Integrand size = 14, antiderivative size = 35 \[ \int x \log \left (c \left (a+b x^2\right )^p\right ) \, dx=-\frac {p x^2}{2}+\frac {\left (a+b x^2\right ) \log \left (c \left (a+b x^2\right )^p\right )}{2 b} \]
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Time = 0.02 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.214, Rules used = {2504, 2436, 2332} \[ \int x \log \left (c \left (a+b x^2\right )^p\right ) \, dx=\frac {\left (a+b x^2\right ) \log \left (c \left (a+b x^2\right )^p\right )}{2 b}-\frac {p x^2}{2} \]
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Rule 2332
Rule 2436
Rule 2504
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \log \left (c (a+b x)^p\right ) \, dx,x,x^2\right ) \\ & = \frac {\text {Subst}\left (\int \log \left (c x^p\right ) \, dx,x,a+b x^2\right )}{2 b} \\ & = -\frac {p x^2}{2}+\frac {\left (a+b x^2\right ) \log \left (c \left (a+b x^2\right )^p\right )}{2 b} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.97 \[ \int x \log \left (c \left (a+b x^2\right )^p\right ) \, dx=\frac {1}{2} \left (-p x^2+\frac {\left (a+b x^2\right ) \log \left (c \left (a+b x^2\right )^p\right )}{b}\right ) \]
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Time = 0.45 (sec) , antiderivative size = 37, normalized size of antiderivative = 1.06
method | result | size |
derivativedivides | \(\frac {\ln \left (c \left (b \,x^{2}+a \right )^{p}\right ) \left (b \,x^{2}+a \right )-\left (b \,x^{2}+a \right ) p}{2 b}\) | \(37\) |
default | \(\frac {\ln \left (c \left (b \,x^{2}+a \right )^{p}\right ) \left (b \,x^{2}+a \right )-\left (b \,x^{2}+a \right ) p}{2 b}\) | \(37\) |
norman | \(-\frac {p \,x^{2}}{2}+\frac {x^{2} \ln \left (c \,{\mathrm e}^{p \ln \left (b \,x^{2}+a \right )}\right )}{2}+\frac {p a \ln \left (b \,x^{2}+a \right )}{2 b}\) | \(42\) |
parts | \(\frac {x^{2} \ln \left (c \left (b \,x^{2}+a \right )^{p}\right )}{2}-p b \left (\frac {x^{2}}{2 b}-\frac {a \ln \left (b \,x^{2}+a \right )}{2 b^{2}}\right )\) | \(46\) |
parallelrisch | \(\frac {x^{2} \ln \left (c \left (b \,x^{2}+a \right )^{p}\right ) b p -x^{2} b \,p^{2}+\ln \left (c \left (b \,x^{2}+a \right )^{p}\right ) a p +a \,p^{2}}{2 p b}\) | \(57\) |
risch | \(\frac {x^{2} \ln \left (\left (b \,x^{2}+a \right )^{p}\right )}{2}+\frac {i \pi \,x^{2} \operatorname {csgn}\left (i \left (b \,x^{2}+a \right )^{p}\right ) {\operatorname {csgn}\left (i c \left (b \,x^{2}+a \right )^{p}\right )}^{2}}{4}-\frac {i \pi \,x^{2} \operatorname {csgn}\left (i \left (b \,x^{2}+a \right )^{p}\right ) \operatorname {csgn}\left (i c \left (b \,x^{2}+a \right )^{p}\right ) \operatorname {csgn}\left (i c \right )}{4}-\frac {i \pi \,x^{2} {\operatorname {csgn}\left (i c \left (b \,x^{2}+a \right )^{p}\right )}^{3}}{4}+\frac {i \pi \,x^{2} {\operatorname {csgn}\left (i c \left (b \,x^{2}+a \right )^{p}\right )}^{2} \operatorname {csgn}\left (i c \right )}{4}+\frac {\ln \left (c \right ) x^{2}}{2}-\frac {p \,x^{2}}{2}+\frac {p a \ln \left (b \,x^{2}+a \right )}{2 b}\) | \(171\) |
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Time = 0.31 (sec) , antiderivative size = 40, normalized size of antiderivative = 1.14 \[ \int x \log \left (c \left (a+b x^2\right )^p\right ) \, dx=-\frac {b p x^{2} - b x^{2} \log \left (c\right ) - {\left (b p x^{2} + a p\right )} \log \left (b x^{2} + a\right )}{2 \, b} \]
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Time = 0.29 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.46 \[ \int x \log \left (c \left (a+b x^2\right )^p\right ) \, dx=\begin {cases} \frac {a \log {\left (c \left (a + b x^{2}\right )^{p} \right )}}{2 b} - \frac {p x^{2}}{2} + \frac {x^{2} \log {\left (c \left (a + b x^{2}\right )^{p} \right )}}{2} & \text {for}\: b \neq 0 \\\frac {x^{2} \log {\left (a^{p} c \right )}}{2} & \text {otherwise} \end {cases} \]
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Time = 0.21 (sec) , antiderivative size = 44, normalized size of antiderivative = 1.26 \[ \int x \log \left (c \left (a+b x^2\right )^p\right ) \, dx=-\frac {1}{2} \, b p {\left (\frac {x^{2}}{b} - \frac {a \log \left (b x^{2} + a\right )}{b^{2}}\right )} + \frac {1}{2} \, x^{2} \log \left ({\left (b x^{2} + a\right )}^{p} c\right ) \]
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Time = 0.28 (sec) , antiderivative size = 43, normalized size of antiderivative = 1.23 \[ \int x \log \left (c \left (a+b x^2\right )^p\right ) \, dx=-\frac {{\left (b x^{2} - {\left (b x^{2} + a\right )} \log \left (b x^{2} + a\right ) + a\right )} p - {\left (b x^{2} + a\right )} \log \left (c\right )}{2 \, b} \]
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Time = 1.30 (sec) , antiderivative size = 39, normalized size of antiderivative = 1.11 \[ \int x \log \left (c \left (a+b x^2\right )^p\right ) \, dx=\frac {x^2\,\ln \left (c\,{\left (b\,x^2+a\right )}^p\right )}{2}-\frac {p\,x^2}{2}+\frac {a\,p\,\ln \left (b\,x^2+a\right )}{2\,b} \]
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