Optimal. Leaf size=63 \[ \frac {2 x \sqrt {b x^{n-2}-\frac {a}{x^2}}}{n}+\frac {2 \sqrt {a} \tan ^{-1}\left (\frac {\sqrt {a}}{x \sqrt {b x^{n-2}-\frac {a}{x^2}}}\right )}{n} \]
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Rubi [A] time = 0.08, antiderivative size = 63, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 17, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.235, Rules used = {1979, 2007, 2029, 203} \[ \frac {2 x \sqrt {b x^{n-2}-\frac {a}{x^2}}}{n}+\frac {2 \sqrt {a} \tan ^{-1}\left (\frac {\sqrt {a}}{x \sqrt {b x^{n-2}-\frac {a}{x^2}}}\right )}{n} \]
Antiderivative was successfully verified.
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Rule 203
Rule 1979
Rule 2007
Rule 2029
Rubi steps
\begin {align*} \int \sqrt {\frac {-a+b x^n}{x^2}} \, dx &=\int \sqrt {-\frac {a}{x^2}+b x^{-2+n}} \, dx\\ &=\frac {2 x \sqrt {-\frac {a}{x^2}+b x^{-2+n}}}{n}-a \int \frac {1}{x^2 \sqrt {-\frac {a}{x^2}+b x^{-2+n}}} \, dx\\ &=\frac {2 x \sqrt {-\frac {a}{x^2}+b x^{-2+n}}}{n}+\frac {(2 a) \operatorname {Subst}\left (\int \frac {1}{1+a x^2} \, dx,x,\frac {1}{x \sqrt {-\frac {a}{x^2}+b x^{-2+n}}}\right )}{n}\\ &=\frac {2 x \sqrt {-\frac {a}{x^2}+b x^{-2+n}}}{n}+\frac {2 \sqrt {a} \tan ^{-1}\left (\frac {\sqrt {a}}{x \sqrt {-\frac {a}{x^2}+b x^{-2+n}}}\right )}{n}\\ \end {align*}
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Mathematica [A] time = 0.03, size = 78, normalized size = 1.24 \[ \frac {x \sqrt {\frac {b x^n-a}{x^2}} \left (2 \sqrt {b x^n-a}-2 \sqrt {a} \tan ^{-1}\left (\frac {\sqrt {b x^n-a}}{\sqrt {a}}\right )\right )}{n \sqrt {b x^n-a}} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.42, size = 118, normalized size = 1.87 \[ \left [\frac {2 \, x \sqrt {\frac {b x^{n} - a}{x^{2}}} + \sqrt {-a} \log \left (\frac {b x^{n} - 2 \, \sqrt {-a} x \sqrt {\frac {b x^{n} - a}{x^{2}}} - 2 \, a}{x^{n}}\right )}{n}, \frac {2 \, {\left (x \sqrt {\frac {b x^{n} - a}{x^{2}}} - \sqrt {a} \arctan \left (\frac {x \sqrt {\frac {b x^{n} - a}{x^{2}}}}{\sqrt {a}}\right )\right )}}{n}\right ] \]
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 \[ \int \sqrt {\frac {b x^{n} - a}{x^{2}}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 1.99, size = 105, normalized size = 1.67 \[ -\frac {2 \sqrt {\frac {b \,{\mathrm e}^{n \ln \relax (x )}-a}{x^{2}}}\, \sqrt {a}\, x \arctan \left (\frac {\sqrt {b \,{\mathrm e}^{n \ln \relax (x )}-a}}{\sqrt {a}}\right )}{\sqrt {b \,{\mathrm e}^{n \ln \relax (x )}-a}\, n}-\frac {2 \left (-b \,{\mathrm e}^{n \ln \relax (x )}+a \right ) \sqrt {\frac {b \,{\mathrm e}^{n \ln \relax (x )}-a}{x^{2}}}\, x}{\left (b \,{\mathrm e}^{n \ln \relax (x )}-a \right ) n} \]
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 \[ \int \sqrt {\frac {b x^{n} - a}{x^{2}}}\,{d x} \]
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 \[ \int \sqrt {-\frac {a-b\,x^n}{x^2}} \,d x \]
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 \[ \int \sqrt {\frac {- a + b x^{n}}{x^{2}}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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