Integrand size = 22, antiderivative size = 204 \[ \int \frac {x^4}{(d+e x)^2 \sqrt {a+c x^2}} \, dx=-\frac {5 d \sqrt {a+c x^2}}{2 c e^3}-\frac {d^4 \sqrt {a+c x^2}}{e^3 \left (c d^2+a e^2\right ) (d+e x)}+\frac {(d+e x) \sqrt {a+c x^2}}{2 c e^3}+\frac {\left (6 c d^2-a e^2\right ) \text {arctanh}\left (\frac {\sqrt {c} x}{\sqrt {a+c x^2}}\right )}{2 c^{3/2} e^4}+\frac {d^3 \left (3 c d^2+4 a e^2\right ) \text {arctanh}\left (\frac {a e-c d x}{\sqrt {c d^2+a e^2} \sqrt {a+c x^2}}\right )}{e^4 \left (c d^2+a e^2\right )^{3/2}} \]
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Time = 0.35 (sec) , antiderivative size = 204, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.273, Rules used = {1665, 1668, 858, 223, 212, 739} \[ \int \frac {x^4}{(d+e x)^2 \sqrt {a+c x^2}} \, dx=\frac {\text {arctanh}\left (\frac {\sqrt {c} x}{\sqrt {a+c x^2}}\right ) \left (6 c d^2-a e^2\right )}{2 c^{3/2} e^4}+\frac {d^3 \left (4 a e^2+3 c d^2\right ) \text {arctanh}\left (\frac {a e-c d x}{\sqrt {a+c x^2} \sqrt {a e^2+c d^2}}\right )}{e^4 \left (a e^2+c d^2\right )^{3/2}}-\frac {d^4 \sqrt {a+c x^2}}{e^3 (d+e x) \left (a e^2+c d^2\right )}-\frac {5 d \sqrt {a+c x^2}}{2 c e^3}+\frac {\sqrt {a+c x^2} (d+e x)}{2 c e^3} \]
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Rule 212
Rule 223
Rule 739
Rule 858
Rule 1665
Rule 1668
Rubi steps \begin{align*} \text {integral}& = -\frac {d^4 \sqrt {a+c x^2}}{e^3 \left (c d^2+a e^2\right ) (d+e x)}-\frac {\int \frac {\frac {a d^3}{e^2}-\frac {d^2 \left (c d^2+a e^2\right ) x}{e^3}+d \left (a+\frac {c d^2}{e^2}\right ) x^2-\frac {\left (c d^2+a e^2\right ) x^3}{e}}{(d+e x) \sqrt {a+c x^2}} \, dx}{c d^2+a e^2} \\ & = -\frac {d^4 \sqrt {a+c x^2}}{e^3 \left (c d^2+a e^2\right ) (d+e x)}+\frac {(d+e x) \sqrt {a+c x^2}}{2 c e^3}-\frac {\int \frac {a d e \left (3 c d^2+a e^2\right )-\left (c^2 d^4-a^2 e^4\right ) x+5 c d e \left (c d^2+a e^2\right ) x^2}{(d+e x) \sqrt {a+c x^2}} \, dx}{2 c e^3 \left (c d^2+a e^2\right )} \\ & = -\frac {5 d \sqrt {a+c x^2}}{2 c e^3}-\frac {d^4 \sqrt {a+c x^2}}{e^3 \left (c d^2+a e^2\right ) (d+e x)}+\frac {(d+e x) \sqrt {a+c x^2}}{2 c e^3}-\frac {\int \frac {a c d e^3 \left (3 c d^2+a e^2\right )-c e^2 \left (6 c d^2-a e^2\right ) \left (c d^2+a e^2\right ) x}{(d+e x) \sqrt {a+c x^2}} \, dx}{2 c^2 e^5 \left (c d^2+a e^2\right )} \\ & = -\frac {5 d \sqrt {a+c x^2}}{2 c e^3}-\frac {d^4 \sqrt {a+c x^2}}{e^3 \left (c d^2+a e^2\right ) (d+e x)}+\frac {(d+e x) \sqrt {a+c x^2}}{2 c e^3}+\frac {\left (6 c d^2-a e^2\right ) \int \frac {1}{\sqrt {a+c x^2}} \, dx}{2 c e^4}-\frac {\left (d^3 \left (3 c d^2+4 a e^2\right )\right ) \int \frac {1}{(d+e x) \sqrt {a+c x^2}} \, dx}{e^4 \left (c d^2+a e^2\right )} \\ & = -\frac {5 d \sqrt {a+c x^2}}{2 c e^3}-\frac {d^4 \sqrt {a+c x^2}}{e^3 \left (c d^2+a e^2\right ) (d+e x)}+\frac {(d+e x) \sqrt {a+c x^2}}{2 c e^3}+\frac {\left (6 c d^2-a e^2\right ) \text {Subst}\left (\int \frac {1}{1-c x^2} \, dx,x,\frac {x}{\sqrt {a+c x^2}}\right )}{2 c e^4}+\frac {\left (d^3 \left (3 c d^2+4 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 )}{e^4 \left (c d^2+a e^2\right )} \\ & = -\frac {5 d \sqrt {a+c x^2}}{2 c e^3}-\frac {d^4 \sqrt {a+c x^2}}{e^3 \left (c d^2+a e^2\right ) (d+e x)}+\frac {(d+e x) \sqrt {a+c x^2}}{2 c e^3}+\frac {\left (6 c d^2-a e^2\right ) \tanh ^{-1}\left (\frac {\sqrt {c} x}{\sqrt {a+c x^2}}\right )}{2 c^{3/2} e^4}+\frac {d^3 \left (3 c d^2+4 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 )}{e^4 \left (c d^2+a e^2\right )^{3/2}} \\ \end{align*}
Time = 1.46 (sec) , antiderivative size = 223, normalized size of antiderivative = 1.09 \[ \int \frac {x^4}{(d+e x)^2 \sqrt {a+c x^2}} \, dx=\frac {\frac {e \sqrt {a+c x^2} \left (c d^2 \left (-6 d^2-3 d e x+e^2 x^2\right )+a e^2 \left (-4 d^2-3 d e x+e^2 x^2\right )\right )}{c \left (c d^2+a e^2\right ) (d+e x)}-\frac {4 d^3 \left (3 c d^2+4 a e^2\right ) \arctan \left (\frac {\sqrt {-c d^2-a e^2} x}{\sqrt {a} (d+e x)-d \sqrt {a+c x^2}}\right )}{\left (-c d^2-a e^2\right )^{3/2}}+\frac {2 \left (6 c d^2-a e^2\right ) \text {arctanh}\left (\frac {\sqrt {c} x}{-\sqrt {a}+\sqrt {a+c x^2}}\right )}{c^{3/2}}}{2 e^4} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(419\) vs. \(2(180)=360\).
