Integrand size = 24, antiderivative size = 149 \[ \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^7} \, dx=-\frac {\left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \sqrt {c+d x^2}}{16 c^2 x^2}-\frac {a^2 \left (c+d x^2\right )^{3/2}}{6 c x^6}-\frac {a (4 b c-a d) \left (c+d x^2\right )^{3/2}}{8 c^2 x^4}-\frac {d \left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \text {arctanh}\left (\frac {\sqrt {c+d x^2}}{\sqrt {c}}\right )}{16 c^{5/2}} \]
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Time = 0.10 (sec) , antiderivative size = 149, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {457, 91, 79, 43, 65, 214} \[ \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^7} \, dx=-\frac {d \left (a^2 d^2-4 a b c d+8 b^2 c^2\right ) \text {arctanh}\left (\frac {\sqrt {c+d x^2}}{\sqrt {c}}\right )}{16 c^{5/2}}-\frac {\sqrt {c+d x^2} \left (a^2 d^2-4 a b c d+8 b^2 c^2\right )}{16 c^2 x^2}-\frac {a^2 \left (c+d x^2\right )^{3/2}}{6 c x^6}-\frac {a \left (c+d x^2\right )^{3/2} (4 b c-a d)}{8 c^2 x^4} \]
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Rule 43
Rule 65
Rule 79
Rule 91
Rule 214
Rule 457
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {(a+b x)^2 \sqrt {c+d x}}{x^4} \, dx,x,x^2\right ) \\ & = -\frac {a^2 \left (c+d x^2\right )^{3/2}}{6 c x^6}+\frac {\text {Subst}\left (\int \frac {\left (\frac {3}{2} a (4 b c-a d)+3 b^2 c x\right ) \sqrt {c+d x}}{x^3} \, dx,x,x^2\right )}{6 c} \\ & = -\frac {a^2 \left (c+d x^2\right )^{3/2}}{6 c x^6}-\frac {a (4 b c-a d) \left (c+d x^2\right )^{3/2}}{8 c^2 x^4}+\frac {\left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \text {Subst}\left (\int \frac {\sqrt {c+d x}}{x^2} \, dx,x,x^2\right )}{16 c^2} \\ & = -\frac {\left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \sqrt {c+d x^2}}{16 c^2 x^2}-\frac {a^2 \left (c+d x^2\right )^{3/2}}{6 c x^6}-\frac {a (4 b c-a d) \left (c+d x^2\right )^{3/2}}{8 c^2 x^4}+\frac {\left (d \left (8 b^2 c^2-4 a b c d+a^2 d^2\right )\right ) \text {Subst}\left (\int \frac {1}{x \sqrt {c+d x}} \, dx,x,x^2\right )}{32 c^2} \\ & = -\frac {\left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \sqrt {c+d x^2}}{16 c^2 x^2}-\frac {a^2 \left (c+d x^2\right )^{3/2}}{6 c x^6}-\frac {a (4 b c-a d) \left (c+d x^2\right )^{3/2}}{8 c^2 x^4}+\frac {\left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \text {Subst}\left (\int \frac {1}{-\frac {c}{d}+\frac {x^2}{d}} \, dx,x,\sqrt {c+d x^2}\right )}{16 c^2} \\ & = -\frac {\left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \sqrt {c+d x^2}}{16 c^2 x^2}-\frac {a^2 \left (c+d x^2\right )^{3/2}}{6 c x^6}-\frac {a (4 b c-a d) \left (c+d x^2\right )^{3/2}}{8 c^2 x^4}-\frac {d \left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \tanh ^{-1}\left (\frac {\sqrt {c+d x^2}}{\sqrt {c}}\right )}{16 c^{5/2}} \\ \end{align*}
Time = 0.21 (sec) , antiderivative size = 126, normalized size of antiderivative = 0.85 \[ \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^7} \, dx=-\frac {\sqrt {c+d x^2} \left (24 b^2 c^2 x^4+12 a b c x^2 \left (2 c+d x^2\right )+a^2 \left (8 c^2+2 c d x^2-3 d^2 x^4\right )\right )}{48 c^2 x^6}-\frac {d \left (8 b^2 c^2-4 a b c d+a^2 d^2\right ) \text {arctanh}\left (\frac {\sqrt {c+d x^2}}{\sqrt {c}}\right )}{16 c^{5/2}} \]
