Optimal. Leaf size=431 \[ \frac{d^2 x (b-a c) \left (a c+a d x^2+b\right )}{3 c (a c+b)^2 \left (c+d x^2\right ) \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}-\frac{a \sqrt{c} d^{3/2} \left (a c+a d x^2+b\right ) F\left (\tan ^{-1}\left (\frac{\sqrt{d} x}{\sqrt{c}}\right )|\frac{b}{b+a c}\right )}{3 (a c+b)^2 \left (c+d x^2\right ) \sqrt{\frac{a c+a d x^2+b}{c+d x^2}} \sqrt{\frac{c \left (a c+a d x^2+b\right )}{(a c+b) \left (c+d x^2\right )}}}-\frac{d^{3/2} (b-a c) \left (a c+a d x^2+b\right ) E\left (\tan ^{-1}\left (\frac{\sqrt{d} x}{\sqrt{c}}\right )|\frac{b}{b+a c}\right )}{3 \sqrt{c} (a c+b)^2 \left (c+d x^2\right ) \sqrt{\frac{a c+a d x^2+b}{c+d x^2}} \sqrt{\frac{c \left (a c+a d x^2+b\right )}{(a c+b) \left (c+d x^2\right )}}}-\frac{d (b-a c) \left (a c+a d x^2+b\right )}{3 c x (a c+b)^2 \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}-\frac{a c+a d x^2+b}{3 x^3 (a c+b) \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}} \]
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Rubi [A] time = 0.637087, antiderivative size = 486, normalized size of antiderivative = 1.13, number of steps used = 8, number of rules used = 8, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.381, Rules used = {6722, 1975, 475, 583, 531, 418, 492, 411} \[ \frac{d^2 x (b-a c) \sqrt{a c+a d x^2+b} \sqrt{a \left (c+d x^2\right )+b}}{3 c (a c+b)^2 \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}-\frac{a \sqrt{c} d^{3/2} \sqrt{a c+a d x^2+b} \sqrt{a \left (c+d x^2\right )+b} F\left (\tan ^{-1}\left (\frac{\sqrt{d} x}{\sqrt{c}}\right )|\frac{b}{b+a c}\right )}{3 (a c+b)^2 \left (c+d x^2\right ) \sqrt{\frac{c \left (a c+a d x^2+b\right )}{(a c+b) \left (c+d x^2\right )}} \sqrt{a+\frac{b}{c+d x^2}}}-\frac{d^{3/2} (b-a c) \sqrt{a c+a d x^2+b} \sqrt{a \left (c+d x^2\right )+b} E\left (\tan ^{-1}\left (\frac{\sqrt{d} x}{\sqrt{c}}\right )|\frac{b}{b+a c}\right )}{3 \sqrt{c} (a c+b)^2 \left (c+d x^2\right ) \sqrt{\frac{c \left (a c+a d x^2+b\right )}{(a c+b) \left (c+d x^2\right )}} \sqrt{a+\frac{b}{c+d x^2}}}-\frac{d (b-a c) \sqrt{a c+a d x^2+b} \sqrt{a \left (c+d x^2\right )+b}}{3 c x (a c+b)^2 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{\sqrt{a c+a d x^2+b} \sqrt{a \left (c+d x^2\right )+b}}{3 x^3 (a c+b) \sqrt{a+\frac{b}{c+d x^2}}} \]
Antiderivative was successfully verified.
