Optimal. Leaf size=44 \[ \frac {\sqrt {a x^4} \sqrt {1+x^2}}{2 x}-\frac {\sqrt {a x^4} \sinh ^{-1}(x)}{2 x^2} \]
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Rubi [A]
time = 0.00, antiderivative size = 44, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 19, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.158, Rules used = {15, 327, 221}
\begin {gather*} \frac {\sqrt {x^2+1} \sqrt {a x^4}}{2 x}-\frac {\sqrt {a x^4} \sinh ^{-1}(x)}{2 x^2} \end {gather*}
Antiderivative was successfully verified.
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Rule 15
Rule 221
Rule 327
Rubi steps
\begin {align*} \int \frac {\sqrt {a x^4}}{\sqrt {1+x^2}} \, dx &=\frac {\sqrt {a x^4} \int \frac {x^2}{\sqrt {1+x^2}} \, dx}{x^2}\\ &=\frac {\sqrt {a x^4} \sqrt {1+x^2}}{2 x}-\frac {\sqrt {a x^4} \int \frac {1}{\sqrt {1+x^2}} \, dx}{2 x^2}\\ &=\frac {\sqrt {a x^4} \sqrt {1+x^2}}{2 x}-\frac {\sqrt {a x^4} \sinh ^{-1}(x)}{2 x^2}\\ \end {align*}
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Mathematica [A]
time = 0.03, size = 42, normalized size = 0.95 \begin {gather*} \frac {\sqrt {a x^4} \left (x \sqrt {1+x^2}-\tanh ^{-1}\left (\frac {x}{\sqrt {1+x^2}}\right )\right )}{2 x^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.20, size = 27, normalized size = 0.61
method | result | size |
default | \(\frac {\sqrt {a \,x^{4}}\, \left (x \sqrt {x^{2}+1}-\arcsinh \left (x \right )\right )}{2 x^{2}}\) | \(27\) |
meijerg | \(\frac {\sqrt {a \,x^{4}}\, \left (\sqrt {\pi }\, x \sqrt {x^{2}+1}-\sqrt {\pi }\, \arcsinh \left (x \right )\right )}{2 x^{2} \sqrt {\pi }}\) | \(36\) |
risch | \(\frac {\sqrt {a \,x^{4}}\, \sqrt {x^{2}+1}}{2 x}-\frac {\ln \left (x \sqrt {a}+\sqrt {a \,x^{2}+a}\right ) \sqrt {a \,x^{4}}\, \sqrt {\left (x^{2}+1\right ) a}}{2 \sqrt {a}\, x^{2} \sqrt {x^{2}+1}}\) | \(68\) |
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 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.33, size = 42, normalized size = 0.95 \begin {gather*} \frac {\sqrt {a x^{4}} \sqrt {x^{2} + 1} x + \sqrt {a x^{4}} \log \left (-x + \sqrt {x^{2} + 1}\right )}{2 \, x^{2}} \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 {\sqrt {a x^{4}}}{\sqrt {x^{2} + 1}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 3.62, size = 27, normalized size = 0.61 \begin {gather*} \frac {1}{2} \, {\left (\sqrt {x^{2} + 1} x + \log \left (-x + \sqrt {x^{2} + 1}\right )\right )} \sqrt {a} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.02 \begin {gather*} \int \frac {\sqrt {a\,x^4}}{\sqrt {x^2+1}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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