Optimal. Leaf size=38 \[ \frac {2 \tan ^{-1}\left (\frac {\sqrt {b} x}{\sqrt {-b x^2+a x^{2-n}}}\right )}{\sqrt {b} n} \]
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Rubi [A]
time = 0.02, antiderivative size = 38, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.150, Rules used = {2004, 2033,
209} \begin {gather*} \frac {2 \text {ArcTan}\left (\frac {\sqrt {b} x}{\sqrt {a x^{2-n}-b x^2}}\right )}{\sqrt {b} n} \end {gather*}
Antiderivative was successfully verified.
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Rule 209
Rule 2004
Rule 2033
Rubi steps
\begin {align*} \int \frac {1}{\sqrt {x^{2-n} \left (a-b x^n\right )}} \, dx &=\int \frac {1}{\sqrt {-b x^2+a x^{2-n}}} \, dx\\ &=\frac {2 \text {Subst}\left (\int \frac {1}{1+b x^2} \, dx,x,\frac {x}{\sqrt {-b x^2+a x^{2-n}}}\right )}{n}\\ &=\frac {2 \tan ^{-1}\left (\frac {\sqrt {b} x}{\sqrt {-b x^2+a x^{2-n}}}\right )}{\sqrt {b} n}\\ \end {align*}
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Mathematica [B] Leaf count is larger than twice the leaf count of optimal. \(78\) vs. \(2(38)=76\).
time = 0.06, size = 78, normalized size = 2.05 \begin {gather*} \frac {2 \sqrt {a} x^{1-\frac {n}{2}} \sqrt {1-\frac {b x^n}{a}} \sin ^{-1}\left (\frac {\sqrt {b} x^{n/2}}{\sqrt {a}}\right )}{\sqrt {b} n \sqrt {x^{2-n} \left (a-b x^n\right )}} \end {gather*}
Antiderivative was successfully verified.
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Maple [F]
time = 0.08, size = 0, normalized size = 0.00 \[\int \frac {1}{\sqrt {x^{2-n} \left (a -b \,x^{n}\right )}}\, dx\]
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 = 1.92, size = 106, normalized size = 2.79 \begin {gather*} \left [-\frac {\sqrt {-b} \log \left (-\frac {2 \, b x x^{n} - a x - 2 \, \sqrt {-b} x^{n} \sqrt {-\frac {b x^{2} x^{n} - a x^{2}}{x^{n}}}}{x}\right )}{b n}, -\frac {2 \, \arctan \left (\frac {\sqrt {-\frac {b x^{2} x^{n} - a x^{2}}{x^{n}}}}{\sqrt {b} x}\right )}{\sqrt {b} n}\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 {1}{\sqrt {x^{2 - n} \left (a - b x^{n}\right )}}\, 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 [F]
time = 0.00, size = -1, normalized size = -0.03 \begin {gather*} \int \frac {1}{\sqrt {x^{2-n}\,\left (a-b\,x^n\right )}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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