Integrand size = 8, antiderivative size = 71 \[ \int x \text {Chi}(a+b x) \, dx=\frac {\cosh (a+b x)}{2 b^2}-\frac {a^2 \text {Chi}(a+b x)}{2 b^2}+\frac {1}{2} x^2 \text {Chi}(a+b x)+\frac {a \sinh (a+b x)}{2 b^2}-\frac {x \sinh (a+b x)}{2 b} \]
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Time = 0.16 (sec) , antiderivative size = 71, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.750, Rules used = {6668, 6874, 2717, 3377, 2718, 3382} \[ \int x \text {Chi}(a+b x) \, dx=-\frac {a^2 \text {Chi}(a+b x)}{2 b^2}+\frac {a \sinh (a+b x)}{2 b^2}+\frac {\cosh (a+b x)}{2 b^2}+\frac {1}{2} x^2 \text {Chi}(a+b x)-\frac {x \sinh (a+b x)}{2 b} \]
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Rule 2717
Rule 2718
Rule 3377
Rule 3382
Rule 6668
Rule 6874
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} x^2 \text {Chi}(a+b x)-\frac {1}{2} b \int \frac {x^2 \cosh (a+b x)}{a+b x} \, dx \\ & = \frac {1}{2} x^2 \text {Chi}(a+b x)-\frac {1}{2} b \int \left (-\frac {a \cosh (a+b x)}{b^2}+\frac {x \cosh (a+b x)}{b}+\frac {a^2 \cosh (a+b x)}{b^2 (a+b x)}\right ) \, dx \\ & = \frac {1}{2} x^2 \text {Chi}(a+b x)-\frac {1}{2} \int x \cosh (a+b x) \, dx+\frac {a \int \cosh (a+b x) \, dx}{2 b}-\frac {a^2 \int \frac {\cosh (a+b x)}{a+b x} \, dx}{2 b} \\ & = -\frac {a^2 \text {Chi}(a+b x)}{2 b^2}+\frac {1}{2} x^2 \text {Chi}(a+b x)+\frac {a \sinh (a+b x)}{2 b^2}-\frac {x \sinh (a+b x)}{2 b}+\frac {\int \sinh (a+b x) \, dx}{2 b} \\ & = \frac {\cosh (a+b x)}{2 b^2}-\frac {a^2 \text {Chi}(a+b x)}{2 b^2}+\frac {1}{2} x^2 \text {Chi}(a+b x)+\frac {a \sinh (a+b x)}{2 b^2}-\frac {x \sinh (a+b x)}{2 b} \\ \end{align*}
Time = 0.07 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.66 \[ \int x \text {Chi}(a+b x) \, dx=\frac {\cosh (a+b x)+\left (-a^2+b^2 x^2\right ) \text {Chi}(a+b x)+(a-b x) \sinh (a+b x)}{2 b^2} \]
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Time = 0.47 (sec) , antiderivative size = 58, normalized size of antiderivative = 0.82
method | result | size |
parts | \(\frac {x^{2} \operatorname {Chi}\left (b x +a \right )}{2}-\frac {a^{2} \operatorname {Chi}\left (b x +a \right )-2 a \sinh \left (b x +a \right )+\left (b x +a \right ) \sinh \left (b x +a \right )-\cosh \left (b x +a \right )}{2 b^{2}}\) | \(58\) |
derivativedivides | \(\frac {\operatorname {Chi}\left (b x +a \right ) \left (-\left (b x +a \right ) a +\frac {\left (b x +a \right )^{2}}{2}\right )+a \sinh \left (b x +a \right )-\frac {\left (b x +a \right ) \sinh \left (b x +a \right )}{2}+\frac {\cosh \left (b x +a \right )}{2}}{b^{2}}\) | \(60\) |
default | \(\frac {\operatorname {Chi}\left (b x +a \right ) \left (-\left (b x +a \right ) a +\frac {\left (b x +a \right )^{2}}{2}\right )+a \sinh \left (b x +a \right )-\frac {\left (b x +a \right ) \sinh \left (b x +a \right )}{2}+\frac {\cosh \left (b x +a \right )}{2}}{b^{2}}\) | \(60\) |
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\[ \int x \text {Chi}(a+b x) \, dx=\int { x {\rm Chi}\left (b x + a\right ) \,d x } \]
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\[ \int x \text {Chi}(a+b x) \, dx=\int x \operatorname {Chi}\left (a + b x\right )\, dx \]
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\[ \int x \text {Chi}(a+b x) \, dx=\int { x {\rm Chi}\left (b x + a\right ) \,d x } \]
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\[ \int x \text {Chi}(a+b x) \, dx=\int { x {\rm Chi}\left (b x + a\right ) \,d x } \]
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Timed out. \[ \int x \text {Chi}(a+b x) \, dx=\frac {x^2\,\mathrm {coshint}\left (a+b\,x\right )}{2}+\frac {\frac {{\mathrm {e}}^{-a-b\,x}\,\left ({\mathrm {e}}^{2\,a+2\,b\,x}-a+a\,{\mathrm {e}}^{2\,a+2\,b\,x}-2\,a^2\,\mathrm {coshint}\left (a+b\,x\right )\,{\mathrm {e}}^{a+b\,x}+1\right )}{4}+\frac {b\,{\mathrm {e}}^{-a-b\,x}\,\left (x-x\,{\mathrm {e}}^{2\,a+2\,b\,x}\right )}{4}}{b^2} \]
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