Integrand size = 19, antiderivative size = 198 \[ \int \frac {1}{(d+e x)^4 \sqrt {a+c x^2}} \, dx=-\frac {e \sqrt {a+c x^2}}{3 \left (c d^2+a e^2\right ) (d+e x)^3}-\frac {5 c d e \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^2 (d+e x)^2}-\frac {c e \left (11 c d^2-4 a e^2\right ) \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^3 (d+e x)}-\frac {c^2 d \left (2 c d^2-3 a e^2\right ) \text {arctanh}\left (\frac {a e-c d x}{\sqrt {c d^2+a e^2} \sqrt {a+c x^2}}\right )}{2 \left (c d^2+a e^2\right )^{7/2}} \]
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Time = 0.10 (sec) , antiderivative size = 198, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.263, Rules used = {759, 849, 821, 739, 212} \[ \int \frac {1}{(d+e x)^4 \sqrt {a+c x^2}} \, dx=-\frac {c^2 d \left (2 c d^2-3 a e^2\right ) \text {arctanh}\left (\frac {a e-c d x}{\sqrt {a+c x^2} \sqrt {a e^2+c d^2}}\right )}{2 \left (a e^2+c d^2\right )^{7/2}}-\frac {c e \sqrt {a+c x^2} \left (11 c d^2-4 a e^2\right )}{6 (d+e x) \left (a e^2+c d^2\right )^3}-\frac {5 c d e \sqrt {a+c x^2}}{6 (d+e x)^2 \left (a e^2+c d^2\right )^2}-\frac {e \sqrt {a+c x^2}}{3 (d+e x)^3 \left (a e^2+c d^2\right )} \]
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Rule 212
Rule 739
Rule 759
Rule 821
Rule 849
Rubi steps \begin{align*} \text {integral}& = -\frac {e \sqrt {a+c x^2}}{3 \left (c d^2+a e^2\right ) (d+e x)^3}-\frac {c \int \frac {-3 d+2 e x}{(d+e x)^3 \sqrt {a+c x^2}} \, dx}{3 \left (c d^2+a e^2\right )} \\ & = -\frac {e \sqrt {a+c x^2}}{3 \left (c d^2+a e^2\right ) (d+e x)^3}-\frac {5 c d e \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^2 (d+e x)^2}+\frac {c \int \frac {2 \left (3 c d^2-2 a e^2\right )-5 c d e x}{(d+e x)^2 \sqrt {a+c x^2}} \, dx}{6 \left (c d^2+a e^2\right )^2} \\ & = -\frac {e \sqrt {a+c x^2}}{3 \left (c d^2+a e^2\right ) (d+e x)^3}-\frac {5 c d e \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^2 (d+e x)^2}-\frac {c e \left (11 c d^2-4 a e^2\right ) \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^3 (d+e x)}+\frac {\left (c^2 d \left (2 c d^2-3 a e^2\right )\right ) \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx}{2 \left (c d^2+a e^2\right )^3} \\ & = -\frac {e \sqrt {a+c x^2}}{3 \left (c d^2+a e^2\right ) (d+e x)^3}-\frac {5 c d e \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^2 (d+e x)^2}-\frac {c e \left (11 c d^2-4 a e^2\right ) \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^3 (d+e x)}-\frac {\left (c^2 d \left (2 c d^2-3 a e^2\right )\right ) \text {Subst}\left (\int \frac {1}{c d^2+a e^2-x^2} \, dx,x,\frac {a e-c d x}{\sqrt {a+c x^2}}\right )}{2 \left (c d^2+a e^2\right )^3} \\ & = -\frac {e \sqrt {a+c x^2}}{3 \left (c d^2+a e^2\right ) (d+e x)^3}-\frac {5 c d e \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^2 (d+e x)^2}-\frac {c e \left (11 c d^2-4 a e^2\right ) \sqrt {a+c x^2}}{6 \left (c d^2+a e^2\right )^3 (d+e x)}-\frac {c^2 d \left (2 c d^2-3 a e^2\right ) \tanh ^{-1}\left (\frac {a e-c d x}{\sqrt {c d^2+a e^2} \sqrt {a+c x^2}}\right )}{2 \left (c d^2+a e^2\right )^{7/2}} \\ \end{align*}
Time = 10.20 (sec) , antiderivative size = 209, normalized size of antiderivative = 1.06 \[ \int \frac {1}{(d+e x)^4 \sqrt {a+c x^2}} \, dx=\frac {-e \sqrt {c d^2+a e^2} \sqrt {a+c x^2} \left (2 \left (c d^2+a e^2\right )^2+5 c d \left (c d^2+a e^2\right ) (d+e x)+c \left (11 c d^2-4 a e^2\right ) (d+e x)^2\right )+3 c^2 d \left (2 c d^2-3 a e^2\right ) (d+e x)^3 \log (d+e x)-3 c^2 d \left (2 c d^2-3 a e^2\right ) (d+e x)^3 \log \left (a e-c d x+\sqrt {c d^2+a e^2} \sqrt {a+c x^2}\right )}{6 \left (c d^2+a e^2\right )^{7/2} (d+e x)^3} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(761\) vs. \(2(178)=356\).
