Integrand size = 14, antiderivative size = 47 \[ \int x^{-1+n} \coth ^{-1}\left (a+b x^n\right ) \, dx=\frac {\left (a+b x^n\right ) \coth ^{-1}\left (a+b x^n\right )}{b n}+\frac {\log \left (1-\left (a+b x^n\right )^2\right )}{2 b n} \]
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Time = 0.05 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {6847, 6239, 6022, 266} \[ \int x^{-1+n} \coth ^{-1}\left (a+b x^n\right ) \, dx=\frac {\log \left (1-\left (a+b x^n\right )^2\right )}{2 b n}+\frac {\left (a+b x^n\right ) \coth ^{-1}\left (a+b x^n\right )}{b n} \]
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Rule 266
Rule 6022
Rule 6239
Rule 6847
Rubi steps \begin{align*} \text {integral}& = \frac {\text {Subst}\left (\int \coth ^{-1}(a+b x) \, dx,x,x^n\right )}{n} \\ & = \frac {\text {Subst}\left (\int \coth ^{-1}(x) \, dx,x,a+b x^n\right )}{b n} \\ & = \frac {\left (a+b x^n\right ) \coth ^{-1}\left (a+b x^n\right )}{b n}-\frac {\text {Subst}\left (\int \frac {x}{1-x^2} \, dx,x,a+b x^n\right )}{b n} \\ & = \frac {\left (a+b x^n\right ) \coth ^{-1}\left (a+b x^n\right )}{b n}+\frac {\log \left (1-\left (a+b x^n\right )^2\right )}{2 b n} \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.89 \[ \int x^{-1+n} \coth ^{-1}\left (a+b x^n\right ) \, dx=\frac {2 \left (a+b x^n\right ) \coth ^{-1}\left (a+b x^n\right )+\log \left (1-\left (a+b x^n\right )^2\right )}{2 b n} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(117\) vs. \(2(45)=90\).
Time = 4.40 (sec) , antiderivative size = 118, normalized size of antiderivative = 2.51
method | result | size |
risch | \(\frac {x^{n} \ln \left (a +b \,x^{n}+1\right )}{2 n}-\frac {x^{n} \ln \left (-1+a +b \,x^{n}\right )}{2 n}+\frac {\ln \left (x^{n}+\frac {1+a}{b}\right ) a}{2 b n}-\frac {\ln \left (x^{n}+\frac {-1+a}{b}\right ) a}{2 b n}+\frac {\ln \left (x^{n}+\frac {1+a}{b}\right )}{2 b n}+\frac {\ln \left (x^{n}+\frac {-1+a}{b}\right )}{2 b n}\) | \(118\) |
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Leaf count of result is larger than twice the leaf count of optimal. 108 vs. \(2 (45) = 90\).
Time = 0.26 (sec) , antiderivative size = 108, normalized size of antiderivative = 2.30 \[ \int x^{-1+n} \coth ^{-1}\left (a+b x^n\right ) \, dx=\frac {{\left (a + 1\right )} \log \left (b \cosh \left (n \log \left (x\right )\right ) + b \sinh \left (n \log \left (x\right )\right ) + a + 1\right ) - {\left (a - 1\right )} \log \left (b \cosh \left (n \log \left (x\right )\right ) + b \sinh \left (n \log \left (x\right )\right ) + a - 1\right ) + {\left (b \cosh \left (n \log \left (x\right )\right ) + b \sinh \left (n \log \left (x\right )\right )\right )} \log \left (\frac {b \cosh \left (n \log \left (x\right )\right ) + b \sinh \left (n \log \left (x\right )\right ) + a + 1}{b \cosh \left (n \log \left (x\right )\right ) + b \sinh \left (n \log \left (x\right )\right ) + a - 1}\right )}{2 \, b n} \]
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Exception generated. \[ \int x^{-1+n} \coth ^{-1}\left (a+b x^n\right ) \, dx=\text {Exception raised: HeuristicGCDFailed} \]
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none
Time = 0.20 (sec) , antiderivative size = 40, normalized size of antiderivative = 0.85 \[ \int x^{-1+n} \coth ^{-1}\left (a+b x^n\right ) \, dx=\frac {2 \, {\left (b x^{n} + a\right )} \operatorname {arcoth}\left (b x^{n} + a\right ) + \log \left (-{\left (b x^{n} + a\right )}^{2} + 1\right )}{2 \, b n} \]
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Leaf count of result is larger than twice the leaf count of optimal. 119 vs. \(2 (45) = 90\).
Time = 0.29 (sec) , antiderivative size = 119, normalized size of antiderivative = 2.53 \[ \int x^{-1+n} \coth ^{-1}\left (a+b x^n\right ) \, dx=\frac {{\left ({\left (a + 1\right )} b - {\left (a - 1\right )} b\right )} {\left (\frac {\log \left (\frac {{\left | b x^{n} + a + 1 \right |}}{{\left | b x^{n} + a - 1 \right |}}\right )}{b^{2}} - \frac {\log \left ({\left | \frac {b x^{n} + a + 1}{b x^{n} + a - 1} - 1 \right |}\right )}{b^{2}} + \frac {\log \left (\frac {b x^{n} + a + 1}{b x^{n} + a - 1}\right )}{b^{2} {\left (\frac {b x^{n} + a + 1}{b x^{n} + a - 1} - 1\right )}}\right )}}{2 \, n} \]
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Time = 5.53 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.23 \[ \int x^{-1+n} \coth ^{-1}\left (a+b x^n\right ) \, dx=\frac {\frac {\ln \left (a^2+b^2\,x^{2\,n}+2\,a\,b\,x^n-1\right )}{2}+a\,\mathrm {acoth}\left (a+b\,x^n\right )}{b\,n}+\frac {x^n\,\mathrm {acoth}\left (a+b\,x^n\right )}{n} \]
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