Optimal. Leaf size=93 \[ \frac {a x^3 \sqrt {a^2+2 a b x^n+b^2 x^{2 n}}}{3 \left (a+b x^n\right )}+\frac {b^2 x^{3+n} \sqrt {a^2+2 a b x^n+b^2 x^{2 n}}}{(3+n) \left (a b+b^2 x^n\right )} \]
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Rubi [A]
time = 0.02, antiderivative size = 93, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 2, integrand size = 28, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.071, Rules used = {1369, 14}
\begin {gather*} \frac {b^2 x^{n+3} \sqrt {a^2+2 a b x^n+b^2 x^{2 n}}}{(n+3) \left (a b+b^2 x^n\right )}+\frac {a x^3 \sqrt {a^2+2 a b x^n+b^2 x^{2 n}}}{3 \left (a+b x^n\right )} \end {gather*}
Antiderivative was successfully verified.
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Rule 14
Rule 1369
Rubi steps
\begin {align*} \int x^2 \sqrt {a^2+2 a b x^n+b^2 x^{2 n}} \, dx &=\frac {\sqrt {a^2+2 a b x^n+b^2 x^{2 n}} \int x^2 \left (a b+b^2 x^n\right ) \, dx}{a b+b^2 x^n}\\ &=\frac {\sqrt {a^2+2 a b x^n+b^2 x^{2 n}} \int \left (a b x^2+b^2 x^{2+n}\right ) \, dx}{a b+b^2 x^n}\\ &=\frac {a x^3 \sqrt {a^2+2 a b x^n+b^2 x^{2 n}}}{3 \left (a+b x^n\right )}+\frac {b^2 x^{3+n} \sqrt {a^2+2 a b x^n+b^2 x^{2 n}}}{(3+n) \left (a b+b^2 x^n\right )}\\ \end {align*}
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Mathematica [A]
time = 0.03, size = 46, normalized size = 0.49 \begin {gather*} \frac {x^3 \sqrt {\left (a+b x^n\right )^2} \left (a (3+n)+3 b x^n\right )}{3 (3+n) \left (a+b x^n\right )} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.04, size = 61, normalized size = 0.66
method | result | size |
risch | \(\frac {\sqrt {\left (a +b \,x^{n}\right )^{2}}\, a \,x^{3}}{3 a +3 b \,x^{n}}+\frac {\sqrt {\left (a +b \,x^{n}\right )^{2}}\, b \,x^{3} x^{n}}{\left (a +b \,x^{n}\right ) \left (3+n \right )}\) | \(61\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.33, size = 25, normalized size = 0.27 \begin {gather*} \frac {3 \, b x^{3} x^{n} + a {\left (n + 3\right )} x^{3}}{3 \, {\left (n + 3\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.37, size = 28, normalized size = 0.30 \begin {gather*} \frac {3 \, b x^{3} x^{n} + {\left (a n + 3 \, a\right )} x^{3}}{3 \, {\left (n + 3\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 x^{2} \sqrt {\left (a + b x^{n}\right )^{2}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 5.89, size = 53, normalized size = 0.57 \begin {gather*} \frac {3 \, b x^{3} x^{n} \mathrm {sgn}\left (b x^{n} + a\right ) + a n x^{3} \mathrm {sgn}\left (b x^{n} + a\right ) + 3 \, a x^{3} \mathrm {sgn}\left (b x^{n} + a\right )}{3 \, {\left (n + 3\right )}} \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 = -0.01 \begin {gather*} \int x^2\,\sqrt {a^2+b^2\,x^{2\,n}+2\,a\,b\,x^n} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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