Integrand size = 8, antiderivative size = 51 \[ \int x^5 \cot ^{-1}(a x) \, dx=\frac {x}{6 a^5}-\frac {x^3}{18 a^3}+\frac {x^5}{30 a}+\frac {1}{6} x^6 \cot ^{-1}(a x)-\frac {\arctan (a x)}{6 a^6} \]
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Time = 0.02 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.375, Rules used = {4947, 308, 209} \[ \int x^5 \cot ^{-1}(a x) \, dx=-\frac {\arctan (a x)}{6 a^6}+\frac {x}{6 a^5}-\frac {x^3}{18 a^3}+\frac {1}{6} x^6 \cot ^{-1}(a x)+\frac {x^5}{30 a} \]
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Rule 209
Rule 308
Rule 4947
Rubi steps \begin{align*} \text {integral}& = \frac {1}{6} x^6 \cot ^{-1}(a x)+\frac {1}{6} a \int \frac {x^6}{1+a^2 x^2} \, dx \\ & = \frac {1}{6} x^6 \cot ^{-1}(a x)+\frac {1}{6} a \int \left (\frac {1}{a^6}-\frac {x^2}{a^4}+\frac {x^4}{a^2}-\frac {1}{a^6 \left (1+a^2 x^2\right )}\right ) \, dx \\ & = \frac {x}{6 a^5}-\frac {x^3}{18 a^3}+\frac {x^5}{30 a}+\frac {1}{6} x^6 \cot ^{-1}(a x)-\frac {\int \frac {1}{1+a^2 x^2} \, dx}{6 a^5} \\ & = \frac {x}{6 a^5}-\frac {x^3}{18 a^3}+\frac {x^5}{30 a}+\frac {1}{6} x^6 \cot ^{-1}(a x)-\frac {\arctan (a x)}{6 a^6} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.00 \[ \int x^5 \cot ^{-1}(a x) \, dx=\frac {x}{6 a^5}-\frac {x^3}{18 a^3}+\frac {x^5}{30 a}+\frac {1}{6} x^6 \cot ^{-1}(a x)-\frac {\arctan (a x)}{6 a^6} \]
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Time = 0.17 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.86
method | result | size |
derivativedivides | \(\frac {\frac {a^{6} x^{6} \operatorname {arccot}\left (a x \right )}{6}+\frac {a^{5} x^{5}}{30}-\frac {a^{3} x^{3}}{18}+\frac {a x}{6}-\frac {\arctan \left (a x \right )}{6}}{a^{6}}\) | \(44\) |
default | \(\frac {\frac {a^{6} x^{6} \operatorname {arccot}\left (a x \right )}{6}+\frac {a^{5} x^{5}}{30}-\frac {a^{3} x^{3}}{18}+\frac {a x}{6}-\frac {\arctan \left (a x \right )}{6}}{a^{6}}\) | \(44\) |
parallelrisch | \(\frac {15 a^{6} x^{6} \operatorname {arccot}\left (a x \right )+3 a^{5} x^{5}-5 a^{3} x^{3}+15 a x +15 \,\operatorname {arccot}\left (a x \right )}{90 a^{6}}\) | \(45\) |
parts | \(\frac {x^{6} \operatorname {arccot}\left (a x \right )}{6}+\frac {a \left (\frac {\frac {1}{5} a^{4} x^{5}-\frac {1}{3} a^{2} x^{3}+x}{a^{6}}-\frac {\arctan \left (a x \right )}{a^{7}}\right )}{6}\) | \(46\) |
risch | \(\frac {i x^{6} \ln \left (i a x +1\right )}{12}-\frac {i x^{6} \ln \left (-i a x +1\right )}{12}+\frac {x^{6} \pi }{12}+\frac {x^{5}}{30 a}-\frac {x^{3}}{18 a^{3}}+\frac {x}{6 a^{5}}-\frac {\arctan \left (a x \right )}{6 a^{6}}\) | \(67\) |
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Time = 0.26 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.80 \[ \int x^5 \cot ^{-1}(a x) \, dx=\frac {3 \, a^{5} x^{5} - 5 \, a^{3} x^{3} + 15 \, a x + 15 \, {\left (a^{6} x^{6} + 1\right )} \operatorname {arccot}\left (a x\right )}{90 \, a^{6}} \]
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Time = 0.29 (sec) , antiderivative size = 48, normalized size of antiderivative = 0.94 \[ \int x^5 \cot ^{-1}(a x) \, dx=\begin {cases} \frac {x^{6} \operatorname {acot}{\left (a x \right )}}{6} + \frac {x^{5}}{30 a} - \frac {x^{3}}{18 a^{3}} + \frac {x}{6 a^{5}} + \frac {\operatorname {acot}{\left (a x \right )}}{6 a^{6}} & \text {for}\: a \neq 0 \\\frac {\pi x^{6}}{12} & \text {otherwise} \end {cases} \]
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Time = 0.26 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.92 \[ \int x^5 \cot ^{-1}(a x) \, dx=\frac {1}{6} \, x^{6} \operatorname {arccot}\left (a x\right ) + \frac {1}{90} \, a {\left (\frac {3 \, a^{4} x^{5} - 5 \, a^{2} x^{3} + 15 \, x}{a^{6}} - \frac {15 \, \arctan \left (a x\right )}{a^{7}}\right )} \]
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Time = 0.28 (sec) , antiderivative size = 59, normalized size of antiderivative = 1.16 \[ \int x^5 \cot ^{-1}(a x) \, dx=\frac {1}{90} \, {\left (\frac {15 \, x^{6} \arctan \left (\frac {1}{a x}\right )}{a} - \frac {x^{5} {\left (\frac {5}{a^{2} x^{2}} - \frac {15}{a^{4} x^{4}} - 3\right )}}{a^{2}} + \frac {15 \, \arctan \left (\frac {1}{a x}\right )}{a^{7}}\right )} a \]
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Time = 0.95 (sec) , antiderivative size = 55, normalized size of antiderivative = 1.08 \[ \int x^5 \cot ^{-1}(a x) \, dx=\left \{\begin {array}{cl} \frac {\pi \,x^6}{12} & \text {\ if\ \ }a=0\\ \frac {x^6\,\mathrm {acot}\left (a\,x\right )}{6}-\frac {\frac {\mathrm {atan}\left (a\,x\right )}{6}-\frac {a\,x}{6}+\frac {a^3\,x^3}{18}-\frac {a^5\,x^5}{30}}{a^6} & \text {\ if\ \ }a\neq 0 \end {array}\right . \]
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