Integrand size = 24, antiderivative size = 180 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^3} \, dx=-\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}+\frac {3}{2 a^4 c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)}-\frac {3}{2 a^4 c^2 \sqrt {c+a^2 c x^2} \arctan (a x)}-\frac {3 \sqrt {1+a^2 x^2} \text {Si}(\arctan (a x))}{8 a^4 c^2 \sqrt {c+a^2 c x^2}}+\frac {9 \sqrt {1+a^2 x^2} \text {Si}(3 \arctan (a x))}{8 a^4 c^2 \sqrt {c+a^2 c x^2}} \]
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Time = 0.50 (sec) , antiderivative size = 180, normalized size of antiderivative = 1.00, number of steps used = 13, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.292, Rules used = {5062, 5084, 5022, 5091, 5090, 3380, 4491} \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^3} \, dx=-\frac {x^3}{2 a c \arctan (a x)^2 \left (a^2 c x^2+c\right )^{3/2}}-\frac {3 \sqrt {a^2 x^2+1} \text {Si}(\arctan (a x))}{8 a^4 c^2 \sqrt {a^2 c x^2+c}}+\frac {9 \sqrt {a^2 x^2+1} \text {Si}(3 \arctan (a x))}{8 a^4 c^2 \sqrt {a^2 c x^2+c}}-\frac {3}{2 a^4 c^2 \arctan (a x) \sqrt {a^2 c x^2+c}}+\frac {3}{2 a^4 c \arctan (a x) \left (a^2 c x^2+c\right )^{3/2}} \]
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Rule 3380
Rule 4491
Rule 5022
Rule 5062
Rule 5084
Rule 5090
Rule 5091
Rubi steps \begin{align*} \text {integral}& = -\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}+\frac {3 \int \frac {x^2}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^2} \, dx}{2 a} \\ & = -\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}-\frac {3 \int \frac {1}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^2} \, dx}{2 a^3}+\frac {3 \int \frac {1}{\left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2} \, dx}{2 a^3 c} \\ & = -\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}+\frac {3}{2 a^4 c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)}-\frac {3}{2 a^4 c^2 \sqrt {c+a^2 c x^2} \arctan (a x)}+\frac {9 \int \frac {x}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)} \, dx}{2 a^2}-\frac {3 \int \frac {x}{\left (c+a^2 c x^2\right )^{3/2} \arctan (a x)} \, dx}{2 a^2 c} \\ & = -\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}+\frac {3}{2 a^4 c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)}-\frac {3}{2 a^4 c^2 \sqrt {c+a^2 c x^2} \arctan (a x)}-\frac {\left (3 \sqrt {1+a^2 x^2}\right ) \int \frac {x}{\left (1+a^2 x^2\right )^{3/2} \arctan (a x)} \, dx}{2 a^2 c^2 \sqrt {c+a^2 c x^2}}+\frac {\left (9 \sqrt {1+a^2 x^2}\right ) \int \frac {x}{\left (1+a^2 x^2\right )^{5/2} \arctan (a x)} \, dx}{2 a^2 c^2 \sqrt {c+a^2 c x^2}} \\ & = -\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}+\frac {3}{2 a^4 c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)}-\frac {3}{2 a^4 c^2 \sqrt {c+a^2 c x^2} \arctan (a x)}-\frac {\left (3 \sqrt {1+a^2 x^2}\right ) \text {Subst}\left (\int \frac {\sin (x)}{x} \, dx,x,\arctan (a x)\right )}{2 a^4 c^2 \sqrt {c+a^2 c x^2}}+\frac {\left (9 \sqrt {1+a^2 x^2}\right ) \text {Subst}\left (\int \frac {\cos ^2(x) \sin (x)}{x} \, dx,x,\arctan (a x)\right )}{2 a^4 c^2 \sqrt {c+a^2 c x^2}} \\ & = -\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}+\frac {3}{2 a^4 c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)}-\frac {3}{2 a^4 c^2 \sqrt {c+a^2 c x^2} \arctan (a x)}-\frac {3 \sqrt {1+a^2 x^2} \text {Si}(\arctan (a x))}{2 a^4 c^2 \sqrt {c+a^2 c x^2}}+\frac {\left (9 \sqrt {1+a^2 x^2}\right ) \text {Subst}\left (\int \left (\frac {\sin (x)}{4 x}+\frac {\sin (3 x)}{4 x}\right ) \, dx,x,\arctan (a x)\right )}{2 a^4 c^2 \sqrt {c+a^2 c x^2}} \\ & = -\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}+\frac {3}{2 a^4 c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)}-\frac {3}{2 a^4 c^2 \sqrt {c+a^2 c x^2} \arctan (a x)}-\frac {3 \sqrt {1+a^2 x^2} \text {Si}(\arctan (a x))}{2 a^4 c^2 \sqrt {c+a^2 c x^2}}+\frac {\left (9 \sqrt {1+a^2 x^2}\right ) \text {Subst}\left (\int \frac {\sin (x)}{x} \, dx,x,\arctan (a x)\right )}{8 a^4 c^2 \sqrt {c+a^2 c x^2}}+\frac {\left (9 \sqrt {1+a^2 x^2}\right ) \text {Subst}\left (\int \frac {\sin (3 x)}{x} \, dx,x,\arctan (a x)\right )}{8 a^4 c^2 \sqrt {c+a^2 c x^2}} \\ & = -\frac {x^3}{2 a c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)^2}+\frac {3}{2 a^4 c \left (c+a^2 c x^2\right )^{3/2} \arctan (a x)}-\frac {3}{2 a^4 c^2 \sqrt {c+a^2 c x^2} \arctan (a x)}-\frac {3 \sqrt {1+a^2 x^2} \text {Si}(\arctan (a x))}{8 a^4 c^2 \sqrt {c+a^2 c x^2}}+\frac {9 \sqrt {1+a^2 x^2} \text {Si}(3 \arctan (a x))}{8 a^4 c^2 \sqrt {c+a^2 c x^2}} \\ \end{align*}
