Optimal. Leaf size=359 \[ -\frac {\log \left (-\sqrt {2} \sqrt [4]{a} x \sqrt {\sqrt {a+b}-\sqrt {a}}+\sqrt {a+b}+\sqrt {a} x^2\right )}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a+b}-\sqrt {a}}}+\frac {\log \left (\sqrt {2} \sqrt [4]{a} x \sqrt {\sqrt {a+b}-\sqrt {a}}+\sqrt {a+b}+\sqrt {a} x^2\right )}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a+b}-\sqrt {a}}}-\frac {\tan ^{-1}\left (\frac {\sqrt {\sqrt {a+b}-\sqrt {a}}-\sqrt {2} \sqrt [4]{a} x}{\sqrt {\sqrt {a+b}+\sqrt {a}}}\right )}{2 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a+b}+\sqrt {a}}}+\frac {\tan ^{-1}\left (\frac {\sqrt {\sqrt {a+b}-\sqrt {a}}+\sqrt {2} \sqrt [4]{a} x}{\sqrt {\sqrt {a+b}+\sqrt {a}}}\right )}{2 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a+b}+\sqrt {a}}} \]
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Rubi [A] time = 0.26, antiderivative size = 359, normalized size of antiderivative = 1.00, number of steps used = 9, number of rules used = 5, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.312, Rules used = {1094, 634, 618, 204, 628} \begin {gather*} -\frac {\log \left (-\sqrt {2} \sqrt [4]{a} x \sqrt {\sqrt {a+b}-\sqrt {a}}+\sqrt {a+b}+\sqrt {a} x^2\right )}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a+b}-\sqrt {a}}}+\frac {\log \left (\sqrt {2} \sqrt [4]{a} x \sqrt {\sqrt {a+b}-\sqrt {a}}+\sqrt {a+b}+\sqrt {a} x^2\right )}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a+b}-\sqrt {a}}}-\frac {\tan ^{-1}\left (\frac {\sqrt {\sqrt {a+b}-\sqrt {a}}-\sqrt {2} \sqrt [4]{a} x}{\sqrt {\sqrt {a+b}+\sqrt {a}}}\right )}{2 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a+b}+\sqrt {a}}}+\frac {\tan ^{-1}\left (\frac {\sqrt {\sqrt {a+b}-\sqrt {a}}+\sqrt {2} \sqrt [4]{a} x}{\sqrt {\sqrt {a+b}+\sqrt {a}}}\right )}{2 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a+b}+\sqrt {a}}} \end {gather*}
Antiderivative was successfully verified.
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Rule 204
Rule 618
Rule 628
Rule 634
Rule 1094
Rubi steps
\begin {align*} \int \frac {1}{a+b+2 a x^2+a x^4} \, dx &=\frac {\int \frac {\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}}}{\sqrt [4]{a}}-x}{\frac {\sqrt {a+b}}{\sqrt {a}}-\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}} x}{\sqrt [4]{a}}+x^2} \, dx}{2 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {-\sqrt {a}+\sqrt {a+b}}}+\frac {\int \frac {\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}}}{\sqrt [4]{a}}+x}{\frac {\sqrt {a+b}}{\sqrt {a}}+\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}} x}{\sqrt [4]{a}}+x^2} \, dx}{2 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {-\sqrt {a}+\sqrt {a+b}}}\\ &=\frac {\int \frac {1}{\frac {\sqrt {a+b}}{\sqrt {a}}-\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}} x}{\sqrt [4]{a}}+x^2} \, dx}{4 \sqrt {a} \sqrt {a+b}}+\frac {\int \frac {1}{\frac {\sqrt {a+b}}{\sqrt {a}}+\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}} x}{\sqrt [4]{a}}+x^2} \, dx}{4 \sqrt {a} \sqrt {a+b}}-\frac {\int \frac {-\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}}}{\sqrt [4]{a}}+2 x}{\frac {\sqrt {a+b}}{\sqrt {a}}-\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}} x}{\sqrt [4]{a}}+x^2} \, dx}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {-\sqrt {a}+\sqrt {a+b}}}+\frac {\int \frac {\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}}}{\sqrt [4]{a}}+2 x}{\frac {\sqrt {a+b}}{\sqrt {a}}+\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}} x}{\sqrt [4]{a}}+x^2} \, dx}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {-\sqrt {a}+\sqrt {a+b}}}\\ &=-\frac {\log \left (\sqrt {a+b}-\sqrt {2} \sqrt [4]{a} \sqrt {-\sqrt {a}+\sqrt {a+b}} x+\sqrt {a} x^2\right )}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {-\sqrt {a}+\sqrt {a+b}}}+\frac {\log \left (\sqrt {a+b}+\sqrt {2} \sqrt [4]{a} \sqrt {-\sqrt {a}+\sqrt {a+b}} x+\sqrt {a} x^2\right )}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {-\sqrt {a}+\sqrt {a+b}}}-\frac {\operatorname {Subst}\left (\int \frac {1}{-2 \left (1+\frac {\sqrt {a+b}}{\sqrt {a}}\right )-x^2} \, dx,x,-\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}}}{\sqrt [4]{a}}+2 x\right )}{2 \sqrt {a} \sqrt {a+b}}-\frac {\operatorname {Subst}\left (\int \frac {1}{-2 \left (1+\frac {\sqrt {a+b}}{\sqrt {a}}\right )-x^2} \, dx,x,\frac {\sqrt {2} \sqrt {-\sqrt {a}+\sqrt {a+b}}}{\sqrt [4]{a}}+2 x\right )}{2 \sqrt {a} \sqrt {a+b}}\\ &=-\frac {\tan ^{-1}\left (\frac {\sqrt {-\sqrt {a}+\sqrt {a+b}}-\sqrt {2} \sqrt [4]{a} x}{\sqrt {\sqrt {a}+\sqrt {a+b}}}\right )}{2 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a}+\sqrt {a+b}}}+\frac {\tan ^{-1}\left (\frac {\sqrt {-\sqrt {a}+\sqrt {a+b}}+\sqrt {2} \sqrt [4]{a} x}{\sqrt {\sqrt {a}+\sqrt {a+b}}}\right )}{2 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {\sqrt {a}+\sqrt {a+b}}}-\frac {\log \left (\sqrt {a+b}-\sqrt {2} \sqrt [4]{a} \sqrt {-\sqrt {a}+\sqrt {a+b}} x+\sqrt {a} x^2\right )}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {-\sqrt {a}+\sqrt {a+b}}}+\frac {\log \left (\sqrt {a+b}+\sqrt {2} \sqrt [4]{a} \sqrt {-\sqrt {a}+\sqrt {a+b}} x+\sqrt {a} x^2\right )}{4 \sqrt {2} \sqrt [4]{a} \sqrt {a+b} \sqrt {-\sqrt {a}+\sqrt {a+b}}}\\ \end {align*}
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Mathematica [C] time = 0.07, size = 119, normalized size = 0.33 \begin {gather*} \frac {i \tan ^{-1}\left (\frac {\sqrt {a} x}{\sqrt {a+i \sqrt {a} \sqrt {b}}}\right )}{2 \sqrt {b} \sqrt {a+i \sqrt {a} \sqrt {b}}}-\frac {i \tan ^{-1}\left (\frac {\sqrt {a} x}{\sqrt {a-i \sqrt {a} \sqrt {b}}}\right )}{2 \sqrt {b} \sqrt {a-i \sqrt {a} \sqrt {b}}} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [F] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {1}{a+b+2 a x^2+a x^4} \, dx \end {gather*}
Verification is not applicable to the result.
