Optimal. Leaf size=67 \[ \frac {3}{32} \tan ^{-1}\left (\frac {x}{\sqrt [4]{x^4-x^2}}\right )-\frac {3}{32} \tanh ^{-1}\left (\frac {x}{\sqrt [4]{x^4-x^2}}\right )+\frac {1}{16} \sqrt [4]{x^4-x^2} \left (4 x^3-x\right ) \]
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Rubi [A] time = 0.12, antiderivative size = 133, normalized size of antiderivative = 1.99, number of steps used = 8, number of rules used = 8, integrand size = 17, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.471, Rules used = {2021, 2024, 2032, 329, 331, 298, 203, 206} \begin {gather*} -\frac {1}{16} \sqrt [4]{x^4-x^2} x+\frac {3 \left (x^2-1\right )^{3/4} x^{3/2} \tan ^{-1}\left (\frac {\sqrt {x}}{\sqrt [4]{x^2-1}}\right )}{32 \left (x^4-x^2\right )^{3/4}}-\frac {3 \left (x^2-1\right )^{3/4} x^{3/2} \tanh ^{-1}\left (\frac {\sqrt {x}}{\sqrt [4]{x^2-1}}\right )}{32 \left (x^4-x^2\right )^{3/4}}+\frac {1}{4} \sqrt [4]{x^4-x^2} x^3 \end {gather*}
Antiderivative was successfully verified.
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Rule 203
Rule 206
Rule 298
Rule 329
Rule 331
Rule 2021
Rule 2024
Rule 2032
Rubi steps
\begin {align*} \int x^2 \sqrt [4]{-x^2+x^4} \, dx &=\frac {1}{4} x^3 \sqrt [4]{-x^2+x^4}-\frac {1}{8} \int \frac {x^4}{\left (-x^2+x^4\right )^{3/4}} \, dx\\ &=-\frac {1}{16} x \sqrt [4]{-x^2+x^4}+\frac {1}{4} x^3 \sqrt [4]{-x^2+x^4}-\frac {3}{32} \int \frac {x^2}{\left (-x^2+x^4\right )^{3/4}} \, dx\\ &=-\frac {1}{16} x \sqrt [4]{-x^2+x^4}+\frac {1}{4} x^3 \sqrt [4]{-x^2+x^4}-\frac {\left (3 x^{3/2} \left (-1+x^2\right )^{3/4}\right ) \int \frac {\sqrt {x}}{\left (-1+x^2\right )^{3/4}} \, dx}{32 \left (-x^2+x^4\right )^{3/4}}\\ &=-\frac {1}{16} x \sqrt [4]{-x^2+x^4}+\frac {1}{4} x^3 \sqrt [4]{-x^2+x^4}-\frac {\left (3 x^{3/2} \left (-1+x^2\right )^{3/4}\right ) \operatorname {Subst}\left (\int \frac {x^2}{\left (-1+x^4\right )^{3/4}} \, dx,x,\sqrt {x}\right )}{16 \left (-x^2+x^4\right )^{3/4}}\\ &=-\frac {1}{16} x \sqrt [4]{-x^2+x^4}+\frac {1}{4} x^3 \sqrt [4]{-x^2+x^4}-\frac {\left (3 x^{3/2} \left (-1+x^2\right )^{3/4}\right ) \operatorname {Subst}\left (\int \frac {x^2}{1-x^4} \, dx,x,\frac {\sqrt {x}}{\sqrt [4]{-1+x^2}}\right )}{16 \left (-x^2+x^4\right )^{3/4}}\\ &=-\frac {1}{16} x \sqrt [4]{-x^2+x^4}+\frac {1}{4} x^3 \sqrt [4]{-x^2+x^4}-\frac {\left (3 x^{3/2} \left (-1+x^2\right )^{3/4}\right ) \operatorname {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\frac {\sqrt {x}}{\sqrt [4]{-1+x^2}}\right )}{32 \left (-x^2+x^4\right )^{3/4}}+\frac {\left (3 x^{3/2} \left (-1+x^2\right )^{3/4}\right ) \operatorname {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\frac {\sqrt {x}}{\sqrt [4]{-1+x^2}}\right )}{32 \left (-x^2+x^4\right )^{3/4}}\\ &=-\frac {1}{16} x \sqrt [4]{-x^2+x^4}+\frac {1}{4} x^3 \sqrt [4]{-x^2+x^4}+\frac {3 x^{3/2} \left (-1+x^2\right )^{3/4} \tan ^{-1}\left (\frac {\sqrt {x}}{\sqrt [4]{-1+x^2}}\right )}{32 \left (-x^2+x^4\right )^{3/4}}-\frac {3 x^{3/2} \left (-1+x^2\right )^{3/4} \tanh ^{-1}\left (\frac {\sqrt {x}}{\sqrt [4]{-1+x^2}}\right )}{32 \left (-x^2+x^4\right )^{3/4}}\\ \end {align*}