Time = 0.42 (sec) , antiderivative size = 114, normalized size of antiderivative = 0.63 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^3} \, dx=\frac {-4 a^2 x^2 (a x+3 \arctan (a x))-3 \left (1+a^2 x^2\right )^{3/2} \arctan (a x)^2 \text {Si}(\arctan (a x))+9 \left (1+a^2 x^2\right )^{3/2} \arctan (a x)^2 \text {Si}(3 \arctan (a x))}{8 a^4 c^2 \left (1+a^2 x^2\right ) \sqrt {c+a^2 c x^2} \arctan (a x)^2} \]
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Result contains complex when optimal does not.
Time = 24.65 (sec) , antiderivative size = 359, normalized size of antiderivative = 1.99
method | result | size |
default | \(-\frac {i \left (9 \arctan \left (a x \right )^{2} \operatorname {Ei}_{1}\left (3 i \arctan \left (a x \right )\right ) a^{4} x^{4}-3 \arctan \left (a x \right )^{2} \operatorname {Ei}_{1}\left (i \arctan \left (a x \right )\right ) a^{4} x^{4}+3 \arctan \left (a x \right )^{2} \operatorname {Ei}_{1}\left (-i \arctan \left (a x \right )\right ) a^{4} x^{4}-9 \arctan \left (a x \right )^{2} \operatorname {Ei}_{1}\left (-3 i \arctan \left (a x \right )\right ) a^{4} x^{4}+18 \arctan \left (a x \right )^{2} \operatorname {Ei}_{1}\left (3 i \arctan \left (a x \right )\right ) a^{2} x^{2}-6 \arctan \left (a x \right )^{2} \operatorname {Ei}_{1}\left (i \arctan \left (a x \right )\right ) a^{2} x^{2}+6 \arctan \left (a x \right )^{2} \operatorname {Ei}_{1}\left (-i \arctan \left (a x \right )\right ) a^{2} x^{2}-18 \arctan \left (a x \right )^{2} \operatorname {Ei}_{1}\left (-3 i \arctan \left (a x \right )\right ) a^{2} x^{2}-8 i \sqrt {a^{2} x^{2}+1}\, a^{3} x^{3}-24 i \arctan \left (a x \right ) \sqrt {a^{2} x^{2}+1}\, a^{2} x^{2}+9 \,\operatorname {Ei}_{1}\left (3 i \arctan \left (a x \right )\right ) \arctan \left (a x \right )^{2}-3 \,\operatorname {Ei}_{1}\left (i \arctan \left (a x \right )\right ) \arctan \left (a x \right )^{2}+3 \,\operatorname {Ei}_{1}\left (-i \arctan \left (a x \right )\right ) \arctan \left (a x \right )^{2}-9 \,\operatorname {Ei}_{1}\left (-3 i \arctan \left (a x \right )\right ) \arctan \left (a x \right )^{2}\right ) \sqrt {c \left (a x -i\right ) \left (a x +i\right )}}{16 \sqrt {a^{2} x^{2}+1}\, \arctan \left (a x \right )^{2} a^{4} c^{3} \left (a^{4} x^{4}+2 a^{2} x^{2}+1\right )}\) | \(359\) |
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\[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^3} \, dx=\int { \frac {x^{3}}{{\left (a^{2} c x^{2} + c\right )}^{\frac {5}{2}} \arctan \left (a x\right )^{3}} \,d x } \]
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\[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^3} \, dx=\int \frac {x^{3}}{\left (c \left (a^{2} x^{2} + 1\right )\right )^{\frac {5}{2}} \operatorname {atan}^{3}{\left (a x \right )}}\, dx \]
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\[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^3} \, dx=\int { \frac {x^{3}}{{\left (a^{2} c x^{2} + c\right )}^{\frac {5}{2}} \arctan \left (a x\right )^{3}} \,d x } \]
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Exception generated. \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^3} \, dx=\text {Exception raised: TypeError} \]
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Timed out. \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^{5/2} \arctan (a x)^3} \, dx=\int \frac {x^3}{{\mathrm {atan}\left (a\,x\right )}^3\,{\left (c\,a^2\,x^2+c\right )}^{5/2}} \,d x \]
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