Optimal. Leaf size=34 \[ \frac {\sqrt {1-a^2 x^2}}{a^2 (a x+1)}+\frac {\sin ^{-1}(a x)}{a^2} \]
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Rubi [A] time = 0.02, antiderivative size = 34, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 23, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.087, Rules used = {793, 216} \[ \frac {\sqrt {1-a^2 x^2}}{a^2 (a x+1)}+\frac {\sin ^{-1}(a x)}{a^2} \]
Antiderivative was successfully verified.
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Rule 216
Rule 793
Rubi steps
\begin {align*} \int \frac {x}{(1+a x) \sqrt {1-a^2 x^2}} \, dx &=\frac {\sqrt {1-a^2 x^2}}{a^2 (1+a x)}+\frac {\int \frac {1}{\sqrt {1-a^2 x^2}} \, dx}{a}\\ &=\frac {\sqrt {1-a^2 x^2}}{a^2 (1+a x)}+\frac {\sin ^{-1}(a x)}{a^2}\\ \end {align*}
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Mathematica [A] time = 0.02, size = 31, normalized size = 0.91 \[ \frac {\frac {\sqrt {1-a^2 x^2}}{a x+1}+\sin ^{-1}(a x)}{a^2} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.88, size = 58, normalized size = 1.71 \[ \frac {a x - 2 \, {\left (a x + 1\right )} \arctan \left (\frac {\sqrt {-a^{2} x^{2} + 1} - 1}{a x}\right ) + \sqrt {-a^{2} x^{2} + 1} + 1}{a^{3} x + a^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.22, size = 52, normalized size = 1.53 \[ \frac {\arcsin \left (a x\right ) \mathrm {sgn}\relax (a)}{a {\left | a \right |}} - \frac {2}{a {\left (\frac {\sqrt {-a^{2} x^{2} + 1} {\left | a \right |} + a}{a^{2} x} + 1\right )} {\left | a \right |}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 65, normalized size = 1.91 \[ \frac {\arctan \left (\frac {\sqrt {a^{2}}\, x}{\sqrt {-a^{2} x^{2}+1}}\right )}{\sqrt {a^{2}}\, a}+\frac {\sqrt {-\left (x +\frac {1}{a}\right )^{2} a^{2}+2 \left (x +\frac {1}{a}\right ) a}}{\left (x +\frac {1}{a}\right ) a^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.99, size = 33, normalized size = 0.97 \[ \frac {\sqrt {-a^{2} x^{2} + 1}}{a^{3} x + a^{2}} + \frac {\arcsin \left (a x\right )}{a^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 2.60, size = 57, normalized size = 1.68 \[ \frac {1}{a^2\,\sqrt {1-a^2\,x^2}}-\frac {x}{a\,\sqrt {1-a^2\,x^2}}-\frac {\mathrm {asinh}\left (x\,\sqrt {-a^2}\right )\,\sqrt {-a^2}}{a^3} \]
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 \[ \int \frac {x}{\sqrt {- \left (a x - 1\right ) \left (a x + 1\right )} \left (a x + 1\right )}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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