Optimal. Leaf size=368 \[ \frac{\sqrt{d} \left (a+b x^2\right ) \log \left (-\sqrt{2} \sqrt [4]{a} \sqrt [4]{b} \sqrt{d x}+\sqrt{a} \sqrt{d}+\sqrt{b} \sqrt{d} x\right )}{2 \sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}-\frac{\sqrt{d} \left (a+b x^2\right ) \log \left (\sqrt{2} \sqrt [4]{a} \sqrt [4]{b} \sqrt{d x}+\sqrt{a} \sqrt{d}+\sqrt{b} \sqrt{d} x\right )}{2 \sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}-\frac{\sqrt{d} \left (a+b x^2\right ) \tan ^{-1}\left (1-\frac{\sqrt{2} \sqrt [4]{b} \sqrt{d x}}{\sqrt [4]{a} \sqrt{d}}\right )}{\sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\sqrt{d} \left (a+b x^2\right ) \tan ^{-1}\left (\frac{\sqrt{2} \sqrt [4]{b} \sqrt{d x}}{\sqrt [4]{a} \sqrt{d}}+1\right )}{\sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}} \]
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Rubi [A] time = 0.246074, antiderivative size = 368, normalized size of antiderivative = 1., number of steps used = 11, number of rules used = 8, integrand size = 30, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.267, Rules used = {1112, 329, 297, 1162, 617, 204, 1165, 628} \[ \frac{\sqrt{d} \left (a+b x^2\right ) \log \left (-\sqrt{2} \sqrt [4]{a} \sqrt [4]{b} \sqrt{d x}+\sqrt{a} \sqrt{d}+\sqrt{b} \sqrt{d} x\right )}{2 \sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}-\frac{\sqrt{d} \left (a+b x^2\right ) \log \left (\sqrt{2} \sqrt [4]{a} \sqrt [4]{b} \sqrt{d x}+\sqrt{a} \sqrt{d}+\sqrt{b} \sqrt{d} x\right )}{2 \sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}-\frac{\sqrt{d} \left (a+b x^2\right ) \tan ^{-1}\left (1-\frac{\sqrt{2} \sqrt [4]{b} \sqrt{d x}}{\sqrt [4]{a} \sqrt{d}}\right )}{\sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\sqrt{d} \left (a+b x^2\right ) \tan ^{-1}\left (\frac{\sqrt{2} \sqrt [4]{b} \sqrt{d x}}{\sqrt [4]{a} \sqrt{d}}+1\right )}{\sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}} \]
Antiderivative was successfully verified.
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Rule 1112
Rule 329
Rule 297
Rule 1162
Rule 617
Rule 204
Rule 1165
Rule 628
Rubi steps
\begin{align*} \int \frac{\sqrt{d x}}{\sqrt{a^2+2 a b x^2+b^2 x^4}} \, dx &=\frac{\left (a b+b^2 x^2\right ) \int \frac{\sqrt{d x}}{a b+b^2 x^2} \, dx}{\sqrt{a^2+2 a b x^2+b^2 x^4}}\\ &=\frac{\left (2 \left (a b+b^2 x^2\right )\right ) \operatorname{Subst}\left (\int \frac{x^2}{a b+\frac{b^2 x^4}{d^2}} \, dx,x,\sqrt{d x}\right )}{d \sqrt{a^2+2 a b x^2+b^2 x^4}}\\ &=-\frac{\left (a b+b^2 x^2\right ) \operatorname{Subst}\left (\int \frac{\sqrt{a} d-\sqrt{b} x^2}{a b+\frac{b^2 x^4}{d^2}} \, dx,x,\sqrt{d x}\right )}{\sqrt{b} d \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\left (a b+b^2 x^2\right ) \operatorname{Subst}\left (\int \frac{\sqrt{a} d+\sqrt{b} x^2}{a b+\frac{b^2 x^4}{d^2}} \, dx,x,\sqrt{d x}\right )}{\sqrt{b} d \sqrt{a^2+2 a b x^2+b^2 x^4}}\\ &=\frac{\left (\sqrt{d} \left (a b+b^2 x^2\right )\right ) \operatorname{Subst}\left (\int \frac{\frac{\sqrt{2} \sqrt [4]{a} \sqrt{d}}{\sqrt [4]{b}}+2 x}{-\frac{\sqrt{a} d}{\sqrt{b}}-\frac{\sqrt{2} \sqrt [4]{a} \sqrt{d} x}{\sqrt [4]{b}}-x^2} \, dx,x,\sqrt{d x}\right )}{2 \sqrt{2} \sqrt [4]{a} b^{7/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\left (\sqrt{d} \left (a b+b^2 x^2\right )\right ) \operatorname{Subst}\left (\int \frac{\frac{\sqrt{2} \sqrt [4]{a} \sqrt{d}}{\sqrt [4]{b}}-2 x}{-\frac{\sqrt{a} d}{\sqrt{b}}+\frac{\sqrt{2} \sqrt [4]{a} \sqrt{d} x}{\sqrt [4]{b}}-x^2} \, dx,x,\sqrt{d x}\right )}{2 \sqrt{2} \sqrt [4]{a} b^{7/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\left (d \left (a b+b^2 x^2\right )\right ) \operatorname{Subst}\left (\int \frac{1}{\frac{\sqrt{a} d}{\sqrt{b}}-\frac{\sqrt{2} \sqrt [4]{a} \sqrt{d} x}{\sqrt [4]{b}}+x^2} \, dx,x,\sqrt{d x}\right )}{2 b^2 \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\left (d \left (a b+b^2 x^2\right )\right ) \operatorname{Subst}\left (\int \frac{1}{\frac{\sqrt{a} d}{\sqrt{b}}+\frac{\sqrt{2} \sqrt [4]{a} \sqrt{d} x}{\sqrt [4]{b}}+x^2} \, dx,x,\sqrt{d x}\right )}{2 b^2 \sqrt{a^2+2 a b x^2+b^2 x^4}}\\ &=\frac{\sqrt{d} \left (a+b x^2\right ) \log \left (\sqrt{a} \sqrt{d}+\sqrt{b} \sqrt{d} x-\sqrt{2} \sqrt [4]{a} \sqrt [4]{b} \sqrt{d x}\right )}{2 \sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}-\frac{\sqrt{d} \left (a+b x^2\right ) \log \left (\sqrt{a} \sqrt{d}+\sqrt{b} \sqrt{d} x+\sqrt{2} \sqrt [4]{a} \sqrt [4]{b} \sqrt{d x}\right )}{2 \sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\left (\sqrt{d} \left (a b+b^2 x^2\right )\right ) \operatorname{Subst}\left (\int \frac{1}{-1-x^2} \, dx,x,1-\frac{\sqrt{2} \sqrt [4]{b} \sqrt{d x}}{\sqrt [4]{a} \sqrt{d}}\right )}{\sqrt{2} \sqrt [4]{a} b^{7/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}-\frac{\left (\sqrt{d} \left (a b+b^2 x^2\right )\right ) \operatorname{Subst}\left (\int \frac{1}{-1-x^2} \, dx,x,1+\frac{\sqrt{2} \sqrt [4]{b} \sqrt{d x}}{\sqrt [4]{a} \sqrt{d}}\right )}{\sqrt{2} \sqrt [4]{a} b^{7/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}\\ &=-\frac{\sqrt{d} \left (a+b x^2\right ) \tan ^{-1}\left (1-\frac{\sqrt{2} \sqrt [4]{b} \sqrt{d x}}{\sqrt [4]{a} \sqrt{d}}\right )}{\sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\sqrt{d} \left (a+b x^2\right ) \tan ^{-1}\left (1+\frac{\sqrt{2} \sqrt [4]{b} \sqrt{d x}}{\sqrt [4]{a} \sqrt{d}}\right )}{\sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}+\frac{\sqrt{d} \left (a+b x^2\right ) \log \left (\sqrt{a} \sqrt{d}+\sqrt{b} \sqrt{d} x-\sqrt{2} \sqrt [4]{a} \sqrt [4]{b} \sqrt{d x}\right )}{2 \sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}-\frac{\sqrt{d} \left (a+b x^2\right ) \log \left (\sqrt{a} \sqrt{d}+\sqrt{b} \sqrt{d} x+\sqrt{2} \sqrt [4]{a} \sqrt [4]{b} \sqrt{d x}\right )}{2 \sqrt{2} \sqrt [4]{a} b^{3/4} \sqrt{a^2+2 a b x^2+b^2 x^4}}\\ \end{align*}
