Integrand size = 23, antiderivative size = 403 \[ \int \frac {1}{(d+e x)^{7/2} \sqrt {b x+c x^2}} \, dx=-\frac {2 e \sqrt {b x+c x^2}}{5 d (c d-b e) (d+e x)^{5/2}}-\frac {8 e (2 c d-b e) \sqrt {b x+c x^2}}{15 d^2 (c d-b e)^2 (d+e x)^{3/2}}-\frac {2 e \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {b x+c x^2}}{15 d^3 (c d-b e)^3 \sqrt {d+e x}}+\frac {2 \sqrt {-b} \sqrt {c} \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {x} \sqrt {1+\frac {c x}{b}} \sqrt {d+e x} E\left (\arcsin \left (\frac {\sqrt {c} \sqrt {x}}{\sqrt {-b}}\right )|\frac {b e}{c d}\right )}{15 d^3 (c d-b e)^3 \sqrt {1+\frac {e x}{d}} \sqrt {b x+c x^2}}-\frac {8 \sqrt {-b} \sqrt {c} (2 c d-b e) \sqrt {x} \sqrt {1+\frac {c x}{b}} \sqrt {1+\frac {e x}{d}} \operatorname {EllipticF}\left (\arcsin \left (\frac {\sqrt {c} \sqrt {x}}{\sqrt {-b}}\right ),\frac {b e}{c d}\right )}{15 d^2 (c d-b e)^2 \sqrt {d+e x} \sqrt {b x+c x^2}} \]
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Time = 0.34 (sec) , antiderivative size = 403, normalized size of antiderivative = 1.00, number of steps used = 10, number of rules used = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.348, Rules used = {758, 848, 857, 729, 113, 111, 118, 117} \[ \int \frac {1}{(d+e x)^{7/2} \sqrt {b x+c x^2}} \, dx=\frac {2 \sqrt {-b} \sqrt {c} \sqrt {x} \sqrt {\frac {c x}{b}+1} \sqrt {d+e x} \left (8 b^2 e^2-23 b c d e+23 c^2 d^2\right ) E\left (\arcsin \left (\frac {\sqrt {c} \sqrt {x}}{\sqrt {-b}}\right )|\frac {b e}{c d}\right )}{15 d^3 \sqrt {b x+c x^2} \sqrt {\frac {e x}{d}+1} (c d-b e)^3}-\frac {8 \sqrt {-b} \sqrt {c} \sqrt {x} \sqrt {\frac {c x}{b}+1} \sqrt {\frac {e x}{d}+1} (2 c d-b e) \operatorname {EllipticF}\left (\arcsin \left (\frac {\sqrt {c} \sqrt {x}}{\sqrt {-b}}\right ),\frac {b e}{c d}\right )}{15 d^2 \sqrt {b x+c x^2} \sqrt {d+e x} (c d-b e)^2}-\frac {2 e \sqrt {b x+c x^2} \left (8 b^2 e^2-23 b c d e+23 c^2 d^2\right )}{15 d^3 \sqrt {d+e x} (c d-b e)^3}-\frac {8 e \sqrt {b x+c x^2} (2 c d-b e)}{15 d^2 (d+e x)^{3/2} (c d-b e)^2}-\frac {2 e \sqrt {b x+c x^2}}{5 d (d+e x)^{5/2} (c d-b e)} \]
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Rule 111
Rule 113
Rule 117
Rule 118
Rule 729
Rule 758
Rule 848
Rule 857
