Integrand size = 24, antiderivative size = 132 \[ \int \frac {\left (d^2-e^2 x^2\right )^{7/2}}{(d+e x)^2} \, dx=\frac {7}{16} d^4 x \sqrt {d^2-e^2 x^2}+\frac {7}{24} d^2 x \left (d^2-e^2 x^2\right )^{3/2}+\frac {7 d \left (d^2-e^2 x^2\right )^{5/2}}{30 e}+\frac {(d-e x) \left (d^2-e^2 x^2\right )^{5/2}}{6 e}+\frac {7 d^6 \arctan \left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )}{16 e} \]
[Out]
Time = 0.03 (sec) , antiderivative size = 132, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {669, 685, 655, 201, 223, 209} \[ \int \frac {\left (d^2-e^2 x^2\right )^{7/2}}{(d+e x)^2} \, dx=\frac {7 d^6 \arctan \left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )}{16 e}+\frac {7}{24} d^2 x \left (d^2-e^2 x^2\right )^{3/2}+\frac {7 d \left (d^2-e^2 x^2\right )^{5/2}}{30 e}+\frac {(d-e x) \left (d^2-e^2 x^2\right )^{5/2}}{6 e}+\frac {7}{16} d^4 x \sqrt {d^2-e^2 x^2} \]
[In]
[Out]
Rule 201
Rule 209
Rule 223
Rule 655
Rule 669
Rule 685
Rubi steps \begin{align*} \text {integral}& = \int (d-e x)^2 \left (d^2-e^2 x^2\right )^{3/2} \, dx \\ & = \frac {(d-e x) \left (d^2-e^2 x^2\right )^{5/2}}{6 e}+\frac {1}{6} (7 d) \int (d-e x) \left (d^2-e^2 x^2\right )^{3/2} \, dx \\ & = \frac {7 d \left (d^2-e^2 x^2\right )^{5/2}}{30 e}+\frac {(d-e x) \left (d^2-e^2 x^2\right )^{5/2}}{6 e}+\frac {1}{6} \left (7 d^2\right ) \int \left (d^2-e^2 x^2\right )^{3/2} \, dx \\ & = \frac {7}{24} d^2 x \left (d^2-e^2 x^2\right )^{3/2}+\frac {7 d \left (d^2-e^2 x^2\right )^{5/2}}{30 e}+\frac {(d-e x) \left (d^2-e^2 x^2\right )^{5/2}}{6 e}+\frac {1}{8} \left (7 d^4\right ) \int \sqrt {d^2-e^2 x^2} \, dx \\ & = \frac {7}{16} d^4 x \sqrt {d^2-e^2 x^2}+\frac {7}{24} d^2 x \left (d^2-e^2 x^2\right )^{3/2}+\frac {7 d \left (d^2-e^2 x^2\right )^{5/2}}{30 e}+\frac {(d-e x) \left (d^2-e^2 x^2\right )^{5/2}}{6 e}+\frac {1}{16} \left (7 d^6\right ) \int \frac {1}{\sqrt {d^2-e^2 x^2}} \, dx \\ & = \frac {7}{16} d^4 x \sqrt {d^2-e^2 x^2}+\frac {7}{24} d^2 x \left (d^2-e^2 x^2\right )^{3/2}+\frac {7 d \left (d^2-e^2 x^2\right )^{5/2}}{30 e}+\frac {(d-e x) \left (d^2-e^2 x^2\right )^{5/2}}{6 e}+\frac {1}{16} \left (7 d^6\right ) \text {Subst}\left (\int \frac {1}{1+e^2 x^2} \, dx,x,\frac {x}{\sqrt {d^2-e^2 x^2}}\right ) \\ & = \frac {7}{16} d^4 x \sqrt {d^2-e^2 x^2}+\frac {7}{24} d^2 x \left (d^2-e^2 x^2\right )^{3/2}+\frac {7 d \left (d^2-e^2 x^2\right )^{5/2}}{30 e}+\frac {(d-e x) \left (d^2-e^2 x^2\right )^{5/2}}{6 e}+\frac {7 d^6 \tan ^{-1}\left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )}{16 e} \\ \end{align*}
Time = 0.63 (sec) , antiderivative size = 114, normalized size of antiderivative = 0.86 \[ \int \frac {\left (d^2-e^2 x^2\right )^{7/2}}{(d+e x)^2} \, dx=\frac {\sqrt {d^2-e^2 x^2} \left (96 d^5+135 d^4 e x-192 d^3 e^2 x^2+10 d^2 e^3 x^3+96 d e^4 x^4-40 e^5 x^5\right )-210 d^6 \arctan \left (\frac {e x}{\sqrt {d^2}-\sqrt {d^2-e^2 x^2}}\right )}{240 e} \]
[In]
[Out]
Time = 2.21 (sec) , antiderivative size = 105, normalized size of antiderivative = 0.80
method | result | size |
risch | \(\frac {\left (-40 e^{5} x^{5}+96 x^{4} d \,e^{4}+10 d^{2} e^{3} x^{3}-192 d^{3} e^{2} x^{2}+135 d^{4} e x +96 d^{5}\right ) \sqrt {-x^{2} e^{2}+d^{2}}}{240 e}+\frac {7 d^{6} \arctan \left (\frac {\sqrt {e^{2}}\, x}{\sqrt {-x^{2} e^{2}+d^{2}}}\right )}{16 \sqrt {e^{2}}}\) | \(105\) |
