Integrand size = 23, antiderivative size = 101 \[ \int e^{2 \coth ^{-1}(a x)} x^3 \sqrt {c-a c x} \, dx=\frac {4 \sqrt {c-a c x}}{a^4}-\frac {14 (c-a c x)^{3/2}}{3 a^4 c}+\frac {18 (c-a c x)^{5/2}}{5 a^4 c^2}-\frac {10 (c-a c x)^{7/2}}{7 a^4 c^3}+\frac {2 (c-a c x)^{9/2}}{9 a^4 c^4} \]
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Time = 0.15 (sec) , antiderivative size = 101, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.174, Rules used = {6302, 6265, 21, 78} \[ \int e^{2 \coth ^{-1}(a x)} x^3 \sqrt {c-a c x} \, dx=\frac {2 (c-a c x)^{9/2}}{9 a^4 c^4}-\frac {10 (c-a c x)^{7/2}}{7 a^4 c^3}+\frac {18 (c-a c x)^{5/2}}{5 a^4 c^2}-\frac {14 (c-a c x)^{3/2}}{3 a^4 c}+\frac {4 \sqrt {c-a c x}}{a^4} \]
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Rule 21
Rule 78
Rule 6265
Rule 6302
Rubi steps \begin{align*} \text {integral}& = -\int e^{2 \text {arctanh}(a x)} x^3 \sqrt {c-a c x} \, dx \\ & = -\int \frac {x^3 (1+a x) \sqrt {c-a c x}}{1-a x} \, dx \\ & = -\left (c \int \frac {x^3 (1+a x)}{\sqrt {c-a c x}} \, dx\right ) \\ & = -\left (c \int \left (\frac {2}{a^3 \sqrt {c-a c x}}-\frac {7 \sqrt {c-a c x}}{a^3 c}+\frac {9 (c-a c x)^{3/2}}{a^3 c^2}-\frac {5 (c-a c x)^{5/2}}{a^3 c^3}+\frac {(c-a c x)^{7/2}}{a^3 c^4}\right ) \, dx\right ) \\ & = \frac {4 \sqrt {c-a c x}}{a^4}-\frac {14 (c-a c x)^{3/2}}{3 a^4 c}+\frac {18 (c-a c x)^{5/2}}{5 a^4 c^2}-\frac {10 (c-a c x)^{7/2}}{7 a^4 c^3}+\frac {2 (c-a c x)^{9/2}}{9 a^4 c^4} \\ \end{align*}
Time = 0.08 (sec) , antiderivative size = 48, normalized size of antiderivative = 0.48 \[ \int e^{2 \coth ^{-1}(a x)} x^3 \sqrt {c-a c x} \, dx=\frac {2 \sqrt {c-a c x} \left (272+136 a x+102 a^2 x^2+85 a^3 x^3+35 a^4 x^4\right )}{315 a^4} \]
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Time = 0.54 (sec) , antiderivative size = 45, normalized size of antiderivative = 0.45
method | result | size |
gosper | \(\frac {2 \sqrt {-a c x +c}\, \left (35 a^{4} x^{4}+85 a^{3} x^{3}+102 a^{2} x^{2}+136 a x +272\right )}{315 a^{4}}\) | \(45\) |
trager | \(\frac {2 \sqrt {-a c x +c}\, \left (35 a^{4} x^{4}+85 a^{3} x^{3}+102 a^{2} x^{2}+136 a x +272\right )}{315 a^{4}}\) | \(45\) |
pseudoelliptic | \(\frac {2 \sqrt {-c \left (a x -1\right )}\, \left (35 a^{4} x^{4}+85 a^{3} x^{3}+102 a^{2} x^{2}+136 a x +272\right )}{315 a^{4}}\) | \(46\) |
risch | \(-\frac {2 c \left (35 a^{4} x^{4}+85 a^{3} x^{3}+102 a^{2} x^{2}+136 a x +272\right ) \left (a x -1\right )}{315 a^{4} \sqrt {-c \left (a x -1\right )}}\) | \(52\) |
derivativedivides | \(\frac {\frac {2 \left (-a c x +c \right )^{\frac {9}{2}}}{9}-\frac {10 c \left (-a c x +c \right )^{\frac {7}{2}}}{7}+\frac {18 c^{2} \left (-a c x +c \right )^{\frac {5}{2}}}{5}-\frac {14 c^{3} \left (-a c x +c \right )^{\frac {3}{2}}}{3}+4 c^{4} \sqrt {-a c x +c}}{a^{4} c^{4}}\) | \(75\) |
default | \(\frac {\frac {2 \left (-a c x +c \right )^{\frac {9}{2}}}{9}-\frac {10 c \left (-a c x +c \right )^{\frac {7}{2}}}{7}+\frac {18 c^{2} \left (-a c x +c \right )^{\frac {5}{2}}}{5}-\frac {14 c^{3} \left (-a c x +c \right )^{\frac {3}{2}}}{3}+4 c^{4} \sqrt {-a c x +c}}{a^{4} c^{4}}\) | \(75\) |
