {\coth ^{-1}(\tanh (a+b x))}{x^3} \, dx=-\frac {\coth ^{-1}(\tanh (a+b x))}{2 x^2}-\frac {b}{2 x} \]
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Rule 30
Rule 2199
Rubi steps \begin{align*} \text {integral}& = -\frac {\coth ^{-1}(\tanh (a+b x))}{2 x^2}+\frac {1}{2} b \int \frac {1}{x^2} \, dx \\ & = -\frac {b}{2 x}-\frac {\coth ^{-1}(\tanh (a+b x))}{2 x^2} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.78 \[ \int \frac {\coth ^{-1}(\tanh (a+b x))}{x^3} \, dx=-\frac {b x+\coth ^{-1}(\tanh (a+b x))}{2 x^2} \]
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Time = 0.31 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.74
method | result | size |
parallelrisch | \(-\frac {b x +\operatorname {arccoth}\left (\tanh \left (b x +a \right )\right )}{2 x^{2}}\) | \(17\) |
default | \(-\frac {b}{2 x}-\frac {\operatorname {arccoth}\left (\tanh \left (b x +a \right )\right )}{2 x^{2}}\) | \(20\) |
parts | \(-\frac {b}{2 x}-\frac {\operatorname {arccoth}\left (\tanh \left (b x +a \right )\right )}{2 x^{2}}\) | \(20\) |
risch | \(-\frac {\ln \left ({\mathrm e}^{b x +a}\right )}{2 x^{2}}-\frac {4 b x -i \pi \operatorname {csgn}\left (\frac {i {\mathrm e}^{2 b x +2 a}}{{\mathrm e}^{2 b x +2 a}+1}\right )^{3}+i \pi \,\operatorname {csgn}\left (\frac {i}{{\mathrm e}^{2 b x +2 a}+1}\right ) \operatorname {csgn}\left (\frac {i {\mathrm e}^{2 b x +2 a}}{{\mathrm e}^{2 b x +2 a}+1}\right )^{2}-i \pi \operatorname {csgn}\left (i {\mathrm e}^{b x +a}\right )^{2} \operatorname {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right )+2 i \pi \,\operatorname {csgn}\left (i {\mathrm e}^{b x +a}\right ) \operatorname {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right )^{2}+i \pi \,\operatorname {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right ) \operatorname {csgn}\left (\frac {i {\mathrm e}^{2 b x +2 a}}{{\mathrm e}^{2 b x +2 a}+1}\right )^{2}-2 i \pi \operatorname {csgn}\left (\frac {i}{{\mathrm e}^{2 b x +2 a}+1}\right )^{3}-i \pi \,\operatorname {csgn}\left (\frac {i}{{\mathrm e}^{2 b x +2 a}+1}\right ) \operatorname {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right ) \operatorname {csgn}\left (\frac {i {\mathrm e}^{2 b x +2 a}}{{\mathrm e}^{2 b x +2 a}+1}\right )-i \pi \operatorname {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right )^{3}-2 i \pi +2 i \pi \operatorname {csgn}\left (\frac {i}{{\mathrm e}^{2 b x +2 a}+1}\right )^{2}}{8 x^{2}}\) | \(337\) |
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Result contains complex when optimal does not.
Time = 0.24 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.70 \[ \int \frac {\coth ^{-1}(\tanh (a+b x))}{x^3} \, dx=\frac {-i \, \pi - 4 \, b x - 2 \, a}{4 \, x^{2}} \]
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Time = 0.18 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.83 \[ \int \frac {\coth ^{-1}(\tanh (a+b x))}{x^3} \, dx=- \frac {b}{2 x} - \frac {\operatorname {acoth}{\left (\tanh {\left (a + b x \right )} \right )}}{2 x^{2}} \]
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none
Time = 0.26 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.83 \[ \int \frac {\coth ^{-1}(\tanh (a+b x))}{x^3} \, dx=-\frac {b}{2 \, x} - \frac {\operatorname {arcoth}\left (\tanh \left (b x + a\right )\right )}{2 \, x^{2}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 71 vs. \(2 (19) = 38\).
Time = 0.28 (sec) , antiderivative size = 71, normalized size of antiderivative = 3.09 \[ \int \frac {\coth ^{-1}(\tanh (a+b x))}{x^3} \, dx=-\frac {b}{2 \, x} - \frac {\log \left (-\frac {\frac {e^{\left (2 \, b x + 2 \, a\right )} + 1}{e^{\left (2 \, b x + 2 \, a\right )} - 1} + 1}{\frac {e^{\left (2 \, b x + 2 \, a\right )} + 1}{e^{\left (2 \, b x + 2 \, a\right )} - 1} - 1}\right )}{4 \, x^{2}} \]
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Time = 3.75 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.70 \[ \int \frac {\coth ^{-1}(\tanh (a+b x))}{x^3} \, dx=-\frac {\mathrm {acoth}\left (\mathrm {tanh}\left (a+b\,x\right )\right )+b\,x}{2\,x^2} \]
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