Integrand size = 24, antiderivative size = 375 \[ \int e^{-2 \coth ^{-1}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx=\frac {7 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7}{16 (1-a x)^3 (1+a x)^3}+\frac {3 a^5 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^6}{8 (1-a x)^3 (1+a x)^2}-\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}-\frac {19 a^4 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^5}{16 (1-a x)^3 (1+a x)}+\frac {2 a^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^4}{3 (1-a x)^2 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {2 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7 \arcsin (a x)}{(1-a x)^{7/2} (1+a x)^{7/2}}+\frac {25 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7 \text {arctanh}\left (\sqrt {1-a x} \sqrt {1+a x}\right )}{16 (1-a x)^{7/2} (1+a x)^{7/2}} \]
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Time = 0.38 (sec) , antiderivative size = 375, normalized size of antiderivative = 1.00, number of steps used = 15, number of rules used = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.458, Rules used = {6302, 6294, 6264, 99, 154, 159, 163, 41, 222, 94, 214} \[ \int e^{-2 \coth ^{-1}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx=-\frac {a x^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{15 (a x+1)}+\frac {x (1-a x) \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{6 (a x+1)}-\frac {23 a^2 x^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{120 (1-a x) (a x+1)}-\frac {2 a^6 x^7 \arcsin (a x) \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{(1-a x)^{7/2} (a x+1)^{7/2}}+\frac {25 a^6 x^7 \text {arctanh}\left (\sqrt {1-a x} \sqrt {a x+1}\right ) \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{16 (1-a x)^{7/2} (a x+1)^{7/2}}+\frac {7 a^6 x^7 \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{16 (1-a x)^3 (a x+1)^3}+\frac {3 a^5 x^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{8 (1-a x)^3 (a x+1)^2}-\frac {19 a^4 x^5 \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{16 (1-a x)^3 (a x+1)}+\frac {2 a^3 x^4 \left (c-\frac {c}{a^2 x^2}\right )^{7/2}}{3 (1-a x)^2 (a x+1)} \]
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Rule 41
Rule 94
Rule 99
Rule 154
Rule 159
Rule 163
Rule 214
Rule 222
Rule 6264
Rule 6294
Rule 6302
Rubi steps \begin{align*} \text {integral}& = -\int e^{-2 \text {arctanh}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx \\ & = -\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {e^{-2 \text {arctanh}(a x)} (1-a x)^{7/2} (1+a x)^{7/2}}{x^7} \, dx}{(1-a x)^{7/2} (1+a x)^{7/2}} \\ & = -\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {(1-a x)^{9/2} (1+a x)^{5/2}}{x^7} \, dx}{(1-a x)^{7/2} (1+a x)^{7/2}} \\ & = \frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {(1-a x)^{7/2} (1+a x)^{3/2} \left (-2 a-7 a^2 x\right )}{x^6} \, dx}{6 (1-a x)^{7/2} (1+a x)^{7/2}} \\ & = -\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {(1-a x)^{5/2} (1+a x)^{3/2} \left (-23 a^2+37 a^3 x\right )}{x^5} \, dx}{30 (1-a x)^{7/2} (1+a x)^{7/2}} \\ & = -\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {(1-a x)^{3/2} (1+a x)^{3/2} \left (240 a^3-125 a^4 x\right )}{x^4} \, dx}{120 (1-a x)^{7/2} (1+a x)^{7/2}} \\ & = -\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}+\frac {2 a^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^4}{3 (1-a x)^2 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {\sqrt {1-a x} (1+a x)^{3/2} \left (-855 a^4+135 a^5 x\right )}{x^3} \, dx}{360 (1-a x)^{7/2} (1+a x)^{7/2}} \\ & = -\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}-\frac {19 a^4 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^5}{16 (1-a x)^3 (1+a x)}+\frac {2 a^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^4}{3 (1-a x)^2 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {(1+a x)^{3/2} \left (270 a^5+585 a^6 x\right )}{x^2 \sqrt {1-a x}} \, dx}{720 (1-a x)^{7/2} (1+a x)^{7/2}} \\ & = \frac {3 a^5 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^6}{8 (1-a x)^3 (1+a x)^2}-\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}-\frac {19 a^4 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^5}{16 (1-a x)^3 (1+a x)}+\frac {2 a^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^4}{3 (1-a x)^2 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {\sqrt {1+a x} \left (1125 a^6+315 a^7 x\right )}{x \sqrt {1-a x}} \, dx}{720 (1-a x)^{7/2} (1+a x)^{7/2}} \\ & = \frac {7 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7}{16 (1-a x)^3 (1+a x)^3}+\frac {3 a^5 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^6}{8 (1-a x)^3 (1+a x)^2}-\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}-\frac {19 a^4 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^5}{16 (1-a x)^3 (1+a x)}+\frac {2 a^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^4}{3 (1-a x)^2 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}+\frac {\left (\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {-1125 a^7-1440 a^8 x}{x \sqrt {1-a x} \sqrt {1+a x}} \, dx}{720 a (1-a x)^{7/2} (1+a x)^{7/2}} \\ & = \frac {7 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7}{16 (1-a x)^3 (1+a x)^3}+\frac {3 a^5 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^6}{8 (1-a x)^3 (1+a x)^2}-\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}-\frac {19 a^4 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^5}{16 (1-a x)^3 (1+a x)}+\frac {2 a^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^4}{3 (1-a x)^2 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {\left (25 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {1}{x \sqrt {1-a x} \sqrt {1+a x}} \, dx}{16 (1-a x)^{7/2} (1+a x)^{7/2}}-\frac {\left (2 a^7 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {1}{\sqrt {1-a x} \sqrt {1+a x}} \, dx}{(1-a x)^{7/2} (1+a x)^{7/2}} \\ & = \frac {7 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7}{16 (1-a x)^3 (1+a x)^3}+\frac {3 a^5 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^6}{8 (1-a x)^3 (1+a x)^2}-\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}-\frac {19 a^4 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^5}{16 (1-a x)^3 (1+a x)}+\frac {2 a^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^4}{3 (1-a x)^2 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}+\frac {\left (25 a^7 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \text {Subst}\left (\int \frac {1}{a-a x^2} \, dx,x,\sqrt {1-a x} \sqrt {1+a x}\right )}{16 (1-a x)^{7/2} (1+a x)^{7/2}}-\frac {\left (2 a^7 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7\right ) \int \frac {1}{\sqrt {1-a^2 x^2}} \, dx}{(1-a x)^{7/2} (1+a x)^{7/2}} \\ & = \frac {7 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7}{16 (1-a x)^3 (1+a x)^3}+\frac {3 a^5 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^6}{8 (1-a x)^3 (1+a x)^2}-\frac {a \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^2}{15 (1+a x)}-\frac {19 a^4 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^5}{16 (1-a x)^3 (1+a x)}+\frac {2 a^3 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^4}{3 (1-a x)^2 (1+a x)}-\frac {23 a^2 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^3}{120 (1-a x) (1+a x)}+\frac {\left (c-\frac {c}{a^2 x^2}\right )^{7/2} x (1-a x)}{6 (1+a x)}-\frac {2 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7 \arcsin (a x)}{(1-a x)^{7/2} (1+a x)^{7/2}}+\frac {25 a^6 \left (c-\frac {c}{a^2 x^2}\right )^{7/2} x^7 \text {arctanh}\left (\sqrt {1-a x} \sqrt {1+a x}\right )}{16 (1-a x)^{7/2} (1+a x)^{7/2}} \\ \end{align*}
Time = 0.26 (sec) , antiderivative size = 150, normalized size of antiderivative = 0.40 \[ \int e^{-2 \coth ^{-1}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx=\frac {c^3 \sqrt {c-\frac {c}{a^2 x^2}} \left (\sqrt {-1+a^2 x^2} \left (-40+96 a x+70 a^2 x^2-352 a^3 x^3+105 a^4 x^4+736 a^5 x^5+240 a^6 x^6\right )+375 a^6 x^6 \arctan \left (\frac {1}{\sqrt {-1+a^2 x^2}}\right )-480 a^6 x^6 \log \left (a x+\sqrt {-1+a^2 x^2}\right )\right )}{240 a^6 x^5 \sqrt {-1+a^2 x^2}} \]
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Time = 0.58 (sec) , antiderivative size = 250, normalized size of antiderivative = 0.67
method | result | size |