default | \(\frac {\frac {\left (-e^{2} \left (x +\frac {d}{e}\right )^{2}+2 d e \left (x +\frac {d}{e}\right )\right )^{\frac {9}{2}}}{5 d e \left (x +\frac {d}{e}\right )^{2}}+\frac {7 e \left (\frac {\left (-e^{2} \left (x +\frac {d}{e}\right )^{2}+2 d e \left (x +\frac {d}{e}\right )\right )^{\frac {7}{2}}}{7}+d e \left (-\frac {\left (-2 e^{2} \left (x +\frac {d}{e}\right )+2 d e \right ) \left (-e^{2} \left (x +\frac {d}{e}\right )^{2}+2 d e \left (x +\frac {d}{e}\right )\right )^{\frac {5}{2}}}{12 e^{2}}+\frac {5 d^{2} \left (-\frac {\left (-2 e^{2} \left (x +\frac {d}{e}\right )+2 d e \right ) \left (-e^{2} \left (x +\frac {d}{e}\right )^{2}+2 d e \left (x +\frac {d}{e}\right )\right )^{\frac {3}{2}}}{8 e^{2}}+\frac {3 d^{2} \left (-\frac {\left (-2 e^{2} \left (x +\frac {d}{e}\right )+2 d e \right ) \sqrt {-e^{2} \left (x +\frac {d}{e}\right )^{2}+2 d e \left (x +\frac {d}{e}\right )}}{4 e^{2}}+\frac {d^{2} \arctan \left (\frac {\sqrt {e^{2}}\, x}{\sqrt {-e^{2} \left (x +\frac {d}{e}\right )^{2}+2 d e \left (x +\frac {d}{e}\right )}}\right )}{2 \sqrt {e^{2}}}\right )}{4}\right )}{6}\right )\right )}{5 d}}{e^{2}}\) | \(300\) |
[In]
[Out]
none
Time = 0.40 (sec) , antiderivative size = 105, normalized size of antiderivative = 0.80 \[ \int \frac {\left (d^2-e^2 x^2\right )^{7/2}}{(d+e x)^2} \, dx=-\frac {210 \, d^{6} \arctan \left (-\frac {d - \sqrt {-e^{2} x^{2} + d^{2}}}{e x}\right ) + {\left (40 \, e^{5} x^{5} - 96 \, d e^{4} x^{4} - 10 \, d^{2} e^{3} x^{3} + 192 \, d^{3} e^{2} x^{2} - 135 \, d^{4} e x - 96 \, d^{5}\right )} \sqrt {-e^{2} x^{2} + d^{2}}}{240 \, e} \]
[In]
[Out]
Time = 2.13 (sec) , antiderivative size = 328, normalized size of antiderivative = 2.48 \[ \int \frac {\left (d^2-e^2 x^2\right )^{7/2}}{(d+e x)^2} \, dx=d^{4} \left (\begin {cases} \frac {d^{2} \left (\begin {cases} \frac {\log {\left (- 2 e^{2} x + 2 \sqrt {- e^{2}} \sqrt {d^{2} - e^{2} x^{2}} \right )}}{\sqrt {- e^{2}}} & \text {for}\: d^{2} \neq 0 \\\frac {x \log {\left (x \right )}}{\sqrt {- e^{2} x^{2}}} & \text {otherwise} \end {cases}\right )}{2} + \frac {x \sqrt {d^{2} - e^{2} x^{2}}}{2} & \text {for}\: e^{2} \neq 0 \\x \sqrt {d^{2}} & \text {otherwise} \end {cases}\right ) - 2 d^{3} e \left (\begin {cases} \sqrt {d^{2} - e^{2} x^{2}} \left (- \frac {d^{2}}{3 e^{2}} + \frac {x^{2}}{3}\right ) & \text {for}\: e^{2} \neq 0 \\\frac {x^{2} \sqrt {d^{2}}}{2} & \text {otherwise} \end {cases}\right ) + 2 d e^{3} \left (\begin {cases} \sqrt {d^{2} - e^{2} x^{2}} \left (- \frac {2 d^{4}}{15 e^{4}} - \frac {d^{2} x^{2}}{15 e^{2}} + \frac {x^{4}}{5}\right ) & \text {for}\: e^{2} \neq 0 \\\frac {x^{4} \sqrt {d^{2}}}{4} & \text {otherwise} \end {cases}\right ) - e^{4} \left (\begin {cases} \frac {d^{6} \left (\begin {cases} \frac {\log {\left (- 2 e^{2} x + 2 \sqrt {- e^{2}} \sqrt {d^{2} - e^{2} x^{2}} \right )}}{\sqrt {- e^{2}}} & \text {for}\: d^{2} \neq 0 \\\frac {x \log {\left (x \right )}}{\sqrt {- e^{2} x^{2}}} & \text {otherwise} \end {cases}\right )}{16 e^{4}} + \sqrt {d^{2} - e^{2} x^{2}} \left (- \frac {d^{4} x}{16 e^{4}} - \frac {d^{2} x^{3}}{24 e^{2}} + \frac {x^{5}}{6}\right ) & \text {for}\: e^{2} \neq 0 \\\frac {x^{5} \sqrt {d^{2}}}{5} & \text {otherwise} \end {cases}\right ) \]
[In]
[Out]
Result contains complex when optimal does not.