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fricas [B] time = 1.12, size = 567, normalized size = 1.58 \begin {gather*} \frac {1}{4} \, \sqrt {\frac {{\left (a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} + 1}{a b + b^{2}}} \log \left ({\left ({\left (a^{2} b + a b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} + b\right )} \sqrt {\frac {{\left (a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} + 1}{a b + b^{2}}} + x\right ) - \frac {1}{4} \, \sqrt {\frac {{\left (a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} + 1}{a b + b^{2}}} \log \left (-{\left ({\left (a^{2} b + a b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} + b\right )} \sqrt {\frac {{\left (a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} + 1}{a b + b^{2}}} + x\right ) - \frac {1}{4} \, \sqrt {-\frac {{\left (a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} - 1}{a b + b^{2}}} \log \left ({\left ({\left (a^{2} b + a b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} - b\right )} \sqrt {-\frac {{\left (a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} - 1}{a b + b^{2}}} + x\right ) + \frac {1}{4} \, \sqrt {-\frac {{\left (a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} - 1}{a b + b^{2}}} \log \left (-{\left ({\left (a^{2} b + a b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} - b\right )} \sqrt {-\frac {{\left (a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} b + 2 \, a^{2} b^{2} + a b^{3}}} - 1}{a b + b^{2}}} + x\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.25, size = 307, normalized size = 0.86 \begin {gather*} \frac {{\left (3 \, \sqrt {a^{2} + \sqrt {-a b} a} a^{2} b + 4 \, \sqrt {a^{2} + \sqrt {-a b} a} a b^{2} + 3 \, \sqrt {a^{2} + \sqrt {-a b} a} \sqrt {-a b} a^{2} + 4 \, \sqrt {a^{2} + \sqrt {-a b} a} \sqrt {-a b} a b\right )} {\left | a \right |} \arctan \left (\frac {2 \, \sqrt {\frac {1}{2}} x}{\sqrt {\frac {2 \, a + \sqrt {-4 \, {\left (a + b\right )} a + 4 \, a^{2}}}{a}}}\right )}{2 \, {\left (3 \, a^{5} b + 7 \, a^{4} b^{2} + 4 \, a^{3} b^{3}\right )}} + \frac {{\left (3 \, \sqrt {a^{2} - \sqrt {-a b} a} a^{2} b + 4 \, \sqrt {a^{2} - \sqrt {-a b} a} a b^{2} - 3 \, \sqrt {a^{2} - \sqrt {-a b} a} \sqrt {-a b} a^{2} - 4 \, \sqrt {a^{2} - \sqrt {-a b} a} \sqrt {-a b} a b\right )} {\left | a \right |} \arctan \left (\frac {2 \, \sqrt {\frac {1}{2}} x}{\sqrt {\frac {2 \, a - \sqrt {-4 \, {\left (a + b\right )} a + 4 \, a^{2}}}{a}}}\right )}{2 \, {\left (3 \, a^{5} b + 7 \, a^{4} b^{2} + 4 \, a^{3} b^{3}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.08, size = 913, normalized size = 2.54 \begin {gather*} -\frac {\arctan \left (\frac {-2 \sqrt {a}\, x +\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}}{\sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}}\right )}{\sqrt {a +b}\, \sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}}+\frac {\arctan \left (\frac {2 \sqrt {a}\, x +\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}}{\sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}}\right )}{\sqrt {a +b}\, \sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}}+\frac {\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}\, \sqrt {-2 a +2 \sqrt {a^{2}+a b}}\, \arctan \left (\frac {-2 \sqrt {a}\, x +\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}}{\sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}}\right )}{4 \sqrt {a +b}\, \sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}\, b}-\frac {\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}\, \sqrt {-2 a +2 \sqrt {a^{2}+a b}}\, \arctan \left (\frac {2 \sqrt {a}\, x +\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}}{\sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}}\right )}{4 \sqrt {a +b}\, \sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}\, b}-\frac {\sqrt {-2 a +2 \sqrt {a^{2}+a b}}\, \ln \left (-\sqrt {a}\, x^{2}+\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}\, x -\sqrt {a +b}\right )}{8 \sqrt {a +b}\, b}+\frac {\sqrt {-2 a +2 \sqrt {a^{2}+a b}}\, \ln \left (\sqrt {a}\, x^{2}+\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}\, x +\sqrt {a +b}\right )}{8 \sqrt {a +b}\, b}+\frac {\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}\, \sqrt {-2 a +2 \sqrt {a^{2}+a b}}\, \sqrt {a^{2}+a b}\, \arctan \left (\frac {-2 \sqrt {a}\, x +\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}}{\sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}}\right )}{4 \sqrt {a +b}\, \sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}\, a b}-\frac {\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}\, \sqrt {-2 a +2 \sqrt {a^{2}+a b}}\, \sqrt {a^{2}+a b}\, \arctan \left (\frac {2 \sqrt {a}\, x +\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}}{\sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}}\right )}{4 \sqrt {a +b}\, \sqrt {2 a +4 \sqrt {a +b}\, \sqrt {a}-2 \sqrt {\left (a +b \right ) a}}\, a b}-\frac {\sqrt {-2 a +2 \sqrt {a^{2}+a b}}\, \sqrt {a^{2}+a b}\, \ln \left (-\sqrt {a}\, x^{2}+\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}\, x -\sqrt {a +b}\right )}{8 \sqrt {a +b}\, a b}+\frac {\sqrt {-2 a +2 \sqrt {a^{2}+a b}}\, \sqrt {a^{2}+a b}\, \ln \left (\sqrt {a}\, x^{2}+\sqrt {-2 a +2 \sqrt {\left (a +b \right ) a}}\, x +\sqrt {a +b}\right )}{8 \sqrt {a +b}\, a b} \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 \frac {1}{a x^{4} + 2 \, a x^{2} + a + b}\,{d x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 5.16, size = 986, normalized size = 2.75 \begin {gather*} 2\,\mathrm {atanh}\left (\frac {8\,a^3\,x\,\sqrt {\frac {a\,b}{16\,\left (a^2\,b^2+a\,b^3\right )}-\frac {\sqrt {-a\,b^3}}{16\,\left (a^2\,b^2+a\,b^3\right )}}}{\frac {2\,a^4\,b^2}{a^2\,b^2+a\,b^3}-\frac {2\,a^3\,b\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}}-\frac {8\,a^5\,b^2\,x\,\sqrt {\frac {a\,b}{16\,\left (a^2\,b^2+a\,b^3\right )}-\frac {\sqrt {-a\,b^3}}{16\,\left (a^2\,b^2+a\,b^3\right )}}}{\frac {2\,a^5\,b^5}{a^2\,b^2+a\,b^3}+\frac {2\,a^6\,b^4}{a^2\,b^2+a\,b^3}-\frac {2\,a^4\,b^4\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}-\frac {2\,a^5\,b^3\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}}+\frac {8\,a^4\,b\,x\,\sqrt {\frac {a\,b}{16\,\left (a^2\,b^2+a\,b^3\right )}-\frac {\sqrt {-a\,b^3}}{16\,\left (a^2\,b^2+a\,b^3\right )}}\,\sqrt {-a\,b^3}}{\frac {2\,a^5\,b^5}{a^2\,b^2+a\,b^3}+\frac {2\,a^6\,b^4}{a^2\,b^2+a\,b^3}-\frac {2\,a^4\,b^4\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}-\frac {2\,a^5\,b^3\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}}\right )\,\sqrt {\frac {a\,b-\sqrt {-a\,b^3}}{16\,\left (a^2\,b^2+a\,b^3\right )}}-2\,\mathrm {atanh}\left (\frac {8\,a^5\,b^2\,x\,\sqrt {\frac {\sqrt {-a\,b^3}}{16\,\left (a^2\,b^2+a\,b^3\right )}+\frac {a\,b}{16\,\left (a^2\,b^2+a\,b^3\right )}}}{\frac {2\,a^5\,b^5}{a^2\,b^2+a\,b^3}+\frac {2\,a^6\,b^4}{a^2\,b^2+a\,b^3}+\frac {2\,a^4\,b^4\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}+\frac {2\,a^5\,b^3\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}}-\frac {8\,a^3\,x\,\sqrt {\frac {\sqrt {-a\,b^3}}{16\,\left (a^2\,b^2+a\,b^3\right )}+\frac {a\,b}{16\,\left (a^2\,b^2+a\,b^3\right )}}}{\frac {2\,a^4\,b^2}{a^2\,b^2+a\,b^3}+\frac {2\,a^3\,b\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}}+\frac {8\,a^4\,b\,x\,\sqrt {\frac {\sqrt {-a\,b^3}}{16\,\left (a^2\,b^2+a\,b^3\right )}+\frac {a\,b}{16\,\left (a^2\,b^2+a\,b^3\right )}}\,\sqrt {-a\,b^3}}{\frac {2\,a^5\,b^5}{a^2\,b^2+a\,b^3}+\frac {2\,a^6\,b^4}{a^2\,b^2+a\,b^3}+\frac {2\,a^4\,b^4\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}+\frac {2\,a^5\,b^3\,\sqrt {-a\,b^3}}{a^2\,b^2+a\,b^3}}\right )\,\sqrt {\frac {a\,b+\sqrt {-a\,b^3}}{16\,\left (a^2\,b^2+a\,b^3\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 1.24, size = 63, normalized size = 0.18 \begin {gather*} \operatorname {RootSum} {\left (t^{4} \left (256 a^{2} b^{2} + 256 a b^{3}\right ) - 32 t^{2} a b + 1, \left (t \mapsto t \log {\left (64 t^{3} a^{2} b + 64 t^{3} a b^{2} - 4 t a + 4 t b + x \right )} \right )\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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