Optimal. Leaf size=158 \[ \frac {3}{8} b \text {RootSum}\left [2 \text {$\#$1}^8-4 \text {$\#$1}^4 a+2 a^2-a b\& ,\frac {\text {$\#$1} \log \left (\sqrt [4]{a x^4+b x^2}-\text {$\#$1} x\right )-\text {$\#$1} \log (x)}{\text {$\#$1}^4-a}\& \right ]-\frac {b \tan ^{-1}\left (\frac {\sqrt [4]{a} x}{\sqrt [4]{a x^4+b x^2}}\right )}{2 a^{3/4}}+\frac {b \tanh ^{-1}\left (\frac {\sqrt [4]{a} x}{\sqrt [4]{a x^4+b x^2}}\right )}{2 a^{3/4}}+x \sqrt [4]{a x^4+b x^2} \]
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Rubi [A] time = 0.99, antiderivative size = 293, normalized size of antiderivative = 1.85, number of steps used = 16, number of rules used = 12, integrand size = 37, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.324, Rules used = {2056, 6725, 279, 329, 331, 298, 203, 206, 1270, 1529, 511, 510} \begin {gather*} -\frac {b \sqrt [4]{a x^4+b x^2} \tan ^{-1}\left (\frac {\sqrt [4]{a} \sqrt {x}}{\sqrt [4]{a x^2+b}}\right )}{2 a^{3/4} \sqrt {x} \sqrt [4]{a x^2+b}}+\frac {b \sqrt [4]{a x^4+b x^2} \tanh ^{-1}\left (\frac {\sqrt [4]{a} \sqrt {x}}{\sqrt [4]{a x^2+b}}\right )}{2 a^{3/4} \sqrt {x} \sqrt [4]{a x^2+b}}-\frac {x \sqrt [4]{a x^4+b x^2} F_1\left (\frac {3}{4};1,-\frac {1}{4};\frac {7}{4};-\frac {\sqrt {a} x^2}{\sqrt {2} \sqrt {b}},-\frac {a x^2}{b}\right )}{2 \sqrt [4]{\frac {a x^2}{b}+1}}-\frac {x \sqrt [4]{a x^4+b x^2} F_1\left (\frac {3}{4};1,-\frac {1}{4};\frac {7}{4};\frac {\sqrt {a} x^2}{\sqrt {2} \sqrt {b}},-\frac {a x^2}{b}\right )}{2 \sqrt [4]{\frac {a x^2}{b}+1}}+x \sqrt [4]{a x^4+b x^2} \end {gather*}
Warning: Unable to verify antiderivative.
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Rule 203
Rule 206
Rule 279
Rule 298
Rule 329
Rule 331
Rule 510
Rule 511
Rule 1270
Rule 1529
Rule 2056
Rule 6725
Rubi steps
\begin {align*} \int \frac {\sqrt [4]{b x^2+a x^4} \left (-b+2 a x^4\right )}{-2 b+a x^4} \, dx &=\frac {\sqrt [4]{b x^2+a x^4} \int \frac {\sqrt {x} \sqrt [4]{b+a x^2} \left (-b+2 a x^4\right )}{-2 b+a x^4} \, dx}{\sqrt {x} \sqrt [4]{b+a x^2}}\\ &=\frac {\sqrt [4]{b x^2+a x^4} \int \left (2 \sqrt {x} \sqrt [4]{b+a x^2}+\frac {3 b \sqrt {x} \sqrt [4]{b+a x^2}}{-2 b+a x^4}\right ) \, dx}{\sqrt {x} \sqrt [4]{b+a x^2}}\\ &=\frac {\left (2 \sqrt [4]{b x^2+a x^4}\right ) \int \sqrt {x} \sqrt [4]{b+a x^2} \, dx}{\sqrt {x} \sqrt [4]{b+a x^2}}+\frac {\left (3 b \sqrt [4]{b x^2+a x^4}\right ) \int \frac {\sqrt {x} \sqrt [4]{b+a x^2}}{-2 b+a x^4} \, dx}{\sqrt {x} \sqrt [4]{b+a x^2}}\\ &=x \sqrt [4]{b x^2+a x^4}+\frac {\left (b \sqrt [4]{b x^2+a x^4}\right ) \int \frac {\sqrt {x}}{\left (b+a x^2\right )^{3/4}} \, dx}{2 \sqrt {x} \sqrt [4]{b+a x^2}}+\frac {\left (6 b \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {x^2 \sqrt [4]{b+a x^4}}{-2 b+a x^8} \, dx,x,\sqrt {x}\right )}{\sqrt {x} \sqrt [4]{b+a x^2}}\\ &=x \sqrt [4]{b x^2+a x^4}+\frac {\left (b \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {x^2}{\left (b+a x^4\right )^{3/4}} \, dx,x,\sqrt {x}\right )}{\sqrt {x} \sqrt [4]{b+a x^2}}+\frac {\left (6 b \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \left (-\frac {\sqrt {a} x^2 \sqrt [4]{b+a x^4}}{2 \sqrt {2} \sqrt {b} \left (\sqrt {2} \sqrt {a} \sqrt {b}-a x^4\right )}-\frac {\sqrt {a} x^2 \sqrt [4]{b+a x^4}}{2 \sqrt {2} \sqrt {b} \left (\sqrt {2} \sqrt {a} \sqrt {b}+a x^4\right )}\right ) \, dx,x,\sqrt {x}\right )}{\sqrt {x} \sqrt [4]{b+a x^2}}\\ &=x \sqrt [4]{b x^2+a x^4}-\frac {\left (3 \sqrt {a} \sqrt {b} \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {x^2 \sqrt [4]{b+a x^4}}{\sqrt {2} \sqrt {a} \sqrt {b}-a x^4} \, dx,x,\sqrt {x}\right )}{\sqrt {2} \sqrt {x} \sqrt [4]{b+a x^2}}-\frac {\left (3 \sqrt {a} \sqrt {b} \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {x^2 \sqrt [4]{b+a x^4}}{\sqrt {2} \sqrt {a} \sqrt {b}+a x^4} \, dx,x,\sqrt {x}\right )}{\sqrt {2} \sqrt {x} \sqrt [4]{b+a x^2}}+\frac {\left (b \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {x^2}{1-a x^4} \, dx,x,\frac {\sqrt {x}}{\sqrt [4]{b+a x^2}}\right )}{\sqrt {x} \sqrt [4]{b+a x^2}}\\ &=x \sqrt [4]{b x^2+a x^4}+\frac {\left (b \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {1}{1-\sqrt {a} x^2} \, dx,x,\frac {\sqrt {x}}{\sqrt [4]{b+a x^2}}\right )}{2 \sqrt {a} \sqrt {x} \sqrt [4]{b+a x^2}}-\frac {\left (b \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {1}{1+\sqrt {a} x^2} \, dx,x,\frac {\sqrt {x}}{\sqrt [4]{b+a x^2}}\right )}{2 \sqrt {a} \sqrt {x} \sqrt [4]{b+a x^2}}-\frac {\left (3 \sqrt {a} \sqrt {b} \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {x^2 \sqrt [4]{1+\frac {a x^4}{b}}}{\sqrt {2} \sqrt {a} \sqrt {b}-a x^4} \, dx,x,\sqrt {x}\right )}{\sqrt {2} \sqrt {x} \sqrt [4]{1+\frac {a x^2}{b}}}-\frac {\left (3 \sqrt {a} \sqrt {b} \sqrt [4]{b x^2+a x^4}\right ) \operatorname {Subst}\left (\int \frac {x^2 \sqrt [4]{1+\frac {a x^4}{b}}}{\sqrt {2} \sqrt {a} \sqrt {b}+a x^4} \, dx,x,\sqrt {x}\right )}{\sqrt {2} \sqrt {x} \sqrt [4]{1+\frac {a x^2}{b}}}\\ &=x \sqrt [4]{b x^2+a x^4}-\frac {x \sqrt [4]{b x^2+a x^4} F_1\left (\frac {3}{4};1,-\frac {1}{4};\frac {7}{4};-\frac {\sqrt {a} x^2}{\sqrt {2} \sqrt {b}},-\frac {a x^2}{b}\right )}{2 \sqrt [4]{1+\frac {a x^2}{b}}}-\frac {x \sqrt [4]{b x^2+a x^4} F_1\left (\frac {3}{4};1,-\frac {1}{4};\frac {7}{4};\frac {\sqrt {a} x^2}{\sqrt {2} \sqrt {b}},-\frac {a x^2}{b}\right )}{2 \sqrt [4]{1+\frac {a x^2}{b}}}-\frac {b \sqrt [4]{b x^2+a x^4} \tan ^{-1}\left (\frac {\sqrt [4]{a} \sqrt {x}}{\sqrt [4]{b+a x^2}}\right )}{2 a^{3/4} \sqrt {x} \sqrt [4]{b+a x^2}}+\frac {b \sqrt [4]{b x^2+a x^4} \tanh ^{-1}\left (\frac {\sqrt [4]{a} \sqrt {x}}{\sqrt [4]{b+a x^2}}\right )}{2 a^{3/4} \sqrt {x} \sqrt [4]{b+a x^2}}\\ \end {align*}
