Integrand size = 10, antiderivative size = 112 \[ \int x^2 \text {Chi}(b x)^2 \, dx=-\frac {x}{2 b^2}+\frac {4 x \cosh (b x) \text {Chi}(b x)}{3 b^2}+\frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {5 \cosh (b x) \sinh (b x)}{6 b^3}-\frac {4 \text {Chi}(b x) \sinh (b x)}{3 b^3}-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b}+\frac {x \sinh ^2(b x)}{3 b^2}+\frac {2 \text {Shi}(2 b x)}{3 b^3} \]
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Time = 0.11 (sec) , antiderivative size = 112, normalized size of antiderivative = 1.00, number of steps used = 15, number of rules used = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 1.000, Rules used = {6672, 6678, 12, 5480, 2715, 8, 6684, 6676, 5556, 3379} \[ \int x^2 \text {Chi}(b x)^2 \, dx=-\frac {4 \text {Chi}(b x) \sinh (b x)}{3 b^3}+\frac {2 \text {Shi}(2 b x)}{3 b^3}-\frac {5 \sinh (b x) \cosh (b x)}{6 b^3}+\frac {4 x \text {Chi}(b x) \cosh (b x)}{3 b^2}-\frac {x}{2 b^2}+\frac {x \sinh ^2(b x)}{3 b^2}+\frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b} \]
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Rule 8
Rule 12
Rule 2715
Rule 3379
Rule 5480
Rule 5556
Rule 6672
Rule 6676
Rule 6678
Rule 6684
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {2}{3} \int x^2 \cosh (b x) \text {Chi}(b x) \, dx \\ & = \frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b}+\frac {2}{3} \int \frac {x \cosh (b x) \sinh (b x)}{b} \, dx+\frac {4 \int x \text {Chi}(b x) \sinh (b x) \, dx}{3 b} \\ & = \frac {4 x \cosh (b x) \text {Chi}(b x)}{3 b^2}+\frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b}-\frac {4 \int \cosh (b x) \text {Chi}(b x) \, dx}{3 b^2}+\frac {2 \int x \cosh (b x) \sinh (b x) \, dx}{3 b}-\frac {4 \int \frac {\cosh ^2(b x)}{b} \, dx}{3 b} \\ & = \frac {4 x \cosh (b x) \text {Chi}(b x)}{3 b^2}+\frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {4 \text {Chi}(b x) \sinh (b x)}{3 b^3}-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b}+\frac {x \sinh ^2(b x)}{3 b^2}-\frac {\int \sinh ^2(b x) \, dx}{3 b^2}-\frac {4 \int \cosh ^2(b x) \, dx}{3 b^2}+\frac {4 \int \frac {\cosh (b x) \sinh (b x)}{b x} \, dx}{3 b^2} \\ & = \frac {4 x \cosh (b x) \text {Chi}(b x)}{3 b^2}+\frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {5 \cosh (b x) \sinh (b x)}{6 b^3}-\frac {4 \text {Chi}(b x) \sinh (b x)}{3 b^3}-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b}+\frac {x \sinh ^2(b x)}{3 b^2}+\frac {4 \int \frac {\cosh (b x) \sinh (b x)}{x} \, dx}{3 b^3}+\frac {\int 1 \, dx}{6 b^2}-\frac {2 \int 1 \, dx}{3 b^2} \\ & = -\frac {x}{2 b^2}+\frac {4 x \cosh (b x) \text {Chi}(b x)}{3 b^2}+\frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {5 \cosh (b x) \sinh (b x)}{6 b^3}-\frac {4 \text {Chi}(b x) \sinh (b x)}{3 b^3}-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b}+\frac {x \sinh ^2(b x)}{3 b^2}+\frac {4 \int \frac {\sinh (2 b x)}{2 x} \, dx}{3 b^3} \\ & = -\frac {x}{2 b^2}+\frac {4 x \cosh (b x) \text {Chi}(b x)}{3 b^2}+\frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {5 \cosh (b x) \sinh (b x)}{6 b^3}-\frac {4 \text {Chi}(b x) \sinh (b x)}{3 b^3}-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b}+\frac {x \sinh ^2(b x)}{3 b^2}+\frac {2 \int \frac {\sinh (2 b x)}{x} \, dx}{3 b^3} \\ & = -\frac {x}{2 b^2}+\frac {4 x \cosh (b x) \text {Chi}(b x)}{3 b^2}+\frac {1}{3} x^3 \text {Chi}(b x)^2-\frac {5 \cosh (b x) \sinh (b x)}{6 b^3}-\frac {4 \text {Chi}(b x) \sinh (b x)}{3 b^3}-\frac {2 x^2 \text {Chi}(b x) \sinh (b x)}{3 b}+\frac {x \sinh ^2(b x)}{3 b^2}+\frac {2 \text {Shi}(2 b x)}{3 b^3} \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 78, normalized size of antiderivative = 0.70 \[ \int x^2 \text {Chi}(b x)^2 \, dx=\frac {-8 b x+2 b x \cosh (2 b x)+4 b^3 x^3 \text {Chi}(b x)^2-8 \text {Chi}(b x) \left (-2 b x \cosh (b x)+\left (2+b^2 x^2\right ) \sinh (b x)\right )-5 \sinh (2 b x)+8 \text {Shi}(2 b x)}{12 b^3} \]
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Time = 0.62 (sec) , antiderivative size = 84, normalized size of antiderivative = 0.75
method | result | size |
derivativedivides | \(\frac {\frac {b^{3} x^{3} \operatorname {Chi}\left (b x \right )^{2}}{3}-2 \,\operatorname {Chi}\left (b x \right ) \left (\frac {b^{2} x^{2} \sinh \left (b x \right )}{3}-\frac {2 b x \cosh \left (b x \right )}{3}+\frac {2 \sinh \left (b x \right )}{3}\right )+\frac {b x \cosh \left (b x \right )^{2}}{3}-\frac {5 \cosh \left (b x \right ) \sinh \left (b x \right )}{6}-\frac {5 b x}{6}+\frac {2 \,\operatorname {Shi}\left (2 b x \right )}{3}}{b^{3}}\) | \(84\) |
default | \(\frac {\frac {b^{3} x^{3} \operatorname {Chi}\left (b x \right )^{2}}{3}-2 \,\operatorname {Chi}\left (b x \right ) \left (\frac {b^{2} x^{2} \sinh \left (b x \right )}{3}-\frac {2 b x \cosh \left (b x \right )}{3}+\frac {2 \sinh \left (b x \right )}{3}\right )+\frac {b x \cosh \left (b x \right )^{2}}{3}-\frac {5 \cosh \left (b x \right ) \sinh \left (b x \right )}{6}-\frac {5 b x}{6}+\frac {2 \,\operatorname {Shi}\left (2 b x \right )}{3}}{b^{3}}\) | \(84\) |
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\[ \int x^2 \text {Chi}(b x)^2 \, dx=\int { x^{2} {\rm Chi}\left (b x\right )^{2} \,d x } \]
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\[ \int x^2 \text {Chi}(b x)^2 \, dx=\int x^{2} \operatorname {Chi}^{2}\left (b x\right )\, dx \]
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\[ \int x^2 \text {Chi}(b x)^2 \, dx=\int { x^{2} {\rm Chi}\left (b x\right )^{2} \,d x } \]
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\[ \int x^2 \text {Chi}(b x)^2 \, dx=\int { x^{2} {\rm Chi}\left (b x\right )^{2} \,d x } \]
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Timed out. \[ \int x^2 \text {Chi}(b x)^2 \, dx=\int x^2\,{\mathrm {coshint}\left (b\,x\right )}^2 \,d x \]
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