Time = 2.11 (sec) , antiderivative size = 762, normalized size of antiderivative = 3.85
method | result | size |
default | \(\frac {-\frac {e^{2} \sqrt {c \left (x +\frac {d}{e}\right )^{2}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{3 \left (e^{2} a +c \,d^{2}\right ) \left (x +\frac {d}{e}\right )^{3}}+\frac {5 c d e \left (-\frac {e^{2} \sqrt {c \left (x +\frac {d}{e}\right )^{2}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{2 \left (e^{2} a +c \,d^{2}\right ) \left (x +\frac {d}{e}\right )^{2}}+\frac {3 c d e \left (-\frac {e^{2} \sqrt {c \left (x +\frac {d}{e}\right )^{2}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{\left (e^{2} a +c \,d^{2}\right ) \left (x +\frac {d}{e}\right )}-\frac {c d e \ln \left (\frac {\frac {2 e^{2} a +2 c \,d^{2}}{e^{2}}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+2 \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}\, \sqrt {c \left (x +\frac {d}{e}\right )^{2}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{x +\frac {d}{e}}\right )}{\left (e^{2} a +c \,d^{2}\right ) \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}}\right )}{2 \left (e^{2} a +c \,d^{2}\right )}+\frac {c \,e^{2} \ln \left (\frac {\frac {2 e^{2} a +2 c \,d^{2}}{e^{2}}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+2 \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}\, \sqrt {c \left (x +\frac {d}{e}\right )^{2}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{x +\frac {d}{e}}\right )}{2 \left (e^{2} a +c \,d^{2}\right ) \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}}\right )}{3 \left (e^{2} a +c \,d^{2}\right )}-\frac {2 c \,e^{2} \left (-\frac {e^{2} \sqrt {c \left (x +\frac {d}{e}\right )^{2}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{\left (e^{2} a +c \,d^{2}\right ) \left (x +\frac {d}{e}\right )}-\frac {c d e \ln \left (\frac {\frac {2 e^{2} a +2 c \,d^{2}}{e^{2}}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+2 \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}\, \sqrt {c \left (x +\frac {d}{e}\right )^{2}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{x +\frac {d}{e}}\right )}{\left (e^{2} a +c \,d^{2}\right ) \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}}\right )}{3 \left (e^{2} a +c \,d^{2}\right )}}{e^{4}}\) | \(762\) |
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Leaf count of result is larger than twice the leaf count of optimal. 556 vs. \(2 (179) = 358\).