Time = 0.45 (sec) , antiderivative size = 420, normalized size of antiderivative = 2.06
method | result | size |
risch | \(-\frac {\left (-e x +4 d \right ) \sqrt {c \,x^{2}+a}}{2 c \,e^{3}}-\frac {\frac {\left (e^{2} a -6 c \,d^{2}\right ) \ln \left (x \sqrt {c}+\sqrt {c \,x^{2}+a}\right )}{e \sqrt {c}}-\frac {8 c \,d^{3} \ln \left (\frac {\frac {2 e^{2} a +2 c \,d^{2}}{e^{2}}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+2 \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}\, \sqrt {\left (x +\frac {d}{e}\right )^{2} c -\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{x +\frac {d}{e}}\right )}{e^{2} \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}}-\frac {2 c \,d^{4} \left (-\frac {e^{2} \sqrt {\left (x +\frac {d}{e}\right )^{2} c -\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{\left (e^{2} a +c \,d^{2}\right ) \left (x +\frac {d}{e}\right )}-\frac {e c d \ln \left (\frac {\frac {2 e^{2} a +2 c \,d^{2}}{e^{2}}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+2 \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}\, \sqrt {\left (x +\frac {d}{e}\right )^{2} c -\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{x +\frac {d}{e}}\right )}{\left (e^{2} a +c \,d^{2}\right ) \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}}\right )}{e^{3}}}{2 c \,e^{3}}\) | \(420\) |
default | \(\frac {\frac {x \sqrt {c \,x^{2}+a}}{2 c}-\frac {a \ln \left (x \sqrt {c}+\sqrt {c \,x^{2}+a}\right )}{2 c^{\frac {3}{2}}}}{e^{2}}+\frac {3 d^{2} \ln \left (x \sqrt {c}+\sqrt {c \,x^{2}+a}\right )}{e^{4} \sqrt {c}}-\frac {2 d \sqrt {c \,x^{2}+a}}{c \,e^{3}}+\frac {d^{4} \left (-\frac {e^{2} \sqrt {\left (x +\frac {d}{e}\right )^{2} c -\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{\left (e^{2} a +c \,d^{2}\right ) \left (x +\frac {d}{e}\right )}-\frac {e c d \ln \left (\frac {\frac {2 e^{2} a +2 c \,d^{2}}{e^{2}}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+2 \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}\, \sqrt {\left (x +\frac {d}{e}\right )^{2} c -\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{x +\frac {d}{e}}\right )}{\left (e^{2} a +c \,d^{2}\right ) \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}}\right )}{e^{6}}+\frac {4 d^{3} \ln \left (\frac {\frac {2 e^{2} a +2 c \,d^{2}}{e^{2}}-\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+2 \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}\, \sqrt {\left (x +\frac {d}{e}\right )^{2} c -\frac {2 c d \left (x +\frac {d}{e}\right )}{e}+\frac {e^{2} a +c \,d^{2}}{e^{2}}}}{x +\frac {d}{e}}\right )}{e^{5} \sqrt {\frac {e^{2} a +c \,d^{2}}{e^{2}}}}\) | \(435\) |
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Leaf count of result is larger than twice the leaf count of optimal. 431 vs. \(2 (181) = 362\).
Time = 46.20 (sec) , antiderivative size = 1786, normalized size of antiderivative = 8.75 \[ \int \frac {x^4}{(d+e x)^2 \sqrt {a+c x^2}} \, dx=\text {Too large to display} \]
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\[ \int \frac {x^4}{(d+e x)^2 \sqrt {a+c x^2}} \, dx=\int \frac {x^{4}}{\sqrt {a + c x^{2}} \left (d + e x\right )^{2}}\, dx \]
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Exception generated. \[ \int \frac {x^4}{(d+e x)^2 \sqrt {a+c x^2}} \, dx=\text {Exception raised: ValueError} \]
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\[ \int \frac {x^4}{(d+e x)^2 \sqrt {a+c x^2}} \, dx=\int { \frac {x^{4}}{\sqrt {c x^{2} + a} {\left (e x + d\right )}^{2}} \,d x } \]
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Timed out. \[ \int \frac {x^4}{(d+e x)^2 \sqrt {a+c x^2}} \, dx=\int \frac {x^4}{\sqrt {c\,x^2+a}\,{\left (d+e\,x\right )}^2} \,d x \]
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