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Time = 2.91 (sec) , antiderivative size = 117, normalized size of antiderivative = 0.79
method | result | size |
pseudoelliptic | \(-\frac {\frac {3 d \,x^{6} \left (a^{2} d^{2}-4 a b c d +8 b^{2} c^{2}\right ) \operatorname {arctanh}\left (\frac {\sqrt {d \,x^{2}+c}}{\sqrt {c}}\right )}{8}+\sqrt {d \,x^{2}+c}\, \left (\left (3 b^{2} x^{4}+3 a b \,x^{2}+a^{2}\right ) c^{\frac {5}{2}}-\frac {3 x^{2} \left (\left (-4 b \,x^{2}-\frac {2 a}{3}\right ) c^{\frac {3}{2}}+a \sqrt {c}\, d \,x^{2}\right ) d a}{8}\right )}{6 c^{\frac {5}{2}} x^{6}}\) | \(117\) |
risch | \(-\frac {\sqrt {d \,x^{2}+c}\, \left (-3 a^{2} d^{2} x^{4}+12 x^{4} a b c d +24 b^{2} c^{2} x^{4}+2 a^{2} c d \,x^{2}+24 a b \,c^{2} x^{2}+8 a^{2} c^{2}\right )}{48 x^{6} c^{2}}-\frac {\left (a^{2} d^{2}-4 a b c d +8 b^{2} c^{2}\right ) d \ln \left (\frac {2 c +2 \sqrt {c}\, \sqrt {d \,x^{2}+c}}{x}\right )}{16 c^{\frac {5}{2}}}\) | \(130\) |
default | \(a^{2} \left (-\frac {\left (d \,x^{2}+c \right )^{\frac {3}{2}}}{6 c \,x^{6}}-\frac {d \left (-\frac {\left (d \,x^{2}+c \right )^{\frac {3}{2}}}{4 c \,x^{4}}-\frac {d \left (-\frac {\left (d \,x^{2}+c \right )^{\frac {3}{2}}}{2 c \,x^{2}}+\frac {d \left (\sqrt {d \,x^{2}+c}-\sqrt {c}\, \ln \left (\frac {2 c +2 \sqrt {c}\, \sqrt {d \,x^{2}+c}}{x}\right )\right )}{2 c}\right )}{4 c}\right )}{2 c}\right )+b^{2} \left (-\frac {\left (d \,x^{2}+c \right )^{\frac {3}{2}}}{2 c \,x^{2}}+\frac {d \left (\sqrt {d \,x^{2}+c}-\sqrt {c}\, \ln \left (\frac {2 c +2 \sqrt {c}\, \sqrt {d \,x^{2}+c}}{x}\right )\right )}{2 c}\right )+2 a b \left (-\frac {\left (d \,x^{2}+c \right )^{\frac {3}{2}}}{4 c \,x^{4}}-\frac {d \left (-\frac {\left (d \,x^{2}+c \right )^{\frac {3}{2}}}{2 c \,x^{2}}+\frac {d \left (\sqrt {d \,x^{2}+c}-\sqrt {c}\, \ln \left (\frac {2 c +2 \sqrt {c}\, \sqrt {d \,x^{2}+c}}{x}\right )\right )}{2 c}\right )}{4 c}\right )\) | \(272\) |
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Time = 0.27 (sec) , antiderivative size = 276, normalized size of antiderivative = 1.85 \[ \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^7} \, dx=\left [\frac {3 \, {\left (8 \, b^{2} c^{2} d - 4 \, a b c d^{2} + a^{2} d^{3}\right )} \sqrt {c} x^{6} \log \left (-\frac {d x^{2} - 2 \, \sqrt {d x^{2} + c} \sqrt {c} + 2 \, c}{x^{2}}\right ) - 2 \, {\left (8 \, a^{2} c^{3} + 3 \, {\left (8 \, b^{2} c^{3} + 4 \, a b c^{2} d - a^{2} c d^{2}\right )} x^{4} + 2 \, {\left (12 \, a b c^{3} + a^{2} c^{2} d\right )} x^{2}\right )} \sqrt {d x^{2} + c}}{96 \, c^{3} x^{6}}, \frac {3 \, {\left (8 \, b^{2} c^{2} d - 4 \, a b c d^{2} + a^{2} d^{3}\right )} \sqrt {-c} x^{6} \arctan \left (\frac {\sqrt {-c}}{\sqrt {d x^{2} + c}}\right ) - {\left (8 \, a^{2} c^{3} + 3 \, {\left (8 \, b^{2} c^{3} + 4 \, a b c^{2} d - a^{2} c d^{2}\right )} x^{4} + 2 \, {\left (12 \, a b c^{3} + a^{2} c^{2} d\right )} x^{2}\right )} \sqrt {d x^{2} + c}}{48 \, c^{3} x^{6}}\right ] \]
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Leaf count of result is larger than twice the leaf count of optimal. 291 vs. \(2 (141) = 282\).