Time = 0.62 (sec) , antiderivative size = 1139, normalized size of antiderivative = 5.75 \[ \int \frac {1}{(d+e x)^4 \sqrt {a+c x^2}} \, dx=\left [-\frac {3 \, {\left (2 \, c^{3} d^{6} - 3 \, a c^{2} d^{4} e^{2} + {\left (2 \, c^{3} d^{3} e^{3} - 3 \, a c^{2} d e^{5}\right )} x^{3} + 3 \, {\left (2 \, c^{3} d^{4} e^{2} - 3 \, a c^{2} d^{2} e^{4}\right )} x^{2} + 3 \, {\left (2 \, c^{3} d^{5} e - 3 \, a c^{2} d^{3} e^{3}\right )} x\right )} \sqrt {c d^{2} + a e^{2}} \log \left (\frac {2 \, a c d e x - a c d^{2} - 2 \, a^{2} e^{2} - {\left (2 \, c^{2} d^{2} + a c e^{2}\right )} x^{2} + 2 \, \sqrt {c d^{2} + a e^{2}} {\left (c d x - a e\right )} \sqrt {c x^{2} + a}}{e^{2} x^{2} + 2 \, d e x + d^{2}}\right ) + 2 \, {\left (18 \, c^{3} d^{6} e + 23 \, a c^{2} d^{4} e^{3} + 7 \, a^{2} c d^{2} e^{5} + 2 \, a^{3} e^{7} + {\left (11 \, c^{3} d^{4} e^{3} + 7 \, a c^{2} d^{2} e^{5} - 4 \, a^{2} c e^{7}\right )} x^{2} + 3 \, {\left (9 \, c^{3} d^{5} e^{2} + 8 \, a c^{2} d^{3} e^{4} - a^{2} c d e^{6}\right )} x\right )} \sqrt {c x^{2} + a}}{12 \, {\left (c^{4} d^{11} + 4 \, a c^{3} d^{9} e^{2} + 6 \, a^{2} c^{2} d^{7} e^{4} + 4 \, a^{3} c d^{5} e^{6} + a^{4} d^{3} e^{8} + {\left (c^{4} d^{8} e^{3} + 4 \, a c^{3} d^{6} e^{5} + 6 \, a^{2} c^{2} d^{4} e^{7} + 4 \, a^{3} c d^{2} e^{9} + a^{4} e^{11}\right )} x^{3} + 3 \, {\left (c^{4} d^{9} e^{2} + 4 \, a c^{3} d^{7} e^{4} + 6 \, a^{2} c^{2} d^{5} e^{6} + 4 \, a^{3} c d^{3} e^{8} + a^{4} d e^{10}\right )} x^{2} + 3 \, {\left (c^{4} d^{10} e + 4 \, a c^{3} d^{8} e^{3} + 6 \, a^{2} c^{2} d^{6} e^{5} + 4 \, a^{3} c d^{4} e^{7} + a^{4} d^{2} e^{9}\right )} x\right )}}, -\frac {3 \, {\left (2 \, c^{3} d^{6} - 3 \, a c^{2} d^{4} e^{2} + {\left (2 \, c^{3} d^{3} e^{3} - 3 \, a c^{2} d e^{5}\right )} x^{3} + 3 \, {\left (2 \, c^{3} d^{4} e^{2} - 3 \, a c^{2} d^{2} e^{4}\right )} x^{2} + 3 \, {\left (2 \, c^{3} d^{5} e - 3 \, a c^{2} d^{3} e^{3}\right )} x\right )} \sqrt {-c d^{2} - a e^{2}} \arctan \left (\frac {\sqrt {-c d^{2} - a e^{2}} {\left (c d x - a e\right )} \sqrt {c x^{2} + a}}{a c d^{2} + a^{2} e^{2} + {\left (c^{2} d^{2} + a c e^{2}\right )} x^{2}}\right ) + {\left (18 \, c^{3} d^{6} e + 23 \, a c^{2} d^{4} e^{3} + 7 \, a^{2} c d^{2} e^{5} + 2 \, a^{3} e^{7} + {\left (11 \, c^{3} d^{4} e^{3} + 7 \, a c^{2} d^{2} e^{5} - 4 \, a^{2} c e^{7}\right )} x^{2} + 3 \, {\left (9 \, c^{3} d^{5} e^{2} + 8 \, a c^{2} d^{3} e^{4} - a^{2} c d e^{6}\right )} x\right )} \sqrt {c x^{2} + a}}{6 \, {\left (c^{4} d^{11} + 4 \, a c^{3} d^{9} e^{2} + 6 \, a^{2} c^{2} d^{7} e^{4} + 4 \, a^{3} c d^{5} e^{6} + a^{4} d^{3} e^{8} + {\left (c^{4} d^{8} e^{3} + 4 \, a c^{3} d^{6} e^{5} + 6 \, a^{2} c^{2} d^{4} e^{7} + 4 \, a^{3} c d^{2} e^{9} + a^{4} e^{11}\right )} x^{3} + 3 \, {\left (c^{4} d^{9} e^{2} + 4 \, a c^{3} d^{7} e^{4} + 6 \, a^{2} c^{2} d^{5} e^{6} + 4 \, a^{3} c d^{3} e^{8} + a^{4} d e^{10}\right )} x^{2} + 3 \, {\left (c^{4} d^{10} e + 4 \, a c^{3} d^{8} e^{3} + 6 \, a^{2} c^{2} d^{6} e^{5} + 4 \, a^{3} c d^{4} e^{7} + a^{4} d^{2} e^{9}\right )} x\right )}}\right ] \]
