Integrand size = 21, antiderivative size = 49 \[ \int \frac {x^2 \text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx=-\frac {x^2}{4 a}+\frac {x \sqrt {1+a^2 x^2} \text {arcsinh}(a x)}{2 a^2}-\frac {\text {arcsinh}(a x)^2}{4 a^3} \]
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Time = 0.07 (sec) , antiderivative size = 49, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {5812, 5783, 30} \[ \int \frac {x^2 \text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx=-\frac {\text {arcsinh}(a x)^2}{4 a^3}+\frac {x \sqrt {a^2 x^2+1} \text {arcsinh}(a x)}{2 a^2}-\frac {x^2}{4 a} \]
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Rule 30
Rule 5783
Rule 5812
Rubi steps \begin{align*} \text {integral}& = \frac {x \sqrt {1+a^2 x^2} \text {arcsinh}(a x)}{2 a^2}-\frac {\int \frac {\text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx}{2 a^2}-\frac {\int x \, dx}{2 a} \\ & = -\frac {x^2}{4 a}+\frac {x \sqrt {1+a^2 x^2} \text {arcsinh}(a x)}{2 a^2}-\frac {\text {arcsinh}(a x)^2}{4 a^3} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.86 \[ \int \frac {x^2 \text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx=-\frac {a^2 x^2-2 a x \sqrt {1+a^2 x^2} \text {arcsinh}(a x)+\text {arcsinh}(a x)^2}{4 a^3} \]
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Time = 0.20 (sec) , antiderivative size = 40, normalized size of antiderivative = 0.82
method | result | size |
default | \(-\frac {-2 \,\operatorname {arcsinh}\left (a x \right ) \sqrt {a^{2} x^{2}+1}\, a x +a^{2} x^{2}+\operatorname {arcsinh}\left (a x \right )^{2}+1}{4 a^{3}}\) | \(40\) |
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Time = 0.26 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.27 \[ \int \frac {x^2 \text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx=-\frac {a^{2} x^{2} - 2 \, \sqrt {a^{2} x^{2} + 1} a x \log \left (a x + \sqrt {a^{2} x^{2} + 1}\right ) + \log \left (a x + \sqrt {a^{2} x^{2} + 1}\right )^{2}}{4 \, a^{3}} \]
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Time = 0.30 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.86 \[ \int \frac {x^2 \text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx=\begin {cases} - \frac {x^{2}}{4 a} + \frac {x \sqrt {a^{2} x^{2} + 1} \operatorname {asinh}{\left (a x \right )}}{2 a^{2}} - \frac {\operatorname {asinh}^{2}{\left (a x \right )}}{4 a^{3}} & \text {for}\: a \neq 0 \\0 & \text {otherwise} \end {cases} \]
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Time = 0.19 (sec) , antiderivative size = 55, normalized size of antiderivative = 1.12 \[ \int \frac {x^2 \text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx=-\frac {1}{4} \, a {\left (\frac {x^{2}}{a^{2}} - \frac {\operatorname {arsinh}\left (a x\right )^{2}}{a^{4}}\right )} + \frac {1}{2} \, {\left (\frac {\sqrt {a^{2} x^{2} + 1} x}{a^{2}} - \frac {\operatorname {arsinh}\left (a x\right )}{a^{3}}\right )} \operatorname {arsinh}\left (a x\right ) \]
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\[ \int \frac {x^2 \text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx=\int { \frac {x^{2} \operatorname {arsinh}\left (a x\right )}{\sqrt {a^{2} x^{2} + 1}} \,d x } \]
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Timed out. \[ \int \frac {x^2 \text {arcsinh}(a x)}{\sqrt {1+a^2 x^2}} \, dx=\int \frac {x^2\,\mathrm {asinh}\left (a\,x\right )}{\sqrt {a^2\,x^2+1}} \,d x \]
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