Rubi steps \begin{align*} \text {integral}& = -\frac {2 e \sqrt {b x+c x^2}}{5 d (c d-b e) (d+e x)^{5/2}}-\frac {2 \int \frac {\frac {1}{2} (-5 c d+4 b e)+\frac {3 c e x}{2}}{(d+e x)^{5/2} \sqrt {b x+c x^2}} \, dx}{5 d (c d-b e)} \\ & = -\frac {2 e \sqrt {b x+c x^2}}{5 d (c d-b e) (d+e x)^{5/2}}-\frac {8 e (2 c d-b e) \sqrt {b x+c x^2}}{15 d^2 (c d-b e)^2 (d+e x)^{3/2}}+\frac {4 \int \frac {\frac {1}{4} \left (15 c^2 d^2-19 b c d e+8 b^2 e^2\right )-c e (2 c d-b e) x}{(d+e x)^{3/2} \sqrt {b x+c x^2}} \, dx}{15 d^2 (c d-b e)^2} \\ & = -\frac {2 e \sqrt {b x+c x^2}}{5 d (c d-b e) (d+e x)^{5/2}}-\frac {8 e (2 c d-b e) \sqrt {b x+c x^2}}{15 d^2 (c d-b e)^2 (d+e x)^{3/2}}-\frac {2 e \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {b x+c x^2}}{15 d^3 (c d-b e)^3 \sqrt {d+e x}}-\frac {8 \int \frac {-\frac {1}{8} c d \left (15 c^2 d^2-11 b c d e+4 b^2 e^2\right )-\frac {1}{8} c e \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) x}{\sqrt {d+e x} \sqrt {b x+c x^2}} \, dx}{15 d^3 (c d-b e)^3} \\ & = -\frac {2 e \sqrt {b x+c x^2}}{5 d (c d-b e) (d+e x)^{5/2}}-\frac {8 e (2 c d-b e) \sqrt {b x+c x^2}}{15 d^2 (c d-b e)^2 (d+e x)^{3/2}}-\frac {2 e \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {b x+c x^2}}{15 d^3 (c d-b e)^3 \sqrt {d+e x}}-\frac {(4 c (2 c d-b e)) \int \frac {1}{\sqrt {d+e x} \sqrt {b x+c x^2}} \, dx}{15 d^2 (c d-b e)^2}+\frac {\left (c \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right )\right ) \int \frac {\sqrt {d+e x}}{\sqrt {b x+c x^2}} \, dx}{15 d^3 (c d-b e)^3} \\ & = -\frac {2 e \sqrt {b x+c x^2}}{5 d (c d-b e) (d+e x)^{5/2}}-\frac {8 e (2 c d-b e) \sqrt {b x+c x^2}}{15 d^2 (c d-b e)^2 (d+e x)^{3/2}}-\frac {2 e \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {b x+c x^2}}{15 d^3 (c d-b e)^3 \sqrt {d+e x}}-\frac {\left (4 c (2 c d-b e) \sqrt {x} \sqrt {b+c x}\right ) \int \frac {1}{\sqrt {x} \sqrt {b+c x} \sqrt {d+e x}} \, dx}{15 d^2 (c d-b e)^2 \sqrt {b x+c x^2}}+\frac {\left (c \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {x} \sqrt {b+c x}\right ) \int \frac {\sqrt {d+e x}}{\sqrt {x} \sqrt {b+c x}} \, dx}{15 d^3 (c d-b e)^3 \sqrt {b x+c x^2}} \\ & = -\frac {2 e \sqrt {b x+c x^2}}{5 d (c d-b e) (d+e x)^{5/2}}-\frac {8 e (2 c d-b e) \sqrt {b x+c x^2}}{15 d^2 (c d-b e)^2 (d+e x)^{3/2}}-\frac {2 e \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {b x+c x^2}}{15 d^3 (c d-b e)^3 \sqrt {d+e x}}+\frac {\left (c \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {x} \sqrt {1+\frac {c x}{b}} \sqrt {d+e x}\right ) \int \frac {\sqrt {1+\frac {e x}{d}}}{\sqrt {x} \sqrt {1+\frac {c x}{b}}} \, dx}{15 d^3 (c d-b e)^3 \sqrt {1+\frac {e x}{d}} \sqrt {b x+c x^2}}-\frac {\left (4 c (2 c d-b e) \sqrt {x} \sqrt {1+\frac {c x}{b}} \sqrt {1+\frac {e x}{d}}\right ) \int \frac {1}{\sqrt {x} \sqrt {1+\frac {c x}{b}} \sqrt {1+\frac {e x}{d}}} \, dx}{15 d^2 (c d-b e)^2 \sqrt {d+e x} \sqrt {b x+c x^2}} \\ & = -\frac {2 e \sqrt {b x+c x^2}}{5 d (c d-b e) (d+e x)^{5/2}}-\frac {8 e (2 c d-b e) \sqrt {b x+c x^2}}{15 d^2 (c d-b e)^2 (d+e x)^{3/2}}-\frac {2 e \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {b x+c x^2}}{15 d^3 (c d-b e)^3 \sqrt {d+e x}}+\frac {2 \sqrt {-b} \sqrt {c} \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {x} \sqrt {1+\frac {c x}{b}} \sqrt {d+e x} E\left (\sin ^{-1}\left (\frac {\sqrt {c} \sqrt {x}}{\sqrt {-b}}\right )|\frac {b e}{c d}\right )}{15 d^3 (c d-b e)^3 \sqrt {1+\frac {e x}{d}} \sqrt {b x+c x^2}}-\frac {8 \sqrt {-b} \sqrt {c} (2 c d-b e) \sqrt {x} \sqrt {1+\frac {c x}{b}} \sqrt {1+\frac {e x}{d}} F\left (\sin ^{-1}\left (\frac {\sqrt {c} \sqrt {x}}{\sqrt {-b}}\right )|\frac {b e}{c d}\right )}{15 d^2 (c d-b e)^2 \sqrt {d+e x} \sqrt {b x+c x^2}} \\ \end{align*}
Result contains complex when optimal does not.
Time = 9.12 (sec) , antiderivative size = 381, normalized size of antiderivative = 0.95 \[ \int \frac {1}{(d+e x)^{7/2} \sqrt {b x+c x^2}} \, dx=-\frac {2 \left (b e x (b+c x) \left (3 d^2 (c d-b e)^2+4 d (c d-b e) (2 c d-b e) (d+e x)+\left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) (d+e x)^2\right )-\sqrt {\frac {b}{c}} c (d+e x)^2 \left (\sqrt {\frac {b}{c}} \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) (b+c x) (d+e x)+i b e \left (23 c^2 d^2-23 b c d e+8 b^2 e^2\right ) \sqrt {1+\frac {b}{c x}} \sqrt {1+\frac {d}{e x}} x^{3/2} E\left (i \text {arcsinh}\left (\frac {\sqrt {\frac {b}{c}}}{\sqrt {x}}\right )|\frac {c d}{b e}\right )+i \left (15 c^3 d^3-34 b c^2 d^2 e+27 b^2 c d e^2-8 b^3 e^3\right ) \sqrt {1+\frac {b}{c x}} \sqrt {1+\frac {d}{e x}} x^{3/2} \operatorname {EllipticF}\left (i \text {arcsinh}\left (\frac {\sqrt {\frac {b}{c}}}{\sqrt {x}}\right ),\frac {c d}{b e}\right )\right )\right )}{15 b d^3 (c d-b e)^3 \sqrt {x (b+c x)} (d+e x)^{5/2}} \]
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Time = 2.54 (sec) , antiderivative size = 639, normalized size of antiderivative = 1.59
method | result | size |
elliptic | \(\frac {\sqrt {x \left (e x +d \right ) \left (c x +b \right )}\, \left (\frac {2 \sqrt {c e \,x^{3}+b e \,x^{2}+c d \,x^{2}+b d x}}{5 d \,e^{2} \left (b e -c d \right ) \left (x +\frac {d}{e}\right )^{3}}+\frac {8 \left (b e -2 c d \right ) \sqrt {c e \,x^{3}+b e \,x^{2}+c d \,x^{2}+b d x}}{15 e \,d^{2} \left (b e -c d \right )^{2} \left (x +\frac {d}{e}\right )^{2}}+\frac {2 \left (c e \,x^{2}+b e x \right ) \left (8 b^{2} e^{2}-23 b c d e +23 c^{2} d^{2}\right )}{15 d^{3} \left (b e -c d \right )^{3} \sqrt {\left (x +\frac {d}{e}\right ) \left (c e \,x^{2}+b e x \right )}}+\frac {2 \left (\frac {4 c \left (b e -2 c d \right )}{15 d^{2} \left (b e -c d \right )^{2}}+\frac {8 b^{2} e^{2}-23 b c d e +23 c^{2} d^{2}}{15 \left (b e -c d \right )^{2} d^{3}}-\frac {b e \left (8 b^{2} e^{2}-23 b c d e +23 c^{2} d^{2}\right )}{15 d^{3} \left (b e -c d \right )^{3}}\right ) b \sqrt {\frac {\left (\frac {b}{c}+x \right ) c}{b}}\, \sqrt {\frac {x +\frac {d}{e}}{-\frac {b}{c}+\frac {d}{e}}}\, \sqrt {-\frac {c x}{b}}\, F\left (\sqrt {\frac {\left (\frac {b}{c}+x \right ) c}{b}}, \sqrt {-\frac {b}{c \left (-\frac {b}{c}+\frac {d}{e}\right )}}\right )}{c \sqrt {c e \,x^{3}+b e \,x^{2}+c d \,x^{2}+b d x}}-\frac {2 e \left (8 b^{2} e^{2}-23 b c d e +23 c^{2} d^{2}\right ) b \sqrt {\frac {\left (\frac {b}{c}+x \right ) c}{b}}\, \sqrt {\frac {x +\frac {d}{e}}{-\frac {b}{c}+\frac {d}{e}}}\, \sqrt {-\frac {c x}{b}}\, \left (\left (-\frac {b}{c}+\frac {d}{e}\right ) E\left (\sqrt {\frac {\left (\frac {b}{c}+x \right ) c}{b}}, \sqrt {-\frac {b}{c \left (-\frac {b}{c}+\frac {d}{e}\right )}}\right )-\frac {d F\left (\sqrt {\frac {\left (\frac {b}{c}+x \right ) c}{b}}, \sqrt {-\frac {b}{c \left (-\frac {b}{c}+\frac {d}{e}\right )}}\right )}{e}\right )}{15 d^{3} \left (b e -c d \right )^{3} \sqrt {c e \,x^{3}+b e \,x^{2}+c d \,x^{2}+b d x}}\right )}{\sqrt {x \left (c x +b \right )}\, \sqrt {e x +d}}\) | \(639\) |
default | \(\text {Expression too large to display}\) | \(1912\) |
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.20 (sec) , antiderivative size = 950, normalized size of antiderivative = 2.36 \[ \int \frac {1}{(d+e x)^{7/2} \sqrt {b x+c x^2}} \, dx=\frac {2 \, {\left ({\left (22 \, c^{3} d^{6} - 33 \, b c^{2} d^{5} e + 27 \, b^{2} c d^{4} e^{2} - 8 \, b^{3} d^{3} e^{3} + {\left (22 \, c^{3} d^{3} e^{3} - 33 \, b c^{2} d^{2} e^{4} + 27 \, b^{2} c d e^{5} - 8 \, b^{3} e^{6}\right )} x^{3} + 3 \, {\left (22 \, c^{3} d^{4} e^{2} - 33 \, b c^{2} d^{3} e^{3} + 27 \, b^{2} c d^{2} e^{4} - 8 \, b^{3} d e^{5}\right )} x^{2} + 3 \, {\left (22 \, c^{3} d^{5} e - 33 \, b c^{2} d^{4} e^{2} + 27 \, b^{2} c d^{3} e^{3} - 8 \, b^{3} d^{2} e^{4}\right )} x\right )} \sqrt {c e} {\rm weierstrassPInverse}\left (\frac {4 \, {\left (c^{2} d^{2} - b c d e + b^{2} e^{2}\right )}}{3 \, c^{2} e^{2}}, -\frac {4 \, {\left (2 \, c^{3} d^{3} - 3 \, b c^{2} d^{2} e - 3 \, b^{2} c d e^{2} + 2 \, b^{3} e^{3}\right )}}{27 \, c^{3} e^{3}}, \frac {3 \, c e x + c d + b e}{3 \, c e}\right ) - 3 \, {\left (23 \, c^{3} d^{5} e - 23 \, b c^{2} d^{4} e^{2} + 8 \, b^{2} c d^{3} e^{3} + {\left (23 \, c^{3} d^{2} e^{4} - 23 \, b c^{2} d e^{5} + 8 \, b^{2} c e^{6}\right )} x^{3} + 3 \, {\left (23 \, c^{3} d^{3} e^{3} - 23 \, b c^{2} d^{2} e^{4} + 8 \, b^{2} c d e^{5}\right )} x^{2} + 3 \, {\left (23 \, c^{3} d^{4} e^{2} - 23 \, b c^{2} d^{3} e^{3} + 8 \, b^{2} c d^{2} e^{4}\right )} x\right )} \sqrt {c e} {\rm weierstrassZeta}\left (\frac {4 \, {\left (c^{2} d^{2} - b c d e + b^{2} e^{2}\right )}}{3 \, c^{2} e^{2}}, -\frac {4 \, {\left (2 \, c^{3} d^{3} - 3 \, b c^{2} d^{2} e - 3 \, b^{2} c d e^{2} + 2 \, b^{3} e^{3}\right )}}{27 \, c^{3} e^{3}}, {\rm weierstrassPInverse}\left (\frac {4 \, {\left (c^{2} d^{2} - b c d e + b^{2} e^{2}\right )}}{3 \, c^{2} e^{2}}, -\frac {4 \, {\left (2 \, c^{3} d^{3} - 3 \, b c^{2} d^{2} e - 3 \, b^{2} c d e^{2} + 2 \, b^{3} e^{3}\right )}}{27 \, c^{3} e^{3}}, \frac {3 \, c e x + c d + b e}{3 \, c e}\right )\right ) - 3 \, {\left (34 \, c^{3} d^{4} e^{2} - 41 \, b c^{2} d^{3} e^{3} + 15 \, b^{2} c d^{2} e^{4} + {\left (23 \, c^{3} d^{2} e^{4} - 23 \, b c^{2} d e^{5} + 8 \, b^{2} c e^{6}\right )} x^{2} + 2 \, {\left (27 \, c^{3} d^{3} e^{3} - 29 \, b c^{2} d^{2} e^{4} + 10 \, b^{2} c d e^{5}\right )} x\right )} \sqrt {c x^{2} + b x} \sqrt {e x + d}\right )}}{45 \, {\left (c^{4} d^{9} e - 3 \, b c^{3} d^{8} e^{2} + 3 \, b^{2} c^{2} d^{7} e^{3} - b^{3} c d^{6} e^{4} + {\left (c^{4} d^{6} e^{4} - 3 \, b c^{3} d^{5} e^{5} + 3 \, b^{2} c^{2} d^{4} e^{6} - b^{3} c d^{3} e^{7}\right )} x^{3} + 3 \, {\left (c^{4} d^{7} e^{3} - 3 \, b c^{3} d^{6} e^{4} + 3 \, b^{2} c^{2} d^{5} e^{5} - b^{3} c d^{4} e^{6}\right )} x^{2} + 3 \, {\left (c^{4} d^{8} e^{2} - 3 \, b c^{3} d^{7} e^{3} + 3 \, b^{2} c^{2} d^{6} e^{4} - b^{3} c d^{5} e^{5}\right )} x\right )}} \]
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\[ \int \frac {1}{(d+e x)^{7/2} \sqrt {b x+c x^2}} \, dx=\int \frac {1}{\sqrt {x \left (b + c x\right )} \left (d + e x\right )^{\frac {7}{2}}}\, dx \]
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\[ \int \frac {1}{(d+e x)^{7/2} \sqrt {b x+c x^2}} \, dx=\int { \frac {1}{\sqrt {c x^{2} + b x} {\left (e x + d\right )}^{\frac {7}{2}}} \,d x } \]
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\[ \int \frac {1}{(d+e x)^{7/2} \sqrt {b x+c x^2}} \, dx=\int { \frac {1}{\sqrt {c x^{2} + b x} {\left (e x + d\right )}^{\frac {7}{2}}} \,d x } \]
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Timed out. \[ \int \frac {1}{(d+e x)^{7/2} \sqrt {b x+c x^2}} \, dx=\int \frac {1}{\sqrt {c\,x^2+b\,x}\,{\left (d+e\,x\right )}^{7/2}} \,d x \]
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