Optimal. Leaf size=265 \[ -\frac{d^2 \left (8 a^2 c^2+20 a b c+11 b^2\right ) \left (c+d x^2\right ) \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{16 c^3 x^2 (a c+b)^2}+\frac{b d^3 \left (8 a^2 c^2+12 a b c+5 b^2\right ) \tanh ^{-1}\left (\frac{\sqrt{c} \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{\sqrt{a c+b}}\right )}{16 c^{7/2} (a c+b)^{5/2}}+\frac{d (4 a c+3 b) \left (c+d x^2\right )^2 \sqrt{\frac{a c+a d x^2+b}{c+d x^2}}}{8 c^3 x^4 (a c+b)}-\frac{\left (c+d x^2\right )^3 \left (\frac{a c+a d x^2+b}{c+d x^2}\right )^{3/2}}{6 c^2 x^6 (a c+b)} \]
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Rubi [A] time = 0.606903, antiderivative size = 271, normalized size of antiderivative = 1.02, number of steps used = 9, number of rules used = 8, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.381, Rules used = {6722, 1975, 446, 99, 151, 12, 93, 208} \[ \frac{b d^3 \left (8 a^2 c^2+12 a b c+5 b^2\right ) \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}} \tanh ^{-1}\left (\frac{\sqrt{a c+b} \sqrt{c+d x^2}}{\sqrt{c} \sqrt{a \left (c+d x^2\right )+b}}\right )}{16 c^{7/2} (a c+b)^{5/2} \sqrt{a \left (c+d x^2\right )+b}}-\frac{d^2 (2 a c+5 b) (4 a c+3 b) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{48 c^3 x^2 (a c+b)^2}+\frac{d (4 a c+5 b) \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{24 c^2 x^4 (a c+b)}-\frac{\left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{6 c x^6} \]
Antiderivative was successfully verified.
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Rule 6722
Rule 1975
Rule 446
Rule 99
Rule 151
Rule 12
Rule 93
Rule 208
Rubi steps
\begin{align*} \int \frac{\sqrt{a+\frac{b}{c+d x^2}}}{x^7} \, dx &=\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \int \frac{\sqrt{b+a \left (c+d x^2\right )}}{x^7 \sqrt{c+d x^2}} \, dx}{\sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \int \frac{\sqrt{b+a c+a d x^2}}{x^7 \sqrt{c+d x^2}} \, dx}{\sqrt{b+a \left (c+d x^2\right )}}\\ &=\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{\sqrt{b+a c+a d x}}{x^4 \sqrt{c+d x}} \, dx,x,x^2\right )}{2 \sqrt{b+a \left (c+d x^2\right )}}\\ &=-\frac{\left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{6 c x^6}+\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{-\frac{1}{2} (5 b+4 a c) d-2 a d^2 x}{x^3 \sqrt{c+d x} \sqrt{b+a c+a d x}} \, dx,x,x^2\right )}{6 c \sqrt{b+a \left (c+d x^2\right )}}\\ &=-\frac{\left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{6 c x^6}+\frac{(5 b+4 a c) d \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{24 c^2 (b+a c) x^4}-\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{-\frac{1}{4} (5 b+2 a c) (3 b+4 a c) d^2-\frac{1}{2} a (5 b+4 a c) d^3 x}{x^2 \sqrt{c+d x} \sqrt{b+a c+a d x}} \, dx,x,x^2\right )}{12 c^2 (b+a c) \sqrt{b+a \left (c+d x^2\right )}}\\ &=-\frac{\left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{6 c x^6}+\frac{(5 b+4 a c) d \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{24 c^2 (b+a c) x^4}-\frac{(5 b+2 a c) (3 b+4 a c) d^2 \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{48 c^3 (b+a c)^2 x^2}+\frac{\left (\sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int -\frac{3 b \left (5 b^2+12 a b c+8 a^2 c^2\right ) d^3}{8 x \sqrt{c+d x} \sqrt{b+a c+a d x}} \, dx,x,x^2\right )}{12 c^3 (b+a c)^2 \sqrt{b+a \left (c+d x^2\right )}}\\ &=-\frac{\left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{6 c x^6}+\frac{(5 b+4 a c) d \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{24 c^2 (b+a c) x^4}-\frac{(5 b+2 a c) (3 b+4 a c) d^2 \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{48 c^3 (b+a c)^2 x^2}-\frac{\left (b \left (5 b^2+12 a b c+8 a^2 c^2\right ) d^3 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{1}{x \sqrt{c+d x} \sqrt{b+a c+a d x}} \, dx,x,x^2\right )}{32 c^3 (b+a c)^2 \sqrt{b+a \left (c+d x^2\right )}}\\ &=-\frac{\left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{6 c x^6}+\frac{(5 b+4 a c) d \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{24 c^2 (b+a c) x^4}-\frac{(5 b+2 a c) (3 b+4 a c) d^2 \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{48 c^3 (b+a c)^2 x^2}-\frac{\left (b \left (5 b^2+12 a b c+8 a^2 c^2\right ) d^3 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}}\right ) \operatorname{Subst}\left (\int \frac{1}{-c-(-b-a c) x^2} \, dx,x,\frac{\sqrt{c+d x^2}}{\sqrt{b+a \left (c+d x^2\right )}}\right )}{16 c^3 (b+a c)^2 \sqrt{b+a \left (c+d x^2\right )}}\\ &=-\frac{\left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{6 c x^6}+\frac{(5 b+4 a c) d \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{24 c^2 (b+a c) x^4}-\frac{(5 b+2 a c) (3 b+4 a c) d^2 \left (c+d x^2\right ) \sqrt{a+\frac{b}{c+d x^2}}}{48 c^3 (b+a c)^2 x^2}+\frac{b \left (5 b^2+12 a b c+8 a^2 c^2\right ) d^3 \sqrt{c+d x^2} \sqrt{a+\frac{b}{c+d x^2}} \tanh ^{-1}\left (\frac{\sqrt{b+a c} \sqrt{c+d x^2}}{\sqrt{c} \sqrt{b+a \left (c+d x^2\right )}}\right )}{16 c^{7/2} (b+a c)^{5/2} \sqrt{b+a \left (c+d x^2\right )}}\\ \end{align*}
Mathematica [A] time = 0.459011, size = 259, normalized size = 0.98 \[ \frac{\sqrt{\frac{a c+a d x^2+b}{c+d x^2}} \left (3 b d^3 x^6 \left (8 a^2 c^2+12 a b c+5 b^2\right ) \sqrt{c+d x^2} \tanh ^{-1}\left (\frac{\sqrt{a c+b} \sqrt{c+d x^2}}{\sqrt{c} \sqrt{a c+a d x^2+b}}\right )-\sqrt{c} \sqrt{a c+b} \left (c+d x^2\right ) \sqrt{a \left (c+d x^2\right )+b} \left (8 a^2 c^2 \left (c^2-c d x^2+d^2 x^4\right )+2 a b c \left (8 c^2-9 c d x^2+13 d^2 x^4\right )+b^2 \left (8 c^2-10 c d x^2+15 d^2 x^4\right )\right )\right )}{48 c^{7/2} x^6 (a c+b)^{5/2} \sqrt{a \left (c+d x^2\right )+b}} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.028, size = 1518, normalized size = 5.7 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 5.93521, size = 1601, normalized size = 6.04 \begin{align*} \left [\frac{3 \,{\left (8 \, a^{2} b c^{2} + 12 \, a b^{2} c + 5 \, b^{3}\right )} \sqrt{a c^{2} + b c} d^{3} x^{6} \log \left (\frac{{\left (8 \, a^{2} c^{2} + 8 \, a b c + b^{2}\right )} d^{2} x^{4} + 8 \, a^{2} c^{4} + 16 \, a b c^{3} + 8 \, b^{2} c^{2} + 8 \,{\left (2 \, a^{2} c^{3} + 3 \, a b c^{2} + b^{2} c\right )} d x^{2} + 4 \,{\left ({\left (2 \, a c + b\right )} d^{2} x^{4} + 2 \, a c^{3} +{\left (4 \, a c^{2} + 3 \, b c\right )} d x^{2} + 2 \, b c^{2}\right )} \sqrt{a c^{2} + b c} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{x^{4}}\right ) - 4 \,{\left (8 \, a^{3} c^{7} +{\left (8 \, a^{3} c^{4} + 34 \, a^{2} b c^{3} + 41 \, a b^{2} c^{2} + 15 \, b^{3} c\right )} d^{3} x^{6} + 24 \, a^{2} b c^{6} + 24 \, a b^{2} c^{5} + 8 \, b^{3} c^{4} +{\left (8 \, a^{2} b c^{4} + 13 \, a b^{2} c^{3} + 5 \, b^{3} c^{2}\right )} d^{2} x^{4} - 2 \,{\left (a^{2} b c^{5} + 2 \, a b^{2} c^{4} + b^{3} c^{3}\right )} d x^{2}\right )} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{192 \,{\left (a^{3} c^{7} + 3 \, a^{2} b c^{6} + 3 \, a b^{2} c^{5} + b^{3} c^{4}\right )} x^{6}}, -\frac{3 \,{\left (8 \, a^{2} b c^{2} + 12 \, a b^{2} c + 5 \, b^{3}\right )} \sqrt{-a c^{2} - b c} d^{3} x^{6} \arctan \left (\frac{{\left ({\left (2 \, a c + b\right )} d x^{2} + 2 \, a c^{2} + 2 \, b c\right )} \sqrt{-a c^{2} - b c} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{2 \,{\left (a^{2} c^{3} + 2 \, a b c^{2} +{\left (a^{2} c^{2} + a b c\right )} d x^{2} + b^{2} c\right )}}\right ) + 2 \,{\left (8 \, a^{3} c^{7} +{\left (8 \, a^{3} c^{4} + 34 \, a^{2} b c^{3} + 41 \, a b^{2} c^{2} + 15 \, b^{3} c\right )} d^{3} x^{6} + 24 \, a^{2} b c^{6} + 24 \, a b^{2} c^{5} + 8 \, b^{3} c^{4} +{\left (8 \, a^{2} b c^{4} + 13 \, a b^{2} c^{3} + 5 \, b^{3} c^{2}\right )} d^{2} x^{4} - 2 \,{\left (a^{2} b c^{5} + 2 \, a b^{2} c^{4} + b^{3} c^{3}\right )} d x^{2}\right )} \sqrt{\frac{a d x^{2} + a c + b}{d x^{2} + c}}}{96 \,{\left (a^{3} c^{7} + 3 \, a^{2} b c^{6} + 3 \, a b^{2} c^{5} + b^{3} c^{4}\right )} x^{6}}\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{\sqrt{\frac{a c + a d x^{2} + b}{c + d x^{2}}}}{x^{7}}\, 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{\sqrt{a + \frac{b}{d x^{2} + c}}}{x^{7}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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