Optimal. Leaf size=126 \[ -\frac{\sqrt{\pi } a \sqrt{a^2-x^2} S\left (\frac{2 \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}}{\sqrt{\pi }}\right )}{8 \sqrt{1-\frac{x^2}{a^2}}}+\frac{a \sqrt{a^2-x^2} \sin ^{-1}\left (\frac{x}{a}\right )^{3/2}}{3 \sqrt{1-\frac{x^2}{a^2}}}+\frac{1}{2} x \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )} \]
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Rubi [A] time = 0.105709, antiderivative size = 126, normalized size of antiderivative = 1., number of steps used = 7, number of rules used = 7, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.292, Rules used = {4647, 4641, 4635, 4406, 12, 3305, 3351} \[ -\frac{\sqrt{\pi } a \sqrt{a^2-x^2} S\left (\frac{2 \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}}{\sqrt{\pi }}\right )}{8 \sqrt{1-\frac{x^2}{a^2}}}+\frac{a \sqrt{a^2-x^2} \sin ^{-1}\left (\frac{x}{a}\right )^{3/2}}{3 \sqrt{1-\frac{x^2}{a^2}}}+\frac{1}{2} x \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )} \]
Antiderivative was successfully verified.
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Rule 4647
Rule 4641
Rule 4635
Rule 4406
Rule 12
Rule 3305
Rule 3351
Rubi steps
\begin{align*} \int \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )} \, dx &=\frac{1}{2} x \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}+\frac{\sqrt{a^2-x^2} \int \frac{\sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}}{\sqrt{1-\frac{x^2}{a^2}}} \, dx}{2 \sqrt{1-\frac{x^2}{a^2}}}-\frac{\sqrt{a^2-x^2} \int \frac{x}{\sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}} \, dx}{4 a \sqrt{1-\frac{x^2}{a^2}}}\\ &=\frac{1}{2} x \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}+\frac{a \sqrt{a^2-x^2} \sin ^{-1}\left (\frac{x}{a}\right )^{3/2}}{3 \sqrt{1-\frac{x^2}{a^2}}}-\frac{\left (a \sqrt{a^2-x^2}\right ) \operatorname{Subst}\left (\int \frac{\cos (x) \sin (x)}{\sqrt{x}} \, dx,x,\sin ^{-1}\left (\frac{x}{a}\right )\right )}{4 \sqrt{1-\frac{x^2}{a^2}}}\\ &=\frac{1}{2} x \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}+\frac{a \sqrt{a^2-x^2} \sin ^{-1}\left (\frac{x}{a}\right )^{3/2}}{3 \sqrt{1-\frac{x^2}{a^2}}}-\frac{\left (a \sqrt{a^2-x^2}\right ) \operatorname{Subst}\left (\int \frac{\sin (2 x)}{2 \sqrt{x}} \, dx,x,\sin ^{-1}\left (\frac{x}{a}\right )\right )}{4 \sqrt{1-\frac{x^2}{a^2}}}\\ &=\frac{1}{2} x \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}+\frac{a \sqrt{a^2-x^2} \sin ^{-1}\left (\frac{x}{a}\right )^{3/2}}{3 \sqrt{1-\frac{x^2}{a^2}}}-\frac{\left (a \sqrt{a^2-x^2}\right ) \operatorname{Subst}\left (\int \frac{\sin (2 x)}{\sqrt{x}} \, dx,x,\sin ^{-1}\left (\frac{x}{a}\right )\right )}{8 \sqrt{1-\frac{x^2}{a^2}}}\\ &=\frac{1}{2} x \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}+\frac{a \sqrt{a^2-x^2} \sin ^{-1}\left (\frac{x}{a}\right )^{3/2}}{3 \sqrt{1-\frac{x^2}{a^2}}}-\frac{\left (a \sqrt{a^2-x^2}\right ) \operatorname{Subst}\left (\int \sin \left (2 x^2\right ) \, dx,x,\sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}\right )}{4 \sqrt{1-\frac{x^2}{a^2}}}\\ &=\frac{1}{2} x \sqrt{a^2-x^2} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}+\frac{a \sqrt{a^2-x^2} \sin ^{-1}\left (\frac{x}{a}\right )^{3/2}}{3 \sqrt{1-\frac{x^2}{a^2}}}-\frac{a \sqrt{\pi } \sqrt{a^2-x^2} S\left (\frac{2 \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}}{\sqrt{\pi }}\right )}{8 \sqrt{1-\frac{x^2}{a^2}}}\\ \end{align*}
Mathematica [C] time = 0.0719123, size = 148, normalized size = 1.17 \[ \frac{\sqrt{a^2-x^2} \left (3 \sqrt{2} a \sqrt{-i \sin ^{-1}\left (\frac{x}{a}\right )} \text{Gamma}\left (\frac{1}{2},-2 i \sin ^{-1}\left (\frac{x}{a}\right )\right )+3 \sqrt{2} a \sqrt{i \sin ^{-1}\left (\frac{x}{a}\right )} \text{Gamma}\left (\frac{1}{2},2 i \sin ^{-1}\left (\frac{x}{a}\right )\right )+48 x \sqrt{1-\frac{x^2}{a^2}} \sin ^{-1}\left (\frac{x}{a}\right )+32 a \sin ^{-1}\left (\frac{x}{a}\right )^2\right )}{96 \sqrt{1-\frac{x^2}{a^2}} \sqrt{\sin ^{-1}\left (\frac{x}{a}\right )}} \]
Warning: Unable to verify antiderivative.
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Maple [F] time = 0.267, size = 0, normalized size = 0. \begin{align*} \int \sqrt{{a}^{2}-{x}^{2}}\sqrt{\arcsin \left ({\frac{x}{a}} \right ) }\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \sqrt{a^{2} - x^{2}} \sqrt{\arcsin \left (\frac{x}{a}\right )}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: UnboundLocalError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \sqrt{- \left (- a + x\right ) \left (a + x\right )} \sqrt{\operatorname{asin}{\left (\frac{x}{a} \right )}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \sqrt{a^{2} - x^{2}} \sqrt{\arcsin \left (\frac{x}{a}\right )}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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