Optimal. Leaf size=94 \[ \frac {2 a \tan ^{-1}\left (\frac {a \tan \left (\frac {1}{2} \left (c+d x^3\right )\right )+b}{\sqrt {a^2-b^2}}\right )}{3 d \left (a^2-b^2\right )^{3/2}}+\frac {b \cos \left (c+d x^3\right )}{3 d \left (a^2-b^2\right ) \left (a+b \sin \left (c+d x^3\right )\right )} \]
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Rubi [A] time = 0.11, antiderivative size = 94, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {3379, 2664, 12, 2660, 618, 204} \[ \frac {2 a \tan ^{-1}\left (\frac {a \tan \left (\frac {1}{2} \left (c+d x^3\right )\right )+b}{\sqrt {a^2-b^2}}\right )}{3 d \left (a^2-b^2\right )^{3/2}}+\frac {b \cos \left (c+d x^3\right )}{3 d \left (a^2-b^2\right ) \left (a+b \sin \left (c+d x^3\right )\right )} \]
Antiderivative was successfully verified.
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Rule 12
Rule 204
Rule 618
Rule 2660
Rule 2664
Rule 3379
Rubi steps
\begin {align*} \int \frac {x^2}{\left (a+b \sin \left (c+d x^3\right )\right )^2} \, dx &=\frac {1}{3} \operatorname {Subst}\left (\int \frac {1}{(a+b \sin (c+d x))^2} \, dx,x,x^3\right )\\ &=\frac {b \cos \left (c+d x^3\right )}{3 \left (a^2-b^2\right ) d \left (a+b \sin \left (c+d x^3\right )\right )}+\frac {\operatorname {Subst}\left (\int \frac {a}{a+b \sin (c+d x)} \, dx,x,x^3\right )}{3 \left (a^2-b^2\right )}\\ &=\frac {b \cos \left (c+d x^3\right )}{3 \left (a^2-b^2\right ) d \left (a+b \sin \left (c+d x^3\right )\right )}+\frac {a \operatorname {Subst}\left (\int \frac {1}{a+b \sin (c+d x)} \, dx,x,x^3\right )}{3 \left (a^2-b^2\right )}\\ &=\frac {b \cos \left (c+d x^3\right )}{3 \left (a^2-b^2\right ) d \left (a+b \sin \left (c+d x^3\right )\right )}+\frac {(2 a) \operatorname {Subst}\left (\int \frac {1}{a+2 b x+a x^2} \, dx,x,\tan \left (\frac {1}{2} \left (c+d x^3\right )\right )\right )}{3 \left (a^2-b^2\right ) d}\\ &=\frac {b \cos \left (c+d x^3\right )}{3 \left (a^2-b^2\right ) d \left (a+b \sin \left (c+d x^3\right )\right )}-\frac {(4 a) \operatorname {Subst}\left (\int \frac {1}{-4 \left (a^2-b^2\right )-x^2} \, dx,x,2 b+2 a \tan \left (\frac {1}{2} \left (c+d x^3\right )\right )\right )}{3 \left (a^2-b^2\right ) d}\\ &=\frac {2 a \tan ^{-1}\left (\frac {b+a \tan \left (\frac {1}{2} \left (c+d x^3\right )\right )}{\sqrt {a^2-b^2}}\right )}{3 \left (a^2-b^2\right )^{3/2} d}+\frac {b \cos \left (c+d x^3\right )}{3 \left (a^2-b^2\right ) d \left (a+b \sin \left (c+d x^3\right )\right )}\\ \end {align*}
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Mathematica [A] time = 0.21, size = 91, normalized size = 0.97 \[ \frac {\frac {2 a \tan ^{-1}\left (\frac {a \tan \left (\frac {1}{2} \left (c+d x^3\right )\right )+b}{\sqrt {a^2-b^2}}\right )}{\sqrt {a^2-b^2}}+\frac {b \cos \left (c+d x^3\right )}{a+b \sin \left (c+d x^3\right )}}{3 d (a-b) (a+b)} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.62, size = 366, normalized size = 3.89 \[ \left [\frac {{\left (a b \sin \left (d x^{3} + c\right ) + a^{2}\right )} \sqrt {-a^{2} + b^{2}} \log \left (-\frac {{\left (2 \, a^{2} - b^{2}\right )} \cos \left (d x^{3} + c\right )^{2} - 2 \, a b \sin \left (d x^{3} + c\right ) - a^{2} - b^{2} - 2 \, {\left (a \cos \left (d x^{3} + c\right ) \sin \left (d x^{3} + c\right ) + b \cos \left (d x^{3} + c\right )\right )} \sqrt {-a^{2} + b^{2}}}{b^{2} \cos \left (d x^{3} + c\right )^{2} - 2 \, a b \sin \left (d x^{3} + c\right ) - a^{2} - b^{2}}\right ) + 2 \, {\left (a^{2} b - b^{3}\right )} \cos \left (d x^{3} + c\right )}{6 \, {\left ({\left (a^{4} b - 2 \, a^{2} b^{3} + b^{5}\right )} d \sin \left (d x^{3} + c\right ) + {\left (a^{5} - 2 \, a^{3} b^{2} + a b^{4}\right )} d\right )}}, -\frac {{\left (a b \sin \left (d x^{3} + c\right ) + a^{2}\right )} \sqrt {a^{2} - b^{2}} \arctan \left (-\frac {a \sin \left (d x^{3} + c\right ) + b}{\sqrt {a^{2} - b^{2}} \cos \left (d x^{3} + c\right )}\right ) - {\left (a^{2} b - b^{3}\right )} \cos \left (d x^{3} + c\right )}{3 \, {\left ({\left (a^{4} b - 2 \, a^{2} b^{3} + b^{5}\right )} d \sin \left (d x^{3} + c\right ) + {\left (a^{5} - 2 \, a^{3} b^{2} + a b^{4}\right )} d\right )}}\right ] \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 1.89, size = 146, normalized size = 1.55 \[ \frac {2 \, {\left (\pi \left \lfloor \frac {d x^{3} + c}{2 \, \pi } + \frac {1}{2} \right \rfloor \mathrm {sgn}\relax (a) + \arctan \left (\frac {a \tan \left (\frac {1}{2} \, d x^{3} + \frac {1}{2} \, c\right ) + b}{\sqrt {a^{2} - b^{2}}}\right )\right )} a}{3 \, {\left (a^{2} d - b^{2} d\right )} \sqrt {a^{2} - b^{2}}} + \frac {2 \, {\left (b^{2} \tan \left (\frac {1}{2} \, d x^{3} + \frac {1}{2} \, c\right ) + a b\right )}}{3 \, {\left (a^{3} d - a b^{2} d\right )} {\left (a \tan \left (\frac {1}{2} \, d x^{3} + \frac {1}{2} \, c\right )^{2} + 2 \, b \tan \left (\frac {1}{2} \, d x^{3} + \frac {1}{2} \, c\right ) + a\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.10, size = 167, normalized size = 1.78 \[ \frac {2 b^{2} \tan \left (\frac {d \,x^{3}}{2}+\frac {c}{2}\right )}{3 d \left (a \left (\tan ^{2}\left (\frac {d \,x^{3}}{2}+\frac {c}{2}\right )\right )+2 \tan \left (\frac {d \,x^{3}}{2}+\frac {c}{2}\right ) b +a \right ) a \left (a^{2}-b^{2}\right )}+\frac {2 b}{3 d \left (a \left (\tan ^{2}\left (\frac {d \,x^{3}}{2}+\frac {c}{2}\right )\right )+2 \tan \left (\frac {d \,x^{3}}{2}+\frac {c}{2}\right ) b +a \right ) \left (a^{2}-b^{2}\right )}+\frac {2 a \arctan \left (\frac {2 a \tan \left (\frac {d \,x^{3}}{2}+\frac {c}{2}\right )+2 b}{2 \sqrt {a^{2}-b^{2}}}\right )}{3 d \left (a^{2}-b^{2}\right )^{\frac {3}{2}}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 4.95, size = 186, normalized size = 1.98 \[ \frac {\frac {2\,b}{a^2-b^2}+\frac {2\,b^2\,\mathrm {tan}\left (\frac {d\,x^3}{2}+\frac {c}{2}\right )}{a\,\left (a^2-b^2\right )}}{d\,\left (3\,a\,{\mathrm {tan}\left (\frac {d\,x^3}{2}+\frac {c}{2}\right )}^2+6\,b\,\mathrm {tan}\left (\frac {d\,x^3}{2}+\frac {c}{2}\right )+3\,a\right )}+\frac {2\,a\,\mathrm {atan}\left (\frac {3\,\left (a^2-b^2\right )\,\left (\frac {2\,a^2\,\mathrm {tan}\left (\frac {d\,x^3}{2}+\frac {c}{2}\right )}{3\,{\left (a+b\right )}^{3/2}\,{\left (a-b\right )}^{3/2}}+\frac {2\,a\,\left (3\,a^2\,b-3\,b^3\right )}{9\,{\left (a+b\right )}^{3/2}\,\left (a^2-b^2\right )\,{\left (a-b\right )}^{3/2}}\right )}{2\,a}\right )}{3\,d\,{\left (a+b\right )}^{3/2}\,{\left (a-b\right )}^{3/2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
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