Integrand size = 19, antiderivative size = 449 \[ \int \frac {x^4 \cosh (c+d x)}{\left (a+b x^2\right )^2} \, dx=\frac {x \cosh (c+d x)}{2 b^2}-\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {3 \sqrt {-a} \cosh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^{5/2}}-\frac {3 \sqrt {-a} \cosh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{4 b^{5/2}}-\frac {a d \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right ) \sinh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right )}{4 b^3}-\frac {a d \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right ) \sinh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right )}{4 b^3}+\frac {\sinh (c+d x)}{b^2 d}+\frac {a d \cosh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^3}-\frac {3 \sqrt {-a} \sinh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^{5/2}}-\frac {a d \cosh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{4 b^3}-\frac {3 \sqrt {-a} \sinh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{4 b^{5/2}} \]
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Time = 0.66 (sec) , antiderivative size = 449, normalized size of antiderivative = 1.00, number of steps used = 24, number of rules used = 9, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.474, Rules used = {5399, 5401, 2717, 5389, 3384, 3379, 3382, 5400, 3377} \[ \int \frac {x^4 \cosh (c+d x)}{\left (a+b x^2\right )^2} \, dx=\frac {3 \sqrt {-a} \cosh \left (\frac {\sqrt {-a} d}{\sqrt {b}}+c\right ) \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^{5/2}}-\frac {3 \sqrt {-a} \cosh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Chi}\left (x d+\frac {\sqrt {-a} d}{\sqrt {b}}\right )}{4 b^{5/2}}-\frac {3 \sqrt {-a} \sinh \left (\frac {\sqrt {-a} d}{\sqrt {b}}+c\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^{5/2}}-\frac {3 \sqrt {-a} \sinh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (x d+\frac {\sqrt {-a} d}{\sqrt {b}}\right )}{4 b^{5/2}}-\frac {a d \sinh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Chi}\left (x d+\frac {\sqrt {-a} d}{\sqrt {b}}\right )}{4 b^3}-\frac {a d \sinh \left (\frac {\sqrt {-a} d}{\sqrt {b}}+c\right ) \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^3}+\frac {a d \cosh \left (\frac {\sqrt {-a} d}{\sqrt {b}}+c\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^3}-\frac {a d \cosh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (x d+\frac {\sqrt {-a} d}{\sqrt {b}}\right )}{4 b^3}-\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {\sinh (c+d x)}{b^2 d}+\frac {x \cosh (c+d x)}{2 b^2} \]
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Rule 2717
Rule 3377
Rule 3379
Rule 3382
Rule 3384
Rule 5389
Rule 5399
Rule 5400
Rule 5401
Rubi steps \begin{align*} \text {integral}& = -\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {3 \int \frac {x^2 \cosh (c+d x)}{a+b x^2} \, dx}{2 b}+\frac {d \int \frac {x^3 \sinh (c+d x)}{a+b x^2} \, dx}{2 b} \\ & = -\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {3 \int \left (\frac {\cosh (c+d x)}{b}-\frac {a \cosh (c+d x)}{b \left (a+b x^2\right )}\right ) \, dx}{2 b}+\frac {d \int \left (\frac {x \sinh (c+d x)}{b}-\frac {a x \sinh (c+d x)}{b \left (a+b x^2\right )}\right ) \, dx}{2 b} \\ & = -\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {3 \int \cosh (c+d x) \, dx}{2 b^2}-\frac {(3 a) \int \frac {\cosh (c+d x)}{a+b x^2} \, dx}{2 b^2}+\frac {d \int x \sinh (c+d x) \, dx}{2 b^2}-\frac {(a d) \int \frac {x \sinh (c+d x)}{a+b x^2} \, dx}{2 b^2} \\ & = \frac {x \cosh (c+d x)}{2 b^2}-\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {3 \sinh (c+d x)}{2 b^2 d}-\frac {\int \cosh (c+d x) \, dx}{2 b^2}-\frac {(3 a) \int \left (\frac {\sqrt {-a} \cosh (c+d x)}{2 a \left (\sqrt {-a}-\sqrt {b} x\right )}+\frac {\sqrt {-a} \cosh (c+d x)}{2 a \left (\sqrt {-a}+\sqrt {b} x\right )}\right ) \, dx}{2 b^2}-\frac {(a d) \int \left (-\frac {\sinh (c+d x)}{2 \sqrt {b} \left (\sqrt {-a}-\sqrt {b} x\right )}+\frac {\sinh (c+d x)}{2 \sqrt {b} \left (\sqrt {-a}+\sqrt {b} x\right )}\right ) \, dx}{2 b^2} \\ & = \frac {x \cosh (c+d x)}{2 b^2}-\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {\sinh (c+d x)}{b^2 d}-\frac {\left (3 \sqrt {-a}\right ) \int \frac {\cosh (c+d x)}{\sqrt {-a}-\sqrt {b} x} \, dx}{4 b^2}-\frac {\left (3 \sqrt {-a}\right ) \int \frac {\cosh (c+d x)}{\sqrt {-a}+\sqrt {b} x} \, dx}{4 b^2}+\frac {(a d) \int \frac {\sinh (c+d x)}{\sqrt {-a}-\sqrt {b} x} \, dx}{4 b^{5/2}}-\frac {(a d) \int \frac {\sinh (c+d x)}{\sqrt {-a}+\sqrt {b} x} \, dx}{4 b^{5/2}} \\ & = \frac {x \cosh (c+d x)}{2 b^2}-\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {\sinh (c+d x)}{b^2 d}-\frac {\left (3 \sqrt {-a} \cosh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right )\right ) \int \frac {\cosh \left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{\sqrt {-a}+\sqrt {b} x} \, dx}{4 b^2}-\frac {\left (a d \cosh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right )\right ) \int \frac {\sinh \left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{\sqrt {-a}+\sqrt {b} x} \, dx}{4 b^{5/2}}-\frac {\left (3 \sqrt {-a} \cosh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right )\right ) \int \frac {\cosh \left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{\sqrt {-a}-\sqrt {b} x} \, dx}{4 b^2}-\frac {\left (a d \cosh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right )\right ) \int \frac {\sinh \left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{\sqrt {-a}-\sqrt {b} x} \, dx}{4 b^{5/2}}-\frac {\left (3 \sqrt {-a} \sinh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right )\right ) \int \frac {\sinh \left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{\sqrt {-a}+\sqrt {b} x} \, dx}{4 b^2}-\frac {\left (a d \sinh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right )\right ) \int \frac {\cosh \left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{\sqrt {-a}+\sqrt {b} x} \, dx}{4 b^{5/2}}+\frac {\left (3 \sqrt {-a} \sinh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right )\right ) \int \frac {\sinh \left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{\sqrt {-a}-\sqrt {b} x} \, dx}{4 b^2}+\frac {\left (a d \sinh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right )\right ) \int \frac {\cosh \left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{\sqrt {-a}-\sqrt {b} x} \, dx}{4 b^{5/2}} \\ & = \frac {x \cosh (c+d x)}{2 b^2}-\frac {x^3 \cosh (c+d x)}{2 b \left (a+b x^2\right )}+\frac {3 \sqrt {-a} \cosh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^{5/2}}-\frac {3 \sqrt {-a} \cosh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{4 b^{5/2}}-\frac {a d \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right ) \sinh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right )}{4 b^3}-\frac {a d \text {Chi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right ) \sinh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right )}{4 b^3}+\frac {\sinh (c+d x)}{b^2 d}+\frac {a d \cosh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^3}-\frac {3 \sqrt {-a} \sinh \left (c+\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}-d x\right )}{4 b^{5/2}}-\frac {a d \cosh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{4 b^3}-\frac {3 \sqrt {-a} \sinh \left (c-\frac {\sqrt {-a} d}{\sqrt {b}}\right ) \text {Shi}\left (\frac {\sqrt {-a} d}{\sqrt {b}}+d x\right )}{4 b^{5/2}} \\ \end{align*}
Result contains complex when optimal does not.
Time = 2.27 (sec) , antiderivative size = 307, normalized size of antiderivative = 0.68 \[ \int \frac {x^4 \cosh (c+d x)}{\left (a+b x^2\right )^2} \, dx=\frac {-\sqrt {a} e^{c-\frac {i \sqrt {a} d}{\sqrt {b}}} \left (\left (-3 i \sqrt {b}+\sqrt {a} d\right ) e^{\frac {2 i \sqrt {a} d}{\sqrt {b}}} \operatorname {ExpIntegralEi}\left (d \left (-\frac {i \sqrt {a}}{\sqrt {b}}+x\right )\right )+\left (3 i \sqrt {b}+\sqrt {a} d\right ) \operatorname {ExpIntegralEi}\left (d \left (\frac {i \sqrt {a}}{\sqrt {b}}+x\right )\right )\right )+\sqrt {a} e^{-c-\frac {i \sqrt {a} d}{\sqrt {b}}} \left (\left (-3 i \sqrt {b}+\sqrt {a} d\right ) e^{\frac {2 i \sqrt {a} d}{\sqrt {b}}} \operatorname {ExpIntegralEi}\left (-\frac {i \sqrt {a} d}{\sqrt {b}}-d x\right )+\left (3 i \sqrt {b}+\sqrt {a} d\right ) \operatorname {ExpIntegralEi}\left (\frac {i \sqrt {a} d}{\sqrt {b}}-d x\right )\right )+4 b \cosh (d x) \left (\frac {a x \cosh (c)}{a+b x^2}+\frac {2 \sinh (c)}{d}\right )+4 b \left (\frac {2 \cosh (c)}{d}+\frac {a x \sinh (c)}{a+b x^2}\right ) \sinh (d x)}{8 b^3} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(1037\) vs. \(2(349)=698\).
Time = 0.42 (sec) , antiderivative size = 1038, normalized size of antiderivative = 2.31
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Leaf count of result is larger than twice the leaf count of optimal. 1179 vs. \(2 (349) = 698\).
Time = 0.27 (sec) , antiderivative size = 1179, normalized size of antiderivative = 2.63 \[ \int \frac {x^4 \cosh (c+d x)}{\left (a+b x^2\right )^2} \, dx=\text {Too large to display} \]
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\[ \int \frac {x^4 \cosh (c+d x)}{\left (a+b x^2\right )^2} \, dx=\int \frac {x^{4} \cosh {\left (c + d x \right )}}{\left (a + b x^{2}\right )^{2}}\, dx \]
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\[ \int \frac {x^4 \cosh (c+d x)}{\left (a+b x^2\right )^2} \, dx=\int { \frac {x^{4} \cosh \left (d x + c\right )}{{\left (b x^{2} + a\right )}^{2}} \,d x } \]
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Exception generated. \[ \int \frac {x^4 \cosh (c+d x)}{\left (a+b x^2\right )^2} \, dx=\text {Exception raised: AttributeError} \]
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Timed out. \[ \int \frac {x^4 \cosh (c+d x)}{\left (a+b x^2\right )^2} \, dx=\int \frac {x^4\,\mathrm {cosh}\left (c+d\,x\right )}{{\left (b\,x^2+a\right )}^2} \,d x \]
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