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Mathematica [C] time = 0.02, size = 56, normalized size = 0.84 \begin {gather*} \frac {x \sqrt [4]{x^2 \left (x^2-1\right )} \left (\, _2F_1\left (-\frac {1}{4},\frac {3}{4};\frac {7}{4};x^2\right )-\left (1-x^2\right )^{5/4}\right )}{4 \sqrt [4]{1-x^2}} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [A] time = 0.18, size = 67, normalized size = 1.00 \begin {gather*} \frac {3}{32} \tan ^{-1}\left (\frac {x}{\sqrt [4]{x^4-x^2}}\right )-\frac {3}{32} \tanh ^{-1}\left (\frac {x}{\sqrt [4]{x^4-x^2}}\right )+\frac {1}{16} \sqrt [4]{x^4-x^2} \left (4 x^3-x\right ) \end {gather*}
Antiderivative was successfully verified.
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fricas [B] time = 1.24, size = 118, normalized size = 1.76 \begin {gather*} \frac {1}{16} \, {\left (x^{4} - x^{2}\right )}^{\frac {1}{4}} {\left (4 \, x^{3} - x\right )} - \frac {3}{64} \, \arctan \left (\frac {2 \, {\left ({\left (x^{4} - x^{2}\right )}^{\frac {1}{4}} x^{2} + {\left (x^{4} - x^{2}\right )}^{\frac {3}{4}}\right )}}{x}\right ) + \frac {3}{64} \, \log \left (-\frac {2 \, x^{3} - 2 \, {\left (x^{4} - x^{2}\right )}^{\frac {1}{4}} x^{2} + 2 \, \sqrt {x^{4} - x^{2}} x - x - 2 \, {\left (x^{4} - x^{2}\right )}^{\frac {3}{4}}}{x}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.20, size = 69, normalized size = 1.03 \begin {gather*} -\frac {1}{16} \, {\left ({\left (-\frac {1}{x^{2}} + 1\right )}^{\frac {5}{4}} + 3 \, {\left (-\frac {1}{x^{2}} + 1\right )}^{\frac {1}{4}}\right )} x^{4} + \frac {3}{32} \, \arctan \left ({\left (-\frac {1}{x^{2}} + 1\right )}^{\frac {1}{4}}\right ) + \frac {3}{64} \, \log \left ({\left (-\frac {1}{x^{2}} + 1\right )}^{\frac {1}{4}} + 1\right ) - \frac {3}{64} \, \log \left (-{\left (-\frac {1}{x^{2}} + 1\right )}^{\frac {1}{4}} + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [F(-1)] time = 180.00, size = 0, normalized size = 0.00 \begin {gather*} \int x^{2} \left (x^{4}-x^{2}\right )^{\frac {1}{4}}\, dx \end {gather*}
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*} \int {\left (x^{4} - x^{2}\right )}^{\frac {1}{4}} x^{2}\,{d x} \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\,{\left (x^4-x^2\right )}^{1/4} \,d x \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 [4]{x^{2} \left (x - 1\right ) \left (x + 1\right )}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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