Optimal. Leaf size=84 \[ \frac {1}{3} x^2 \sqrt {c-a^2 c x^2}+\frac {(5-3 a x) \sqrt {c-a^2 c x^2}}{3 a^2}+\frac {\sqrt {c} \tan ^{-1}\left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )}{a^2} \]
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Rubi [A] time = 0.25, antiderivative size = 84, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, integrand size = 25, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.240, Rules used = {6167, 6152, 1809, 780, 217, 203} \[ \frac {1}{3} x^2 \sqrt {c-a^2 c x^2}+\frac {(5-3 a x) \sqrt {c-a^2 c x^2}}{3 a^2}+\frac {\sqrt {c} \tan ^{-1}\left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )}{a^2} \]
Antiderivative was successfully verified.
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Rule 203
Rule 217
Rule 780
Rule 1809
Rule 6152
Rule 6167
Rubi steps
\begin {align*} \int e^{-2 \coth ^{-1}(a x)} x \sqrt {c-a^2 c x^2} \, dx &=-\int e^{-2 \tanh ^{-1}(a x)} x \sqrt {c-a^2 c x^2} \, dx\\ &=-\left (c \int \frac {x (1-a x)^2}{\sqrt {c-a^2 c x^2}} \, dx\right )\\ &=\frac {1}{3} x^2 \sqrt {c-a^2 c x^2}+\frac {\int \frac {x \left (-5 a^2 c+6 a^3 c x\right )}{\sqrt {c-a^2 c x^2}} \, dx}{3 a^2}\\ &=\frac {1}{3} x^2 \sqrt {c-a^2 c x^2}+\frac {(5-3 a x) \sqrt {c-a^2 c x^2}}{3 a^2}+\frac {c \int \frac {1}{\sqrt {c-a^2 c x^2}} \, dx}{a}\\ &=\frac {1}{3} x^2 \sqrt {c-a^2 c x^2}+\frac {(5-3 a x) \sqrt {c-a^2 c x^2}}{3 a^2}+\frac {c \operatorname {Subst}\left (\int \frac {1}{1+a^2 c x^2} \, dx,x,\frac {x}{\sqrt {c-a^2 c x^2}}\right )}{a}\\ &=\frac {1}{3} x^2 \sqrt {c-a^2 c x^2}+\frac {(5-3 a x) \sqrt {c-a^2 c x^2}}{3 a^2}+\frac {\sqrt {c} \tan ^{-1}\left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )}{a^2}\\ \end {align*}
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Mathematica [A] time = 0.09, size = 79, normalized size = 0.94 \[ \frac {\left (a^2 x^2-3 a x+5\right ) \sqrt {c-a^2 c x^2}-3 \sqrt {c} \tan ^{-1}\left (\frac {a x \sqrt {c-a^2 c x^2}}{\sqrt {c} \left (a^2 x^2-1\right )}\right )}{3 a^2} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.60, size = 150, normalized size = 1.79 \[ \left [\frac {2 \, \sqrt {-a^{2} c x^{2} + c} {\left (a^{2} x^{2} - 3 \, a x + 5\right )} + 3 \, \sqrt {-c} \log \left (2 \, a^{2} c x^{2} + 2 \, \sqrt {-a^{2} c x^{2} + c} a \sqrt {-c} x - c\right )}{6 \, a^{2}}, \frac {\sqrt {-a^{2} c x^{2} + c} {\left (a^{2} x^{2} - 3 \, a x + 5\right )} - 3 \, \sqrt {c} \arctan \left (\frac {\sqrt {-a^{2} c x^{2} + c} a \sqrt {c} x}{a^{2} c x^{2} - c}\right )}{3 \, a^{2}}\right ] \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.15, size = 73, normalized size = 0.87 \[ \frac {1}{3} \, \sqrt {-a^{2} c x^{2} + c} {\left ({\left (x - \frac {3}{a}\right )} x + \frac {5}{a^{2}}\right )} - \frac {c \log \left ({\left | -\sqrt {-a^{2} c} x + \sqrt {-a^{2} c x^{2} + c} \right |}\right )}{a \sqrt {-c} {\left | a \right |}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.05, size = 156, normalized size = 1.86 \[ -\frac {\left (-a^{2} c \,x^{2}+c \right )^{\frac {3}{2}}}{3 a^{2} c}-\frac {x \sqrt {-a^{2} c \,x^{2}+c}}{a}-\frac {c \arctan \left (\frac {\sqrt {a^{2} c}\, x}{\sqrt {-a^{2} c \,x^{2}+c}}\right )}{a \sqrt {a^{2} c}}+\frac {2 \sqrt {-\left (x +\frac {1}{a}\right )^{2} a^{2} c +2 \left (x +\frac {1}{a}\right ) a c}}{a^{2}}+\frac {2 c \arctan \left (\frac {\sqrt {a^{2} c}\, x}{\sqrt {-\left (x +\frac {1}{a}\right )^{2} a^{2} c +2 \left (x +\frac {1}{a}\right ) a c}}\right )}{a \sqrt {a^{2} c}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.42, size = 70, normalized size = 0.83 \[ -\frac {\sqrt {-a^{2} c x^{2} + c} x}{a} + \frac {\sqrt {c} \arcsin \left (a x\right )}{a^{2}} + \frac {2 \, \sqrt {-a^{2} c x^{2} + c}}{a^{2}} - \frac {{\left (-a^{2} c x^{2} + c\right )}^{\frac {3}{2}}}{3 \, a^{2} c} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int \frac {x\,\sqrt {c-a^2\,c\,x^2}\,\left (a\,x-1\right )}{a\,x+1} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x \sqrt {- c \left (a x - 1\right ) \left (a x + 1\right )} \left (a x - 1\right )}{a x + 1}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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