Optimal. Leaf size=95 \[ -\frac {\sin ^{-1}(a x)}{a^3}-\frac {3 \left (1-a^2 x^2\right )^{3/2}}{5 a^3 (1-a x)^3}+\frac {\left (1-a^2 x^2\right )^{3/2}}{5 a^3 (1-a x)^4}+\frac {2 \sqrt {1-a^2 x^2}}{a^3 (1-a x)} \]
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Rubi [A] time = 0.13, antiderivative size = 95, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 5, integrand size = 26, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.192, Rules used = {1637, 659, 651, 663, 216} \[ -\frac {3 \left (1-a^2 x^2\right )^{3/2}}{5 a^3 (1-a x)^3}+\frac {\left (1-a^2 x^2\right )^{3/2}}{5 a^3 (1-a x)^4}+\frac {2 \sqrt {1-a^2 x^2}}{a^3 (1-a x)}-\frac {\sin ^{-1}(a x)}{a^3} \]
Antiderivative was successfully verified.
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Rule 216
Rule 651
Rule 659
Rule 663
Rule 1637
Rubi steps
\begin {align*} \int \frac {x^2 \sqrt {1-a^2 x^2}}{(1-a x)^4} \, dx &=\int \left (\frac {\sqrt {1-a^2 x^2}}{a^2 (-1+a x)^4}+\frac {2 \sqrt {1-a^2 x^2}}{a^2 (-1+a x)^3}+\frac {\sqrt {1-a^2 x^2}}{a^2 (-1+a x)^2}\right ) \, dx\\ &=\frac {\int \frac {\sqrt {1-a^2 x^2}}{(-1+a x)^4} \, dx}{a^2}+\frac {\int \frac {\sqrt {1-a^2 x^2}}{(-1+a x)^2} \, dx}{a^2}+\frac {2 \int \frac {\sqrt {1-a^2 x^2}}{(-1+a x)^3} \, dx}{a^2}\\ &=\frac {2 \sqrt {1-a^2 x^2}}{a^3 (1-a x)}+\frac {\left (1-a^2 x^2\right )^{3/2}}{5 a^3 (1-a x)^4}-\frac {2 \left (1-a^2 x^2\right )^{3/2}}{3 a^3 (1-a x)^3}-\frac {\int \frac {\sqrt {1-a^2 x^2}}{(-1+a x)^3} \, dx}{5 a^2}-\frac {\int \frac {1}{\sqrt {1-a^2 x^2}} \, dx}{a^2}\\ &=\frac {2 \sqrt {1-a^2 x^2}}{a^3 (1-a x)}+\frac {\left (1-a^2 x^2\right )^{3/2}}{5 a^3 (1-a x)^4}-\frac {3 \left (1-a^2 x^2\right )^{3/2}}{5 a^3 (1-a x)^3}-\frac {\sin ^{-1}(a x)}{a^3}\\ \end {align*}
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Mathematica [A] time = 0.11, size = 50, normalized size = 0.53 \[ \frac {\frac {\left (-13 a^2 x^2+19 a x-8\right ) \sqrt {1-a^2 x^2}}{(a x-1)^3}-5 \sin ^{-1}(a x)}{5 a^3} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.96, size = 126, normalized size = 1.33 \[ \frac {8 \, a^{3} x^{3} - 24 \, a^{2} x^{2} + 24 \, a x + 10 \, {\left (a^{3} x^{3} - 3 \, a^{2} x^{2} + 3 \, a x - 1\right )} \arctan \left (\frac {\sqrt {-a^{2} x^{2} + 1} - 1}{a x}\right ) - {\left (13 \, a^{2} x^{2} - 19 \, a x + 8\right )} \sqrt {-a^{2} x^{2} + 1} - 8}{5 \, {\left (a^{6} x^{3} - 3 \, a^{5} x^{2} + 3 \, a^{4} x - a^{3}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: TypeError} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.02, size = 200, normalized size = 2.11 \[ -\frac {\arctan \left (\frac {\sqrt {a^{2}}\, x}{\sqrt {-\left (x -\frac {1}{a}\right )^{2} a^{2}-2 \left (x -\frac {1}{a}\right ) a}}\right )}{\sqrt {a^{2}}\, a^{2}}+\frac {\sqrt {-\left (x -\frac {1}{a}\right )^{2} a^{2}-2 \left (x -\frac {1}{a}\right ) a}}{a^{3}}+\frac {\left (-\left (x -\frac {1}{a}\right )^{2} a^{2}-2 \left (x -\frac {1}{a}\right ) a \right )^{\frac {3}{2}}}{\left (x -\frac {1}{a}\right )^{2} a^{5}}+\frac {3 \left (-\left (x -\frac {1}{a}\right )^{2} a^{2}-2 \left (x -\frac {1}{a}\right ) a \right )^{\frac {3}{2}}}{5 \left (x -\frac {1}{a}\right )^{3} a^{6}}+\frac {\left (-\left (x -\frac {1}{a}\right )^{2} a^{2}-2 \left (x -\frac {1}{a}\right ) a \right )^{\frac {3}{2}}}{5 \left (x -\frac {1}{a}\right )^{4} a^{7}} \]
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 \[ \int \frac {\sqrt {-a^{2} x^{2} + 1} x^{2}}{{\left (a x - 1\right )}^{4}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 2.70, size = 220, normalized size = 2.32 \[ \frac {4\,a^2\,\sqrt {1-a^2\,x^2}}{15\,\left (a^7\,x^2-2\,a^6\,x+a^5\right )}-\frac {\mathrm {asinh}\left (x\,\sqrt {-a^2}\right )}{a^2\,\sqrt {-a^2}}-\frac {2\,\sqrt {1-a^2\,x^2}}{5\,\sqrt {-a^2}\,\left (a\,\sqrt {-a^2}-3\,a^2\,x\,\sqrt {-a^2}+3\,a^3\,x^2\,\sqrt {-a^2}-a^4\,x^3\,\sqrt {-a^2}\right )}-\frac {13\,\sqrt {1-a^2\,x^2}}{5\,\left (a\,\sqrt {-a^2}-a^2\,x\,\sqrt {-a^2}\right )\,\sqrt {-a^2}}-\frac {5\,\sqrt {1-a^2\,x^2}}{3\,\left (a^5\,x^2-2\,a^4\,x+a^3\right )} \]
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 \[ \int \frac {x^{2} \sqrt {- \left (a x - 1\right ) \left (a x + 1\right )}}{\left (a x - 1\right )^{4}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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