Integrand size = 23, antiderivative size = 143 \[ \int \frac {x^3 (a+b \arctan (c x))}{\left (d+e x^2\right )^{5/2}} \, dx=\frac {b c x}{3 \left (c^2 d-e\right ) e \sqrt {d+e x^2}}+\frac {d (a+b \arctan (c x))}{3 e^2 \left (d+e x^2\right )^{3/2}}-\frac {a+b \arctan (c x)}{e^2 \sqrt {d+e x^2}}+\frac {b c \left (2 c^2 d-3 e\right ) \arctan \left (\frac {\sqrt {c^2 d-e} x}{\sqrt {d+e x^2}}\right )}{3 \left (c^2 d-e\right )^{3/2} e^2} \]
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Time = 0.15 (sec) , antiderivative size = 143, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.304, Rules used = {272, 45, 5096, 12, 541, 385, 209} \[ \int \frac {x^3 (a+b \arctan (c x))}{\left (d+e x^2\right )^{5/2}} \, dx=-\frac {a+b \arctan (c x)}{e^2 \sqrt {d+e x^2}}+\frac {d (a+b \arctan (c x))}{3 e^2 \left (d+e x^2\right )^{3/2}}+\frac {b c \left (2 c^2 d-3 e\right ) \arctan \left (\frac {x \sqrt {c^2 d-e}}{\sqrt {d+e x^2}}\right )}{3 e^2 \left (c^2 d-e\right )^{3/2}}+\frac {b c x}{3 e \left (c^2 d-e\right ) \sqrt {d+e x^2}} \]
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Rule 12
Rule 45
Rule 209
Rule 272
Rule 385
Rule 541
Rule 5096
Rubi steps \begin{align*} \text {integral}& = \frac {d (a+b \arctan (c x))}{3 e^2 \left (d+e x^2\right )^{3/2}}-\frac {a+b \arctan (c x)}{e^2 \sqrt {d+e x^2}}-(b c) \int \frac {-2 d-3 e x^2}{3 e^2 \left (1+c^2 x^2\right ) \left (d+e x^2\right )^{3/2}} \, dx \\ & = \frac {d (a+b \arctan (c x))}{3 e^2 \left (d+e x^2\right )^{3/2}}-\frac {a+b \arctan (c x)}{e^2 \sqrt {d+e x^2}}-\frac {(b c) \int \frac {-2 d-3 e x^2}{\left (1+c^2 x^2\right ) \left (d+e x^2\right )^{3/2}} \, dx}{3 e^2} \\ & = \frac {b c x}{3 \left (c^2 d-e\right ) e \sqrt {d+e x^2}}+\frac {d (a+b \arctan (c x))}{3 e^2 \left (d+e x^2\right )^{3/2}}-\frac {a+b \arctan (c x)}{e^2 \sqrt {d+e x^2}}+\frac {(b c) \int \frac {d \left (2 c^2 d-3 e\right )}{\left (1+c^2 x^2\right ) \sqrt {d+e x^2}} \, dx}{3 d \left (c^2 d-e\right ) e^2} \\ & = \frac {b c x}{3 \left (c^2 d-e\right ) e \sqrt {d+e x^2}}+\frac {d (a+b \arctan (c x))}{3 e^2 \left (d+e x^2\right )^{3/2}}-\frac {a+b \arctan (c x)}{e^2 \sqrt {d+e x^2}}+\frac {\left (b c \left (2 c^2 d-3 e\right )\right ) \int \frac {1}{\left (1+c^2 x^2\right ) \sqrt {d+e x^2}} \, dx}{3 \left (c^2 d-e\right ) e^2} \\ & = \frac {b c x}{3 \left (c^2 d-e\right ) e \sqrt {d+e x^2}}+\frac {d (a+b \arctan (c x))}{3 e^2 \left (d+e x^2\right )^{3/2}}-\frac {a+b \arctan (c x)}{e^2 \sqrt {d+e x^2}}+\frac {\left (b c \left (2 c^2 d-3 e\right )\right ) \text {Subst}\left (\int \frac {1}{1-\left (-c^2 d+e\right ) x^2} \, dx,x,\frac {x}{\sqrt {d+e x^2}}\right )}{3 \left (c^2 d-e\right ) e^2} \\ & = \frac {b c x}{3 \left (c^2 d-e\right ) e \sqrt {d+e x^2}}+\frac {d (a+b \arctan (c x))}{3 e^2 \left (d+e x^2\right )^{3/2}}-\frac {a+b \arctan (c x)}{e^2 \sqrt {d+e x^2}}+\frac {b c \left (2 c^2 d-3 e\right ) \arctan \left (\frac {\sqrt {c^2 d-e} x}{\sqrt {d+e x^2}}\right )}{3 \left (c^2 d-e\right )^{3/2} e^2} \\ \end{align*}
Result contains complex when optimal does not.
