Optimal. Leaf size=71 \[ \frac {\sqrt {c-\frac {c}{a^2 x^2}} x^2}{\sqrt {1-a^2 x^2}}-\frac {a \sqrt {c-\frac {c}{a^2 x^2}} x^3}{2 \sqrt {1-a^2 x^2}} \]
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Rubi [A]
time = 0.10, antiderivative size = 71, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 2, integrand size = 25, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.080, Rules used = {6295, 6275}
\begin {gather*} \frac {x^2 \sqrt {c-\frac {c}{a^2 x^2}}}{\sqrt {1-a^2 x^2}}-\frac {a x^3 \sqrt {c-\frac {c}{a^2 x^2}}}{2 \sqrt {1-a^2 x^2}} \end {gather*}
Antiderivative was successfully verified.
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Rule 6275
Rule 6295
Rubi steps
\begin {align*} \int e^{-\tanh ^{-1}(a x)} \sqrt {c-\frac {c}{a^2 x^2}} x \, dx &=\frac {\left (\sqrt {c-\frac {c}{a^2 x^2}} x\right ) \int e^{-\tanh ^{-1}(a x)} \sqrt {1-a^2 x^2} \, dx}{\sqrt {1-a^2 x^2}}\\ &=\frac {\left (\sqrt {c-\frac {c}{a^2 x^2}} x\right ) \int (1-a x) \, dx}{\sqrt {1-a^2 x^2}}\\ &=\frac {\sqrt {c-\frac {c}{a^2 x^2}} x^2}{\sqrt {1-a^2 x^2}}-\frac {a \sqrt {c-\frac {c}{a^2 x^2}} x^3}{2 \sqrt {1-a^2 x^2}}\\ \end {align*}
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Mathematica [A]
time = 0.01, size = 41, normalized size = 0.58 \begin {gather*} \frac {\sqrt {c-\frac {c}{a^2 x^2}} x \left (x-\frac {a x^2}{2}\right )}{\sqrt {1-a^2 x^2}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.05, size = 53, normalized size = 0.75
method | result | size |
default | \(\frac {\sqrt {\frac {c \left (a^{2} x^{2}-1\right )}{a^{2} x^{2}}}\, x^{2} \sqrt {-a^{2} x^{2}+1}\, \left (a x -2\right )}{2 a^{2} x^{2}-2}\) | \(53\) |
gosper | \(\frac {x^{2} \left (a x -2\right ) \sqrt {\frac {c \left (a^{2} x^{2}-1\right )}{a^{2} x^{2}}}\, \sqrt {-a^{2} x^{2}+1}}{2 \left (a x -1\right ) \left (a x +1\right )}\) | \(56\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [C] Result contains complex when optimal does not.
time = 0.29, size = 51, normalized size = 0.72 \begin {gather*} \frac {{\left (i \, a^{2} \sqrt {c} x^{2} - 2 i \, a \sqrt {c} x + 2 i \, \sqrt {c}\right )} {\left (a x + 1\right )} {\left (a x - 1\right )}}{2 \, {\left (a^{4} x^{2} - a^{2}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.35, size = 57, normalized size = 0.80 \begin {gather*} \frac {\sqrt {-a^{2} x^{2} + 1} {\left (a x^{3} - 2 \, x^{2}\right )} \sqrt {\frac {a^{2} c x^{2} - c}{a^{2} x^{2}}}}{2 \, {\left (a^{2} x^{2} - 1\right )}} \end {gather*}
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 \begin {gather*} \int \frac {x \sqrt {- \left (a x - 1\right ) \left (a x + 1\right )} \sqrt {- c \left (-1 + \frac {1}{a x}\right ) \left (1 + \frac {1}{a x}\right )}}{a x + 1}\, dx \end {gather*}
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 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.93, size = 67, normalized size = 0.94 \begin {gather*} -\frac {\sqrt {c-\frac {c}{a^2\,x^2}}\,\left (\frac {x^3\,\sqrt {1-a^2\,x^2}}{2\,a}-\frac {x^2\,\sqrt {1-a^2\,x^2}}{a^2}\right )}{\frac {1}{a^2}-x^2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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