risch | \(\frac {\left (736 a^{7} x^{7}+105 a^{6} x^{6}-1088 a^{5} x^{5}-35 a^{4} x^{4}+448 a^{3} x^{3}-110 a^{2} x^{2}-96 a x +40\right ) c^{3} \sqrt {\frac {c \left (a^{2} x^{2}-1\right )}{a^{2} x^{2}}}}{240 x^{5} a^{6} \left (a^{2} x^{2}-1\right )}+\frac {\left (-\frac {2 a^{7} \ln \left (\frac {a^{2} c x}{\sqrt {a^{2} c}}+\sqrt {a^{2} c \,x^{2}-c}\right )}{\sqrt {a^{2} c}}+\frac {25 a^{6} \ln \left (\frac {-2 c +2 \sqrt {-c}\, \sqrt {a^{2} c \,x^{2}-c}}{x}\right )}{16 \sqrt {-c}}+\frac {a^{6} \sqrt {c \left (a^{2} x^{2}-1\right )}}{c}\right ) c^{3} \sqrt {\frac {c \left (a^{2} x^{2}-1\right )}{a^{2} x^{2}}}\, x \sqrt {c \left (a^{2} x^{2}-1\right )}}{a^{6} \left (a^{2} x^{2}-1\right )}\) | \(250\) |
default | \(\frac {{\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2} x^{2}}\right )}^{\frac {7}{2}} x \left (-2016 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {7}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{9} c \,x^{7}+2016 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {9}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{9} x^{5}-375 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {7}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{8} c \,x^{6}+480 \left (\frac {c \left (a x -1\right ) \left (a x +1\right )}{a^{2}}\right )^{\frac {7}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{8} c \,x^{6}-105 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {9}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{8} x^{4}+2352 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {5}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{7} c^{2} x^{7}-560 \left (\frac {c \left (a x -1\right ) \left (a x +1\right )}{a^{2}}\right )^{\frac {5}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{7} c^{2} x^{7}+224 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {9}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{7} x^{3}+525 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {5}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{6} c^{2} x^{6}-2940 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {3}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{5} c^{3} x^{7}+700 \sqrt {-\frac {c}{a^{2}}}\, \left (\frac {c \left (a x -1\right ) \left (a x +1\right )}{a^{2}}\right )^{\frac {3}{2}} a^{5} c^{3} x^{7}-630 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {9}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{6} x^{2}-875 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {3}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{4} c^{3} x^{6}+672 {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {9}{2}} \sqrt {-\frac {c}{a^{2}}}\, a^{5} x +4410 \sqrt {\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}}\, \sqrt {-\frac {c}{a^{2}}}\, a^{3} c^{4} x^{7}-1050 \sqrt {-\frac {c}{a^{2}}}\, \sqrt {\frac {c \left (a x -1\right ) \left (a x +1\right )}{a^{2}}}\, a^{3} c^{4} x^{7}-280 a^{4} {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {9}{2}} \sqrt {-\frac {c}{a^{2}}}+2625 \sqrt {\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}}\, \sqrt {-\frac {c}{a^{2}}}\, a^{2} c^{4} x^{6}-4410 \sqrt {-\frac {c}{a^{2}}}\, c^{\frac {9}{2}} \ln \left (\sqrt {c}\, x +\sqrt {\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}}\right ) a \,x^{6}+1050 \sqrt {-\frac {c}{a^{2}}}\, c^{\frac {9}{2}} \ln \left (\frac {\sqrt {c}\, \sqrt {\frac {c \left (a x -1\right ) \left (a x +1\right )}{a^{2}}}+c x}{\sqrt {c}}\right ) a \,x^{6}+2625 \ln \left (\frac {2 \sqrt {-\frac {c}{a^{2}}}\, \sqrt {\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}}\, a^{2}-2 c}{a^{2} x}\right ) c^{5} x^{6}\right )}{1680 a^{2} {\left (\frac {c \left (a^{2} x^{2}-1\right )}{a^{2}}\right )}^{\frac {7}{2}} \sqrt {-\frac {c}{a^{2}}}\, c}\) | \(795\) |