Time = 0.49 (sec) , antiderivative size = 326, normalized size of antiderivative = 2.28 \[ \int \frac {x^3 (a+b \arctan (c x))}{\left (d+e x^2\right )^{5/2}} \, dx=\frac {2 \sqrt {c^2 d-e} \left (b c e x \left (d+e x^2\right )-a \left (c^2 d-e\right ) \left (2 d+3 e x^2\right )\right )-2 b \left (c^2 d-e\right )^{3/2} \left (2 d+3 e x^2\right ) \arctan (c x)-i b c \left (2 c^2 d-3 e\right ) \left (d+e x^2\right )^{3/2} \log \left (-\frac {12 i \sqrt {c^2 d-e} e^2 \left (c d-i e x+\sqrt {c^2 d-e} \sqrt {d+e x^2}\right )}{b \left (2 c^2 d-3 e\right ) (i+c x)}\right )+i b c \left (2 c^2 d-3 e\right ) \left (d+e x^2\right )^{3/2} \log \left (\frac {12 i \sqrt {c^2 d-e} e^2 \left (c d+i e x+\sqrt {c^2 d-e} \sqrt {d+e x^2}\right )}{b \left (2 c^2 d-3 e\right ) (-i+c x)}\right )}{6 \left (c^2 d-e\right )^{3/2} e^2 \left (d+e x^2\right )^{3/2}} \]
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\[\int \frac {x^{3} \left (a +b \arctan \left (c x \right )\right )}{\left (e \,x^{2}+d \right )^{\frac {5}{2}}}d x\]
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Leaf count of result is larger than twice the leaf count of optimal. 415 vs. \(2 (125) = 250\).
Time = 0.60 (sec) , antiderivative size = 863, normalized size of antiderivative = 6.03 \[ \int \frac {x^3 (a+b \arctan (c x))}{\left (d+e x^2\right )^{5/2}} \, dx=\left [-\frac {{\left (2 \, b c^{3} d^{3} - 3 \, b c d^{2} e + {\left (2 \, b c^{3} d e^{2} - 3 \, b c e^{3}\right )} x^{4} + 2 \, {\left (2 \, b c^{3} d^{2} e - 3 \, b c d e^{2}\right )} x^{2}\right )} \sqrt {-c^{2} d + e} \log \left (\frac {{\left (c^{4} d^{2} - 8 \, c^{2} d e + 8 \, e^{2}\right )} x^{4} - 2 \, {\left (3 \, c^{2} d^{2} - 4 \, d e\right )} x^{2} - 4 \, {\left ({\left (c^{2} d - 2 \, e\right )} x^{3} - d x\right )} \sqrt {-c^{2} d + e} \sqrt {e x^{2} + d} + d^{2}}{c^{4} x^{4} + 2 \, c^{2} x^{2} + 1}\right ) + 4 \, {\left (2 \, a c^{4} d^{3} - 4 \, a c^{2} d^{2} e + 2 \, a d e^{2} - {\left (b c^{3} d e^{2} - b c e^{3}\right )} x^{3} + 3 \, {\left (a c^{4} d^{2} e - 2 \, a c^{2} d e^{2} + a e^{3}\right )} x^{2} - {\left (b c^{3} d^{2} e - b c d e^{2}\right )} x + {\left (2 \, b c^{4} d^{3} - 4 \, b c^{2} d^{2} e + 2 \, b d e^{2} + 3 \, {\left (b c^{4} d^{2} e - 2 \, b c^{2} d e^{2} + b e^{3}\right )} x^{2}\right )} \arctan \left (c x\right )\right )} \sqrt {e x^{2} + d}}{12 \, {\left (c^{4} d^{4} e^{2} - 2 \, c^{2} d^{3} e^{3} + d^{2} e^{4} + {\left (c^{4} d^{2} e^{4} - 2 \, c^{2} d e^{5} + e^{6}\right )} x^{4} + 2 \, {\left (c^{4} d^{3} e^{3} - 2 \, c^{2} d^{2} e^{4} + d e^{5}\right )} x^{2}\right )}}, \frac {{\left (2 \, b c^{3} d^{3} - 3 \, b c d^{2} e + {\left (2 \, b c^{3} d e^{2} - 3 \, b c e^{3}\right )} x^{4} + 2 \, {\left (2 \, b c^{3} d^{2} e - 3 \, b c d e^{2}\right )} x^{2}\right )} \sqrt {c^{2} d - e} \arctan \left (\frac {\sqrt {c^{2} d - e} {\left ({\left (c^{2} d - 2 \, e\right )} x^{2} - d\right )} \sqrt {e x^{2} + d}}{2 \, {\left ({\left (c^{2} d e - e^{2}\right )} x^{3} + {\left (c^{2} d^{2} - d e\right )} x\right )}}\right ) - 2 \, {\left (2 \, a c^{4} d^{3} - 4 \, a c^{2} d^{2} e + 2 \, a d e^{2} - {\left (b c^{3} d e^{2} - b c e^{3}\right )} x^{3} + 3 \, {\left (a c^{4} d^{2} e - 2 \, a c^{2} d e^{2} + a e^{3}\right )} x^{2} - {\left (b c^{3} d^{2} e - b c d e^{2}\right )} x + {\left (2 \, b c^{4} d^{3} - 4 \, b c^{2} d^{2} e + 2 \, b d e^{2} + 3 \, {\left (b c^{4} d^{2} e - 2 \, b c^{2} d e^{2} + b e^{3}\right )} x^{2}\right )} \arctan \left (c x\right )\right )} \sqrt {e x^{2} + d}}{6 \, {\left (c^{4} d^{4} e^{2} - 2 \, c^{2} d^{3} e^{3} + d^{2} e^{4} + {\left (c^{4} d^{2} e^{4} - 2 \, c^{2} d e^{5} + e^{6}\right )} x^{4} + 2 \, {\left (c^{4} d^{3} e^{3} - 2 \, c^{2} d^{2} e^{4} + d e^{5}\right )} x^{2}\right )}}\right ] \]
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\[ \int \frac {x^3 (a+b \arctan (c x))}{\left (d+e x^2\right )^{5/2}} \, dx=\int \frac {x^{3} \left (a + b \operatorname {atan}{\left (c x \right )}\right )}{\left (d + e x^{2}\right )^{\frac {5}{2}}}\, dx \]
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Exception generated. \[ \int \frac {x^3 (a+b \arctan (c x))}{\left (d+e x^2\right )^{5/2}} \, dx=\text {Exception raised: ValueError} \]
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\[ \int \frac {x^3 (a+b \arctan (c x))}{\left (d+e x^2\right )^{5/2}} \, dx=\int { \frac {{\left (b \arctan \left (c x\right ) + a\right )} x^{3}}{{\left (e x^{2} + d\right )}^{\frac {5}{2}}} \,d x } \]
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Timed out. \[ \int \frac {x^3 (a+b \arctan (c x))}{\left (d+e x^2\right )^{5/2}} \, dx=\int \frac {x^3\,\left (a+b\,\mathrm {atan}\left (c\,x\right )\right )}{{\left (e\,x^2+d\right )}^{5/2}} \,d x \]
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