Time = 65.95 (sec) , antiderivative size = 291, normalized size of antiderivative = 1.95 \[ \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^7} \, dx=- \frac {a^{2} c}{6 \sqrt {d} x^{7} \sqrt {\frac {c}{d x^{2}} + 1}} - \frac {5 a^{2} \sqrt {d}}{24 x^{5} \sqrt {\frac {c}{d x^{2}} + 1}} + \frac {a^{2} d^{\frac {3}{2}}}{48 c x^{3} \sqrt {\frac {c}{d x^{2}} + 1}} + \frac {a^{2} d^{\frac {5}{2}}}{16 c^{2} x \sqrt {\frac {c}{d x^{2}} + 1}} - \frac {a^{2} d^{3} \operatorname {asinh}{\left (\frac {\sqrt {c}}{\sqrt {d} x} \right )}}{16 c^{\frac {5}{2}}} - \frac {a b c}{2 \sqrt {d} x^{5} \sqrt {\frac {c}{d x^{2}} + 1}} - \frac {3 a b \sqrt {d}}{4 x^{3} \sqrt {\frac {c}{d x^{2}} + 1}} - \frac {a b d^{\frac {3}{2}}}{4 c x \sqrt {\frac {c}{d x^{2}} + 1}} + \frac {a b d^{2} \operatorname {asinh}{\left (\frac {\sqrt {c}}{\sqrt {d} x} \right )}}{4 c^{\frac {3}{2}}} - \frac {b^{2} \sqrt {d} \sqrt {\frac {c}{d x^{2}} + 1}}{2 x} - \frac {b^{2} d \operatorname {asinh}{\left (\frac {\sqrt {c}}{\sqrt {d} x} \right )}}{2 \sqrt {c}} \]
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Time = 0.20 (sec) , antiderivative size = 247, normalized size of antiderivative = 1.66 \[ \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^7} \, dx=-\frac {b^{2} d \operatorname {arsinh}\left (\frac {c}{\sqrt {c d} {\left | x \right |}}\right )}{2 \, \sqrt {c}} + \frac {a b d^{2} \operatorname {arsinh}\left (\frac {c}{\sqrt {c d} {\left | x \right |}}\right )}{4 \, c^{\frac {3}{2}}} - \frac {a^{2} d^{3} \operatorname {arsinh}\left (\frac {c}{\sqrt {c d} {\left | x \right |}}\right )}{16 \, c^{\frac {5}{2}}} + \frac {\sqrt {d x^{2} + c} b^{2} d}{2 \, c} - \frac {\sqrt {d x^{2} + c} a b d^{2}}{4 \, c^{2}} + \frac {\sqrt {d x^{2} + c} a^{2} d^{3}}{16 \, c^{3}} - \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} b^{2}}{2 \, c x^{2}} + \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} a b d}{4 \, c^{2} x^{2}} - \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} a^{2} d^{2}}{16 \, c^{3} x^{2}} - \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} a b}{2 \, c x^{4}} + \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} a^{2} d}{8 \, c^{2} x^{4}} - \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} a^{2}}{6 \, c x^{6}} \]
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Time = 0.29 (sec) , antiderivative size = 222, normalized size of antiderivative = 1.49 \[ \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^7} \, dx=\frac {\frac {3 \, {\left (8 \, b^{2} c^{2} d^{2} - 4 \, a b c d^{3} + a^{2} d^{4}\right )} \arctan \left (\frac {\sqrt {d x^{2} + c}}{\sqrt {-c}}\right )}{\sqrt {-c} c^{2}} - \frac {24 \, {\left (d x^{2} + c\right )}^{\frac {5}{2}} b^{2} c^{2} d^{2} - 48 \, {\left (d x^{2} + c\right )}^{\frac {3}{2}} b^{2} c^{3} d^{2} + 24 \, \sqrt {d x^{2} + c} b^{2} c^{4} d^{2} + 12 \, {\left (d x^{2} + c\right )}^{\frac {5}{2}} a b c d^{3} - 12 \, \sqrt {d x^{2} + c} a b c^{3} d^{3} - 3 \, {\left (d x^{2} + c\right )}^{\frac {5}{2}} a^{2} d^{4} + 8 \, {\left (d x^{2} + c\right )}^{\frac {3}{2}} a^{2} c d^{4} + 3 \, \sqrt {d x^{2} + c} a^{2} c^{2} d^{4}}{c^{2} d^{3} x^{6}}}{48 \, d} \]
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Time = 6.24 (sec) , antiderivative size = 193, normalized size of antiderivative = 1.30 \[ \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^7} \, dx=\frac {\sqrt {d\,x^2+c}\,\left (\frac {a^2\,d^3}{16}-\frac {a\,b\,c\,d^2}{4}+\frac {b^2\,c^2\,d}{2}\right )+\frac {{\left (d\,x^2+c\right )}^{3/2}\,\left (a^2\,d^3-6\,b^2\,c^2\,d\right )}{6\,c}+\frac {{\left (d\,x^2+c\right )}^{5/2}\,\left (-a^2\,d^3+4\,a\,b\,c\,d^2+8\,b^2\,c^2\,d\right )}{16\,c^2}}{3\,c\,{\left (d\,x^2+c\right )}^2-3\,c^2\,\left (d\,x^2+c\right )-{\left (d\,x^2+c\right )}^3+c^3}-\frac {d\,\mathrm {atanh}\left (\frac {\sqrt {d\,x^2+c}}{\sqrt {c}}\right )\,\left (a^2\,d^2-4\,a\,b\,c\,d+8\,b^2\,c^2\right )}{16\,c^{5/2}} \]
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