Optimal. Leaf size=101 \[ \frac {e \sqrt {\pi } \text {erf}\left (1-i \sin ^{-1}(a x)\right )}{16 a^4}-\frac {e^4 \sqrt {\pi } \text {erf}\left (2-i \sin ^{-1}(a x)\right )}{32 a^4}+\frac {e \sqrt {\pi } \text {erf}\left (1+i \sin ^{-1}(a x)\right )}{16 a^4}-\frac {e^4 \sqrt {\pi } \text {erf}\left (2+i \sin ^{-1}(a x)\right )}{32 a^4} \]
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Rubi [A] time = 0.12, antiderivative size = 101, normalized size of antiderivative = 1.00, number of steps used = 12, number of rules used = 5, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.417, Rules used = {4836, 12, 4474, 2234, 2204} \[ \frac {e \sqrt {\pi } \text {Erf}\left (1-i \sin ^{-1}(a x)\right )}{16 a^4}-\frac {e^4 \sqrt {\pi } \text {Erf}\left (2-i \sin ^{-1}(a x)\right )}{32 a^4}+\frac {e \sqrt {\pi } \text {Erf}\left (1+i \sin ^{-1}(a x)\right )}{16 a^4}-\frac {e^4 \sqrt {\pi } \text {Erf}\left (2+i \sin ^{-1}(a x)\right )}{32 a^4} \]
Antiderivative was successfully verified.
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Rule 12
Rule 2204
Rule 2234
Rule 4474
Rule 4836
Rubi steps
\begin {align*} \int e^{\sin ^{-1}(a x)^2} x^3 \, dx &=\frac {\operatorname {Subst}\left (\int \frac {e^{x^2} \cos (x) \sin ^3(x)}{a^3} \, dx,x,\sin ^{-1}(a x)\right )}{a}\\ &=\frac {\operatorname {Subst}\left (\int e^{x^2} \cos (x) \sin ^3(x) \, dx,x,\sin ^{-1}(a x)\right )}{a^4}\\ &=\frac {\operatorname {Subst}\left (\int \left (\frac {1}{8} i e^{-2 i x+x^2}-\frac {1}{8} i e^{2 i x+x^2}-\frac {1}{16} i e^{-4 i x+x^2}+\frac {1}{16} i e^{4 i x+x^2}\right ) \, dx,x,\sin ^{-1}(a x)\right )}{a^4}\\ &=-\frac {i \operatorname {Subst}\left (\int e^{-4 i x+x^2} \, dx,x,\sin ^{-1}(a x)\right )}{16 a^4}+\frac {i \operatorname {Subst}\left (\int e^{4 i x+x^2} \, dx,x,\sin ^{-1}(a x)\right )}{16 a^4}+\frac {i \operatorname {Subst}\left (\int e^{-2 i x+x^2} \, dx,x,\sin ^{-1}(a x)\right )}{8 a^4}-\frac {i \operatorname {Subst}\left (\int e^{2 i x+x^2} \, dx,x,\sin ^{-1}(a x)\right )}{8 a^4}\\ &=\frac {(i e) \operatorname {Subst}\left (\int e^{\frac {1}{4} (-2 i+2 x)^2} \, dx,x,\sin ^{-1}(a x)\right )}{8 a^4}-\frac {(i e) \operatorname {Subst}\left (\int e^{\frac {1}{4} (2 i+2 x)^2} \, dx,x,\sin ^{-1}(a x)\right )}{8 a^4}-\frac {\left (i e^4\right ) \operatorname {Subst}\left (\int e^{\frac {1}{4} (-4 i+2 x)^2} \, dx,x,\sin ^{-1}(a x)\right )}{16 a^4}+\frac {\left (i e^4\right ) \operatorname {Subst}\left (\int e^{\frac {1}{4} (4 i+2 x)^2} \, dx,x,\sin ^{-1}(a x)\right )}{16 a^4}\\ &=\frac {e \sqrt {\pi } \text {erf}\left (1-i \sin ^{-1}(a x)\right )}{16 a^4}-\frac {e^4 \sqrt {\pi } \text {erf}\left (2-i \sin ^{-1}(a x)\right )}{32 a^4}+\frac {e \sqrt {\pi } \text {erf}\left (1+i \sin ^{-1}(a x)\right )}{16 a^4}-\frac {e^4 \sqrt {\pi } \text {erf}\left (2+i \sin ^{-1}(a x)\right )}{32 a^4}\\ \end {align*}
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Mathematica [A] time = 0.15, size = 67, normalized size = 0.66 \[ \frac {e \sqrt {\pi } \left (2 \left (\text {erf}\left (1-i \sin ^{-1}(a x)\right )+\text {erf}\left (1+i \sin ^{-1}(a x)\right )\right )-e^3 \left (\text {erf}\left (2-i \sin ^{-1}(a x)\right )+\text {erf}\left (2+i \sin ^{-1}(a x)\right )\right )\right )}{32 a^4} \]
Antiderivative was successfully verified.
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fricas [F] time = 0.48, size = 0, normalized size = 0.00 \[ {\rm integral}\left (x^{3} e^{\left (\arcsin \left (a x\right )^{2}\right )}, x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int x^{3} e^{\left (\arcsin \left (a x\right )^{2}\right )}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [F] time = 0.01, size = 0, normalized size = 0.00 \[ \int {\mathrm e}^{\arcsin \left (a x \right )^{2}} x^{3}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int x^{3} e^{\left (\arcsin \left (a x\right )^{2}\right )}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int x^3\,{\mathrm {e}}^{{\mathrm {asin}\left (a\,x\right )}^2} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int x^{3} e^{\operatorname {asin}^{2}{\left (a x \right )}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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