Integrand size = 19, antiderivative size = 102 \[ \int \frac {1}{x^3 \left (b x^2+c x^4\right )^{3/2}} \, dx=\frac {1}{b x^4 \sqrt {b x^2+c x^4}}-\frac {6 \sqrt {b x^2+c x^4}}{5 b^2 x^6}+\frac {8 c \sqrt {b x^2+c x^4}}{5 b^3 x^4}-\frac {16 c^2 \sqrt {b x^2+c x^4}}{5 b^4 x^2} \]
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Time = 0.11 (sec) , antiderivative size = 102, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.158, Rules used = {2040, 2041, 2039} \[ \int \frac {1}{x^3 \left (b x^2+c x^4\right )^{3/2}} \, dx=-\frac {16 c^2 \sqrt {b x^2+c x^4}}{5 b^4 x^2}+\frac {8 c \sqrt {b x^2+c x^4}}{5 b^3 x^4}-\frac {6 \sqrt {b x^2+c x^4}}{5 b^2 x^6}+\frac {1}{b x^4 \sqrt {b x^2+c x^4}} \]
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Rule 2039
Rule 2040
Rule 2041
Rubi steps \begin{align*} \text {integral}& = \frac {1}{b x^4 \sqrt {b x^2+c x^4}}+\frac {6 \int \frac {1}{x^5 \sqrt {b x^2+c x^4}} \, dx}{b} \\ & = \frac {1}{b x^4 \sqrt {b x^2+c x^4}}-\frac {6 \sqrt {b x^2+c x^4}}{5 b^2 x^6}-\frac {(24 c) \int \frac {1}{x^3 \sqrt {b x^2+c x^4}} \, dx}{5 b^2} \\ & = \frac {1}{b x^4 \sqrt {b x^2+c x^4}}-\frac {6 \sqrt {b x^2+c x^4}}{5 b^2 x^6}+\frac {8 c \sqrt {b x^2+c x^4}}{5 b^3 x^4}+\frac {\left (16 c^2\right ) \int \frac {1}{x \sqrt {b x^2+c x^4}} \, dx}{5 b^3} \\ & = \frac {1}{b x^4 \sqrt {b x^2+c x^4}}-\frac {6 \sqrt {b x^2+c x^4}}{5 b^2 x^6}+\frac {8 c \sqrt {b x^2+c x^4}}{5 b^3 x^4}-\frac {16 c^2 \sqrt {b x^2+c x^4}}{5 b^4 x^2} \\ \end{align*}
Time = 0.09 (sec) , antiderivative size = 57, normalized size of antiderivative = 0.56 \[ \int \frac {1}{x^3 \left (b x^2+c x^4\right )^{3/2}} \, dx=\frac {-b^3+2 b^2 c x^2-8 b c^2 x^4-16 c^3 x^6}{5 b^4 x^4 \sqrt {x^2 \left (b+c x^2\right )}} \]
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Time = 0.11 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.51
method | result | size |
pseudoelliptic | \(-\frac {16 c^{3} x^{6}+8 b \,c^{2} x^{4}-2 b^{2} c \,x^{2}+b^{3}}{5 x^{4} b^{4} \sqrt {x^{2} \left (c \,x^{2}+b \right )}}\) | \(52\) |
gosper | \(-\frac {\left (c \,x^{2}+b \right ) \left (16 c^{3} x^{6}+8 b \,c^{2} x^{4}-2 b^{2} c \,x^{2}+b^{3}\right )}{5 x^{2} b^{4} \left (c \,x^{4}+b \,x^{2}\right )^{\frac {3}{2}}}\) | \(59\) |
default | \(-\frac {\left (c \,x^{2}+b \right ) \left (16 c^{3} x^{6}+8 b \,c^{2} x^{4}-2 b^{2} c \,x^{2}+b^{3}\right )}{5 x^{2} b^{4} \left (c \,x^{4}+b \,x^{2}\right )^{\frac {3}{2}}}\) | \(59\) |
trager | \(-\frac {\left (16 c^{3} x^{6}+8 b \,c^{2} x^{4}-2 b^{2} c \,x^{2}+b^{3}\right ) \sqrt {c \,x^{4}+b \,x^{2}}}{5 \left (c \,x^{2}+b \right ) b^{4} x^{6}}\) | \(61\) |
risch | \(-\frac {\left (c \,x^{2}+b \right ) \left (11 c^{2} x^{4}-3 b c \,x^{2}+b^{2}\right )}{5 b^{4} x^{4} \sqrt {x^{2} \left (c \,x^{2}+b \right )}}-\frac {x^{2} c^{3}}{b^{4} \sqrt {x^{2} \left (c \,x^{2}+b \right )}}\) | \(73\) |
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Time = 0.25 (sec) , antiderivative size = 63, normalized size of antiderivative = 0.62 \[ \int \frac {1}{x^3 \left (b x^2+c x^4\right )^{3/2}} \, dx=-\frac {{\left (16 \, c^{3} x^{6} + 8 \, b c^{2} x^{4} - 2 \, b^{2} c x^{2} + b^{3}\right )} \sqrt {c x^{4} + b x^{2}}}{5 \, {\left (b^{4} c x^{8} + b^{5} x^{6}\right )}} \]
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\[ \int \frac {1}{x^3 \left (b x^2+c x^4\right )^{3/2}} \, dx=\int \frac {1}{x^{3} \left (x^{2} \left (b + c x^{2}\right )\right )^{\frac {3}{2}}}\, dx \]
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Time = 0.28 (sec) , antiderivative size = 89, normalized size of antiderivative = 0.87 \[ \int \frac {1}{x^3 \left (b x^2+c x^4\right )^{3/2}} \, dx=-\frac {16 \, c^{3} x^{2}}{5 \, \sqrt {c x^{4} + b x^{2}} b^{4}} - \frac {8 \, c^{2}}{5 \, \sqrt {c x^{4} + b x^{2}} b^{3}} + \frac {2 \, c}{5 \, \sqrt {c x^{4} + b x^{2}} b^{2} x^{2}} - \frac {1}{5 \, \sqrt {c x^{4} + b x^{2}} b x^{4}} \]
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Time = 0.30 (sec) , antiderivative size = 169, normalized size of antiderivative = 1.66 \[ \int \frac {1}{x^3 \left (b x^2+c x^4\right )^{3/2}} \, dx=-\frac {c^{3} x}{\sqrt {c x^{2} + b} b^{4} \mathrm {sgn}\left (x\right )} + \frac {2 \, {\left (5 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + b}\right )}^{8} c^{\frac {5}{2}} - 30 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + b}\right )}^{6} b c^{\frac {5}{2}} + 80 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + b}\right )}^{4} b^{2} c^{\frac {5}{2}} - 50 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + b}\right )}^{2} b^{3} c^{\frac {5}{2}} + 11 \, b^{4} c^{\frac {5}{2}}\right )}}{5 \, {\left ({\left (\sqrt {c} x - \sqrt {c x^{2} + b}\right )}^{2} - b\right )}^{5} b^{3} \mathrm {sgn}\left (x\right )} \]
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Time = 13.05 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.59 \[ \int \frac {1}{x^3 \left (b x^2+c x^4\right )^{3/2}} \, dx=-\frac {\sqrt {c\,x^4+b\,x^2}\,\left (b^3-2\,b^2\,c\,x^2+8\,b\,c^2\,x^4+16\,c^3\,x^6\right )}{5\,b^4\,x^6\,\left (c\,x^2+b\right )} \]
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