Mathematica [A] time = 0.0452284, size = 85, normalized size = 0.23 \[ \frac{\sqrt{d x} \left (a+b x^2\right ) \left (\tan ^{-1}\left (\frac{\sqrt [4]{b} \sqrt{x}}{\sqrt [4]{-a}}\right )+\tanh ^{-1}\left (\frac{a \sqrt [4]{b} \sqrt{x}}{(-a)^{5/4}}\right )\right )}{\sqrt [4]{-a} b^{3/4} \sqrt{x} \sqrt{\left (a+b x^2\right )^2}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.225, size = 183, normalized size = 0.5 \begin{align*}{\frac{d \left ( b{x}^{2}+a \right ) \sqrt{2}}{4\,b} \left ( \ln \left ( -{ \left ( \sqrt [4]{{\frac{a{d}^{2}}{b}}}\sqrt{dx}\sqrt{2}-dx-\sqrt{{\frac{a{d}^{2}}{b}}} \right ) \left ( dx+\sqrt [4]{{\frac{a{d}^{2}}{b}}}\sqrt{dx}\sqrt{2}+\sqrt{{\frac{a{d}^{2}}{b}}} \right ) ^{-1}} \right ) +2\,\arctan \left ({ \left ( \sqrt{2}\sqrt{dx}+\sqrt [4]{{\frac{a{d}^{2}}{b}}} \right ){\frac{1}{\sqrt [4]{{\frac{a{d}^{2}}{b}}}}}} \right ) +2\,\arctan \left ({ \left ( \sqrt{2}\sqrt{dx}-\sqrt [4]{{\frac{a{d}^{2}}{b}}} \right ){\frac{1}{\sqrt [4]{{\frac{a{d}^{2}}{b}}}}}} \right ) \right ){\frac{1}{\sqrt{ \left ( b{x}^{2}+a \right ) ^{2}}}}{\frac{1}{\sqrt [4]{{\frac{a{d}^{2}}{b}}}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\sqrt{d x}}{\sqrt{{\left (b x^{2} + a\right )}^{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.62866, size = 390, normalized size = 1.06 \begin{align*} -2 \, \left (-\frac{d^{2}}{a b^{3}}\right )^{\frac{1}{4}} \arctan \left (-\frac{\sqrt{d x} b d \left (-\frac{d^{2}}{a b^{3}}\right )^{\frac{1}{4}} - \sqrt{-a b d^{2} \sqrt{-\frac{d^{2}}{a b^{3}}} + d^{3} x} b \left (-\frac{d^{2}}{a b^{3}}\right )^{\frac{1}{4}}}{d^{2}}\right ) + \frac{1}{2} \, \left (-\frac{d^{2}}{a b^{3}}\right )^{\frac{1}{4}} \log \left (a b^{2} \left (-\frac{d^{2}}{a b^{3}}\right )^{\frac{3}{4}} + \sqrt{d x} d\right ) - \frac{1}{2} \, \left (-\frac{d^{2}}{a b^{3}}\right )^{\frac{1}{4}} \log \left (-a b^{2} \left (-\frac{d^{2}}{a b^{3}}\right )^{\frac{3}{4}} + \sqrt{d x} d\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 152.039, size = 41, normalized size = 0.11 \begin{align*} 2 d \operatorname{RootSum}{\left (256 t^{4} a b^{3} d^{2} + 1, \left ( t \mapsto t \log{\left (64 t^{3} a b^{2} d^{2} + \sqrt{d x} \right )} \right )\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.28289, size = 339, normalized size = 0.92 \begin{align*} \frac{1}{4} \,{\left (\frac{2 \, \sqrt{2} \left (a b^{3} d^{2}\right )^{\frac{3}{4}} \arctan \left (\frac{\sqrt{2}{\left (\sqrt{2} \left (\frac{a d^{2}}{b}\right )^{\frac{1}{4}} + 2 \, \sqrt{d x}\right )}}{2 \, \left (\frac{a d^{2}}{b}\right )^{\frac{1}{4}}}\right )}{a b^{3} d} + \frac{2 \, \sqrt{2} \left (a b^{3} d^{2}\right )^{\frac{3}{4}} \arctan \left (-\frac{\sqrt{2}{\left (\sqrt{2} \left (\frac{a d^{2}}{b}\right )^{\frac{1}{4}} - 2 \, \sqrt{d x}\right )}}{2 \, \left (\frac{a d^{2}}{b}\right )^{\frac{1}{4}}}\right )}{a b^{3} d} - \frac{\sqrt{2} \left (a b^{3} d^{2}\right )^{\frac{3}{4}} \log \left (d x + \sqrt{2} \left (\frac{a d^{2}}{b}\right )^{\frac{1}{4}} \sqrt{d x} + \sqrt{\frac{a d^{2}}{b}}\right )}{a b^{3} d} + \frac{\sqrt{2} \left (a b^{3} d^{2}\right )^{\frac{3}{4}} \log \left (d x - \sqrt{2} \left (\frac{a d^{2}}{b}\right )^{\frac{1}{4}} \sqrt{d x} + \sqrt{\frac{a d^{2}}{b}}\right )}{a b^{3} d}\right )} \mathrm{sgn}\left (b x^{2} + a\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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