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\[ \int \frac {1}{(d+e x)^4 \sqrt {a+c x^2}} \, dx=\int \frac {1}{\sqrt {a + c x^{2}} \left (d + e x\right )^{4}}\, dx \]
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Exception generated. \[ \int \frac {1}{(d+e x)^4 \sqrt {a+c x^2}} \, dx=\text {Exception raised: ValueError} \]
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Leaf count of result is larger than twice the leaf count of optimal. 593 vs. \(2 (179) = 358\).
Time = 0.28 (sec) , antiderivative size = 593, normalized size of antiderivative = 2.99 \[ \int \frac {1}{(d+e x)^4 \sqrt {a+c x^2}} \, dx=\frac {1}{3} \, c^{\frac {3}{2}} {\left (\frac {3 \, {\left (2 \, c^{\frac {3}{2}} d^{3} - 3 \, a \sqrt {c} d e^{2}\right )} \arctan \left (-\frac {{\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )} e + \sqrt {c} d}{\sqrt {-c d^{2} - a e^{2}}}\right )}{{\left (c^{3} d^{6} + 3 \, a c^{2} d^{4} e^{2} + 3 \, a^{2} c d^{2} e^{4} + a^{3} e^{6}\right )} \sqrt {-c d^{2} - a e^{2}}} - \frac {6 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{5} c^{\frac {3}{2}} d^{3} e^{2} - 9 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{5} a \sqrt {c} d e^{4} + 30 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{4} c^{2} d^{4} e - 45 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{4} a c d^{2} e^{3} + 44 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{3} c^{\frac {5}{2}} d^{5} - 82 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{3} a c^{\frac {3}{2}} d^{3} e^{2} + 24 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{3} a^{2} \sqrt {c} d e^{4} - 102 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{2} a c^{2} d^{4} e + 36 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{2} a^{2} c d^{2} e^{3} - 12 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{2} a^{3} e^{5} + 60 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )} a^{2} c^{\frac {3}{2}} d^{3} e^{2} - 15 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )} a^{3} \sqrt {c} d e^{4} - 11 \, a^{3} c d^{2} e^{3} + 4 \, a^{4} e^{5}}{{\left (c^{3} d^{6} + 3 \, a c^{2} d^{4} e^{2} + 3 \, a^{2} c d^{2} e^{4} + a^{3} e^{6}\right )} {\left ({\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )}^{2} e + 2 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + a}\right )} \sqrt {c} d - a e\right )}^{3}}\right )} \]
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Timed out. \[ \int \frac {1}{(d+e x)^4 \sqrt {a+c x^2}} \, dx=\int \frac {1}{\sqrt {c\,x^2+a}\,{\left (d+e\,x\right )}^4} \,d x \]
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