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Time = 0.24 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.44 \[ \int e^{2 \coth ^{-1}(a x)} x^3 \sqrt {c-a c x} \, dx=\frac {2 \, {\left (35 \, a^{4} x^{4} + 85 \, a^{3} x^{3} + 102 \, a^{2} x^{2} + 136 \, a x + 272\right )} \sqrt {-a c x + c}}{315 \, a^{4}} \]
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Time = 2.18 (sec) , antiderivative size = 134, normalized size of antiderivative = 1.33 \[ \int e^{2 \coth ^{-1}(a x)} x^3 \sqrt {c-a c x} \, dx=\begin {cases} \frac {2 \cdot \left (2 c^{4} \sqrt {- a c x + c} - \frac {7 c^{3} \left (- a c x + c\right )^{\frac {3}{2}}}{3} + \frac {9 c^{2} \left (- a c x + c\right )^{\frac {5}{2}}}{5} - \frac {5 c \left (- a c x + c\right )^{\frac {7}{2}}}{7} + \frac {\left (- a c x + c\right )^{\frac {9}{2}}}{9}\right )}{a^{4} c^{4}} & \text {for}\: a c \neq 0 \\\sqrt {c} \left (\frac {x^{4}}{4} + \frac {2 x^{3}}{3 a} + \frac {x^{2}}{a^{2}} + \frac {2 x}{a^{3}} + \frac {2 \left (\begin {cases} - x & \text {for}\: a = 0 \\\frac {\log {\left (a x - 1 \right )}}{a} & \text {otherwise} \end {cases}\right )}{a^{3}}\right ) & \text {otherwise} \end {cases} \]
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Time = 0.22 (sec) , antiderivative size = 74, normalized size of antiderivative = 0.73 \[ \int e^{2 \coth ^{-1}(a x)} x^3 \sqrt {c-a c x} \, dx=\frac {2 \, {\left (35 \, {\left (-a c x + c\right )}^{\frac {9}{2}} - 225 \, {\left (-a c x + c\right )}^{\frac {7}{2}} c + 567 \, {\left (-a c x + c\right )}^{\frac {5}{2}} c^{2} - 735 \, {\left (-a c x + c\right )}^{\frac {3}{2}} c^{3} + 630 \, \sqrt {-a c x + c} c^{4}\right )}}{315 \, a^{4} c^{4}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 189 vs. \(2 (83) = 166\).
Time = 0.27 (sec) , antiderivative size = 189, normalized size of antiderivative = 1.87 \[ \int e^{2 \coth ^{-1}(a x)} x^3 \sqrt {c-a c x} \, dx=\frac {2 \, {\left (\frac {9 \, {\left (5 \, {\left (a c x - c\right )}^{3} \sqrt {-a c x + c} + 21 \, {\left (a c x - c\right )}^{2} \sqrt {-a c x + c} c - 35 \, {\left (-a c x + c\right )}^{\frac {3}{2}} c^{2} + 35 \, \sqrt {-a c x + c} c^{3}\right )}}{a^{3} c^{3}} + \frac {35 \, {\left (a c x - c\right )}^{4} \sqrt {-a c x + c} + 180 \, {\left (a c x - c\right )}^{3} \sqrt {-a c x + c} c + 378 \, {\left (a c x - c\right )}^{2} \sqrt {-a c x + c} c^{2} - 420 \, {\left (-a c x + c\right )}^{\frac {3}{2}} c^{3} + 315 \, \sqrt {-a c x + c} c^{4}}{a^{3} c^{4}}\right )}}{315 \, a} \]
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Time = 0.05 (sec) , antiderivative size = 83, normalized size of antiderivative = 0.82 \[ \int e^{2 \coth ^{-1}(a x)} x^3 \sqrt {c-a c x} \, dx=\frac {4\,\sqrt {c-a\,c\,x}}{a^4}-\frac {14\,{\left (c-a\,c\,x\right )}^{3/2}}{3\,a^4\,c}+\frac {18\,{\left (c-a\,c\,x\right )}^{5/2}}{5\,a^4\,c^2}-\frac {10\,{\left (c-a\,c\,x\right )}^{7/2}}{7\,a^4\,c^3}+\frac {2\,{\left (c-a\,c\,x\right )}^{9/2}}{9\,a^4\,c^4} \]
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