Time = 0.27 (sec) , antiderivative size = 139, normalized size of antiderivative = 1.05 \[ \int \frac {\left (d^2-e^2 x^2\right )^{7/2}}{(d+e x)^2} \, dx=-\frac {7 i \, d^{6} \arcsin \left (\frac {e x}{d} + 2\right )}{16 \, e} + \frac {7}{16} \, \sqrt {e^{2} x^{2} + 4 \, d e x + 3 \, d^{2}} d^{4} x + \frac {7 \, \sqrt {e^{2} x^{2} + 4 \, d e x + 3 \, d^{2}} d^{5}}{8 \, e} + \frac {7}{24} \, {\left (-e^{2} x^{2} + d^{2}\right )}^{\frac {3}{2}} d^{2} x + \frac {{\left (-e^{2} x^{2} + d^{2}\right )}^{\frac {7}{2}}}{6 \, {\left (e^{2} x + d e\right )}} + \frac {7 \, {\left (-e^{2} x^{2} + d^{2}\right )}^{\frac {5}{2}} d}{30 \, e} \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 248 vs. \(2 (113) = 226\).
Time = 0.32 (sec) , antiderivative size = 248, normalized size of antiderivative = 1.88 \[ \int \frac {\left (d^2-e^2 x^2\right )^{7/2}}{(d+e x)^2} \, dx=-\frac {{\left (6720 \, d^{7} e^{7} \arctan \left (\sqrt {\frac {2 \, d}{e x + d} - 1}\right ) \mathrm {sgn}\left (\frac {1}{e x + d}\right ) \mathrm {sgn}\left (e\right ) + \frac {{\left (105 \, d^{7} e^{7} {\left (\frac {2 \, d}{e x + d} - 1\right )}^{\frac {11}{2}} \mathrm {sgn}\left (\frac {1}{e x + d}\right ) \mathrm {sgn}\left (e\right ) + 595 \, d^{7} e^{7} {\left (\frac {2 \, d}{e x + d} - 1\right )}^{\frac {9}{2}} \mathrm {sgn}\left (\frac {1}{e x + d}\right ) \mathrm {sgn}\left (e\right ) - 1686 \, d^{7} e^{7} {\left (\frac {2 \, d}{e x + d} - 1\right )}^{\frac {7}{2}} \mathrm {sgn}\left (\frac {1}{e x + d}\right ) \mathrm {sgn}\left (e\right ) - 1386 \, d^{7} e^{7} {\left (\frac {2 \, d}{e x + d} - 1\right )}^{\frac {5}{2}} \mathrm {sgn}\left (\frac {1}{e x + d}\right ) \mathrm {sgn}\left (e\right ) - 595 \, d^{7} e^{7} {\left (\frac {2 \, d}{e x + d} - 1\right )}^{\frac {3}{2}} \mathrm {sgn}\left (\frac {1}{e x + d}\right ) \mathrm {sgn}\left (e\right ) - 105 \, d^{7} e^{7} \sqrt {\frac {2 \, d}{e x + d} - 1} \mathrm {sgn}\left (\frac {1}{e x + d}\right ) \mathrm {sgn}\left (e\right )\right )} {\left (e x + d\right )}^{6}}{d^{6}}\right )} {\left | e \right |}}{7680 \, d e^{9}} \]
[In]
[Out]
Timed out. \[ \int \frac {\left (d^2-e^2 x^2\right )^{7/2}}{(d+e x)^2} \, dx=\int \frac {{\left (d^2-e^2\,x^2\right )}^{7/2}}{{\left (d+e\,x\right )}^2} \,d x \]
[In]
[Out]