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Time = 0.27 (sec) , antiderivative size = 438, normalized size of antiderivative = 1.17 \[ \int e^{-2 \coth ^{-1}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx=\left [\frac {960 \, a^{5} \sqrt {-c} c^{3} x^{5} \arctan \left (\frac {a^{2} \sqrt {-c} x^{2} \sqrt {\frac {a^{2} c x^{2} - c}{a^{2} x^{2}}}}{a^{2} c x^{2} - c}\right ) + 375 \, a^{5} \sqrt {-c} c^{3} x^{5} \log \left (-\frac {a^{2} c x^{2} - 2 \, a \sqrt {-c} x \sqrt {\frac {a^{2} c x^{2} - c}{a^{2} x^{2}}} - 2 \, c}{x^{2}}\right ) + 2 \, {\left (240 \, a^{6} c^{3} x^{6} + 736 \, a^{5} c^{3} x^{5} + 105 \, a^{4} c^{3} x^{4} - 352 \, a^{3} c^{3} x^{3} + 70 \, a^{2} c^{3} x^{2} + 96 \, a c^{3} x - 40 \, c^{3}\right )} \sqrt {\frac {a^{2} c x^{2} - c}{a^{2} x^{2}}}}{480 \, a^{6} x^{5}}, \frac {375 \, a^{5} c^{\frac {7}{2}} x^{5} \arctan \left (\frac {a \sqrt {c} x \sqrt {\frac {a^{2} c x^{2} - c}{a^{2} x^{2}}}}{a^{2} c x^{2} - c}\right ) + 240 \, a^{5} c^{\frac {7}{2}} x^{5} \log \left (2 \, a^{2} c x^{2} - 2 \, a^{2} \sqrt {c} x^{2} \sqrt {\frac {a^{2} c x^{2} - c}{a^{2} x^{2}}} - c\right ) + {\left (240 \, a^{6} c^{3} x^{6} + 736 \, a^{5} c^{3} x^{5} + 105 \, a^{4} c^{3} x^{4} - 352 \, a^{3} c^{3} x^{3} + 70 \, a^{2} c^{3} x^{2} + 96 \, a c^{3} x - 40 \, c^{3}\right )} \sqrt {\frac {a^{2} c x^{2} - c}{a^{2} x^{2}}}}{240 \, a^{6} x^{5}}\right ] \]
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Result contains complex when optimal does not.
Time = 18.11 (sec) , antiderivative size = 1059, normalized size of antiderivative = 2.82 \[ \int e^{-2 \coth ^{-1}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx=\text {Too large to display} \]
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\[ \int e^{-2 \coth ^{-1}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx=\int { \frac {{\left (a x - 1\right )} {\left (c - \frac {c}{a^{2} x^{2}}\right )}^{\frac {7}{2}}}{a x + 1} \,d x } \]
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Time = 46.81 (sec) , antiderivative size = 561, normalized size of antiderivative = 1.50 \[ \int e^{-2 \coth ^{-1}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx=-\frac {1}{120} \, {\left (\frac {375 \, c^{\frac {7}{2}} \arctan \left (-\frac {\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}}{\sqrt {c}}\right ) \mathrm {sgn}\left (x\right )}{a^{2}} - \frac {240 \, c^{\frac {7}{2}} \log \left ({\left | -\sqrt {a^{2} c} x + \sqrt {a^{2} c x^{2} - c} \right |}\right ) \mathrm {sgn}\left (x\right )}{a {\left | a \right |}} - \frac {120 \, \sqrt {a^{2} c x^{2} - c} c^{3} \mathrm {sgn}\left (x\right )}{a^{2}} + \frac {105 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{11} c^{4} {\left | a \right |} \mathrm {sgn}\left (x\right ) - 1440 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{10} a c^{\frac {9}{2}} \mathrm {sgn}\left (x\right ) + 595 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{9} c^{5} {\left | a \right |} \mathrm {sgn}\left (x\right ) - 4320 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{8} a c^{\frac {11}{2}} \mathrm {sgn}\left (x\right ) - 150 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{7} c^{6} {\left | a \right |} \mathrm {sgn}\left (x\right ) - 7360 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{6} a c^{\frac {13}{2}} \mathrm {sgn}\left (x\right ) + 150 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{5} c^{7} {\left | a \right |} \mathrm {sgn}\left (x\right ) - 6720 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{4} a c^{\frac {15}{2}} \mathrm {sgn}\left (x\right ) - 595 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{3} c^{8} {\left | a \right |} \mathrm {sgn}\left (x\right ) - 2976 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{2} a c^{\frac {17}{2}} \mathrm {sgn}\left (x\right ) - 105 \, {\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )} c^{9} {\left | a \right |} \mathrm {sgn}\left (x\right ) - 736 \, a c^{\frac {19}{2}} \mathrm {sgn}\left (x\right )}{{\left ({\left (\sqrt {a^{2} c} x - \sqrt {a^{2} c x^{2} - c}\right )}^{2} + c\right )}^{6} a^{2} {\left | a \right |}}\right )} {\left | a \right |} \]
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Timed out. \[ \int e^{-2 \coth ^{-1}(a x)} \left (c-\frac {c}{a^2 x^2}\right )^{7/2} \, dx=\int \frac {{\left (c-\frac {c}{a^2\,x^2}\right )}^{7/2}\,\left (a\,x-1\right )}{a\,x+1} \,d x \]
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