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Rule 6722
Rule 1975
Rule 475
Rule 583
Rule 531
Rule 418
Rule 492
Rule 411
Rubi steps
\begin{align*} \int \frac{1}{x^4 \sqrt{a+\frac{b}{c+d x^2}}} \, dx &=\frac{\sqrt{b+a \left (c+d x^2\right )} \int \frac{\sqrt{c+d x^2}}{x^4 \sqrt{b+a \left (c+d x^2\right )}} \, dx}{\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=\frac{\sqrt{b+a \left (c+d x^2\right )} \int \frac{\sqrt{c+d x^2}}{x^4 \sqrt{b+a c+a d x^2}} \, dx}{\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{\sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 (b+a c) x^3 \sqrt{a+\frac{b}{c+d x^2}}}+\frac{\sqrt{b+a \left (c+d x^2\right )} \int \frac{(b-a c) d-a d^2 x^2}{x^2 \sqrt{c+d x^2} \sqrt{b+a c+a d x^2}} \, dx}{3 (b+a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{\sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 (b+a c) x^3 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{(b-a c) d \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 c (b+a c)^2 x \sqrt{a+\frac{b}{c+d x^2}}}-\frac{\sqrt{b+a \left (c+d x^2\right )} \int \frac{a c (b+a c) d^2-a (b-a c) d^3 x^2}{\sqrt{c+d x^2} \sqrt{b+a c+a d x^2}} \, dx}{3 c (b+a c)^2 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{\sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 (b+a c) x^3 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{(b-a c) d \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 c (b+a c)^2 x \sqrt{a+\frac{b}{c+d x^2}}}-\frac{\left (a d^2 \sqrt{b+a \left (c+d x^2\right )}\right ) \int \frac{1}{\sqrt{c+d x^2} \sqrt{b+a c+a d x^2}} \, dx}{3 (b+a c) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}+\frac{\left (a (b-a c) d^3 \sqrt{b+a \left (c+d x^2\right )}\right ) \int \frac{x^2}{\sqrt{c+d x^2} \sqrt{b+a c+a d x^2}} \, dx}{3 c (b+a c)^2 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{\sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 (b+a c) x^3 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{(b-a c) d \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 c (b+a c)^2 x \sqrt{a+\frac{b}{c+d x^2}}}+\frac{(b-a c) d^2 x \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 c (b+a c)^2 \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}-\frac{a \sqrt{c} d^{3/2} \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )} F\left (\tan ^{-1}\left (\frac{\sqrt{d} x}{\sqrt{c}}\right )|\frac{b}{b+a c}\right )}{3 (b+a c)^2 \left (c+d x^2\right ) \sqrt{\frac{c \left (b+a c+a d x^2\right )}{(b+a c) \left (c+d x^2\right )}} \sqrt{a+\frac{b}{c+d x^2}}}-\frac{\left ((b-a c) d^2 \sqrt{b+a \left (c+d x^2\right )}\right ) \int \frac{\sqrt{b+a c+a d x^2}}{\left (c+d x^2\right )^{3/2}} \, dx}{3 (b+a c)^2 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}}\\ &=-\frac{\sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 (b+a c) x^3 \sqrt{a+\frac{b}{c+d x^2}}}-\frac{(b-a c) d \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 c (b+a c)^2 x \sqrt{a+\frac{b}{c+d x^2}}}+\frac{(b-a c) d^2 x \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )}}{3 c (b+a c)^2 \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}-\frac{(b-a c) d^{3/2} \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )} E\left (\tan ^{-1}\left (\frac{\sqrt{d} x}{\sqrt{c}}\right )|\frac{b}{b+a c}\right )}{3 \sqrt{c} (b+a c)^2 \left (c+d x^2\right ) \sqrt{\frac{c \left (b+a c+a d x^2\right )}{(b+a c) \left (c+d x^2\right )}} \sqrt{a+\frac{b}{c+d x^2}}}-\frac{a \sqrt{c} d^{3/2} \sqrt{b+a c+a d x^2} \sqrt{b+a \left (c+d x^2\right )} F\left (\tan ^{-1}\left (\frac{\sqrt{d} x}{\sqrt{c}}\right )|\frac{b}{b+a c}\right )}{3 (b+a c)^2 \left (c+d x^2\right ) \sqrt{\frac{c \left (b+a c+a d x^2\right )}{(b+a c) \left (c+d x^2\right )}} \sqrt{a+\frac{b}{c+d x^2}}}\\ \end{align*}
Mathematica [C] time = 0.909955, size = 314, normalized size = 0.73 \[ \frac{\sqrt{\frac{a c+a d x^2+b}{c+d x^2}} \left (-\left (c+d x^2\right ) \sqrt{\frac{a d}{a c+b}} \left (a^2 c \left (c^2-d^2 x^4\right )+a b \left (2 c^2+c d x^2+d^2 x^4\right )+b^2 \left (c+d x^2\right )\right )+2 i a b c d^2 x^3 \sqrt{\frac{d x^2}{c}+1} \sqrt{\frac{a c+a d x^2+b}{a c+b}} F\left (i \sinh ^{-1}\left (\sqrt{\frac{a d}{b+a c}} x\right )|\frac{b}{a c}+1\right )+i a c d^2 x^3 (a c-b) \sqrt{\frac{d x^2}{c}+1} \sqrt{\frac{a c+a d x^2+b}{a c+b}} E\left (i \sinh ^{-1}\left (\sqrt{\frac{a d}{b+a c}} x\right )|\frac{b}{a c}+1\right )\right )}{3 c x^3 (a c+b)^2 \sqrt{\frac{a d}{a c+b}} \left (a \left (c+d x^2\right )+b\right )} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.016, size = 596, normalized size = 1.4 \begin{align*}{\frac{d{x}^{2}+c}{3\,c{x}^{3} \left ( ac+b \right ) ^{2}} \left ( \sqrt{-{\frac{ad}{ac+b}}}{x}^{6}{a}^{2}c{d}^{3}-\sqrt{-{\frac{ad}{ac+b}}}{x}^{6}ab{d}^{3}-\sqrt{{\frac{ad{x}^{2}+ac+b}{ac+b}}}\sqrt{{\frac{d{x}^{2}+c}{c}}}{\it EllipticE} \left ( x\sqrt{-{\frac{ad}{ac+b}}},\sqrt{{\frac{ac+b}{ac}}} \right ){x}^{3}{a}^{2}{c}^{2}{d}^{2}+\sqrt{-{\frac{ad}{ac+b}}}{x}^{4}{a}^{2}{c}^{2}{d}^{2}-2\,\sqrt{{\frac{ad{x}^{2}+ac+b}{ac+b}}}\sqrt{{\frac{d{x}^{2}+c}{c}}}{\it EllipticF} \left ( x\sqrt{-{\frac{ad}{ac+b}}},\sqrt{{\frac{ac+b}{ac}}} \right ){x}^{3}abc{d}^{2}+\sqrt{{\frac{ad{x}^{2}+ac+b}{ac+b}}}\sqrt{{\frac{d{x}^{2}+c}{c}}}{\it EllipticE} \left ( x\sqrt{-{\frac{ad}{ac+b}}},\sqrt{{\frac{ac+b}{ac}}} \right ){x}^{3}abc{d}^{2}-2\,\sqrt{-{\frac{ad}{ac+b}}}{x}^{4}abc{d}^{2}-\sqrt{-{\frac{ad}{ac+b}}}{x}^{4}{b}^{2}{d}^{2}-\sqrt{-{\frac{ad}{ac+b}}}{x}^{2}{a}^{2}{c}^{3}d-3\,\sqrt{-{\frac{ad}{ac+b}}}{x}^{2}ab{c}^{2}d-2\,\sqrt{-{\frac{ad}{ac+b}}}{x}^{2}{b}^{2}cd-\sqrt{-{\frac{ad}{ac+b}}}{a}^{2}{c}^{4}-2\,\sqrt{-{\frac{ad}{ac+b}}}ab{c}^{3}-\sqrt{-{\frac{ad}{ac+b}}}{b}^{2}{c}^{2} \right ) \sqrt{{\frac{ad{x}^{2}+ac+b}{d{x}^{2}+c}}}{\frac{1}{\sqrt{a{d}^{2}{x}^{4}+2\,acd{x}^{2}+bd{x}^{2}+{c}^{2}a+bc}}}{\frac{1}{\sqrt{-{\frac{ad}{ac+b}}}}}{\frac{1}{\sqrt{ \left ( d{x}^{2}+c \right ) \left ( ad{x}^{2}+ac+b \right ) }}}} \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{1}{\sqrt{a + \frac{b}{d x^{2} + c}} x^{4}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{{\left (d x^{2} + c\right )} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{a d x^{6} +{\left (a c + b\right )} x^{4}}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{x^{4} \sqrt{\frac{a c + a d x^{2} + b}{c + d x^{2}}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{\sqrt{a + \frac{b}{d x^{2} + c}} x^{4}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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