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Mathematica [B] time = 2.01, size = 394, normalized size = 2.49 \begin {gather*} \frac {\sqrt {b} x^3 \left (a+\frac {b}{x^2}\right )^{3/4} \left (3 a^{3/8} \sqrt [4]{4 \sqrt {a}-2 \sqrt {2} \sqrt {b}} \tan ^{-1}\left (\frac {\sqrt [4]{a+\frac {b}{x^2}}}{\sqrt [8]{a} \sqrt [4]{\sqrt {a}-\frac {\sqrt {b}}{\sqrt {2}}}}\right )-3 a^{3/8} \sqrt [4]{4 \sqrt {a}+2 \sqrt {2} \sqrt {b}} \tan ^{-1}\left (\frac {\sqrt [4]{a+\frac {b}{x^2}}}{\sqrt [8]{a} \sqrt [4]{\sqrt {a}+\frac {\sqrt {b}}{\sqrt {2}}}}\right )+3 a^{3/8} \sqrt [4]{4 \sqrt {a}-2 \sqrt {2} \sqrt {b}} \tanh ^{-1}\left (\frac {\sqrt [4]{a+\frac {b}{x^2}}}{\sqrt [8]{a} \sqrt [4]{\sqrt {a}-\frac {\sqrt {b}}{\sqrt {2}}}}\right )-3 a^{3/8} \sqrt [4]{4 \sqrt {a}+2 \sqrt {2} \sqrt {b}} \tanh ^{-1}\left (\frac {\sqrt [4]{a+\frac {b}{x^2}}}{\sqrt [8]{a} \sqrt [4]{\sqrt {a}+\frac {\sqrt {b}}{\sqrt {2}}}}\right )+2 \sqrt {b} \tan ^{-1}\left (\frac {\sqrt [4]{a+\frac {b}{x^2}}}{\sqrt [4]{a}}\right )+2 \sqrt {b} \tanh ^{-1}\left (\frac {\sqrt [4]{a+\frac {b}{x^2}}}{\sqrt [4]{a}}\right )\right )}{4 a^{3/4} \left (x^2 \left (a x^2+b\right )\right )^{3/4}}+x \sqrt [4]{x^2 \left (a x^2+b\right )} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [A] time = 0.00, size = 158, normalized size = 1.00 \begin {gather*} x \sqrt [4]{b x^2+a x^4}-\frac {b \tan ^{-1}\left (\frac {\sqrt [4]{a} x}{\sqrt [4]{b x^2+a x^4}}\right )}{2 a^{3/4}}+\frac {b \tanh ^{-1}\left (\frac {\sqrt [4]{a} x}{\sqrt [4]{b x^2+a x^4}}\right )}{2 a^{3/4}}+\frac {3}{8} b \text {RootSum}\left [2 a^2-a b-4 a \text {$\#$1}^4+2 \text {$\#$1}^8\&,\frac {-\log (x) \text {$\#$1}+\log \left (\sqrt [4]{b x^2+a x^4}-x \text {$\#$1}\right ) \text {$\#$1}}{-a+\text {$\#$1}^4}\&\right ] \end {gather*}
Antiderivative was successfully verified.
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fricas [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Timed out} \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*} \int \frac {{\left (2 \, a x^{4} - b\right )} {\left (a x^{4} + b x^{2}\right )}^{\frac {1}{4}}}{a x^{4} - 2 \, b}\,{d x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [F] time = 0.00, size = 0, normalized size = 0.00 \[\int \frac {\left (a \,x^{4}+b \,x^{2}\right )^{\frac {1}{4}} \left (2 a \,x^{4}-b \right )}{a \,x^{4}-2 b}\, dx\]
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*} \int \frac {{\left (2 \, a x^{4} - b\right )} {\left (a x^{4} + b x^{2}\right )}^{\frac {1}{4}}}{a x^{4} - 2 \, b}\,{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 \frac {\left (b-2\,a\,x^4\right )\,{\left (a\,x^4+b\,x^2\right )}^{1/4}}{2\,b-a\,x^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 \frac {\sqrt [4]{x^{2} \left (a x^{2} + b\right )} \left (2 a x^{4} - b\right )}{a x^{4} - 2 b}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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