Optimal. Leaf size=58 \[ -\frac{c^2 (a x+1) \sqrt{1-a^2 x^2}}{x}+a c^2 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )-a c^2 \sin ^{-1}(a x) \]
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Rubi [A] time = 0.103498, antiderivative size = 58, normalized size of antiderivative = 1., number of steps used = 7, number of rules used = 7, integrand size = 19, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.368, Rules used = {6128, 813, 844, 216, 266, 63, 208} \[ -\frac{c^2 (a x+1) \sqrt{1-a^2 x^2}}{x}+a c^2 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )-a c^2 \sin ^{-1}(a x) \]
Antiderivative was successfully verified.
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Rule 6128
Rule 813
Rule 844
Rule 216
Rule 266
Rule 63
Rule 208
Rubi steps
\begin{align*} \int \frac{e^{\tanh ^{-1}(a x)} (c-a c x)^2}{x^2} \, dx &=c \int \frac{(c-a c x) \sqrt{1-a^2 x^2}}{x^2} \, dx\\ &=-\frac{c^2 (1+a x) \sqrt{1-a^2 x^2}}{x}-\frac{1}{2} c \int \frac{2 a c+2 a^2 c x}{x \sqrt{1-a^2 x^2}} \, dx\\ &=-\frac{c^2 (1+a x) \sqrt{1-a^2 x^2}}{x}-\left (a c^2\right ) \int \frac{1}{x \sqrt{1-a^2 x^2}} \, dx-\left (a^2 c^2\right ) \int \frac{1}{\sqrt{1-a^2 x^2}} \, dx\\ &=-\frac{c^2 (1+a x) \sqrt{1-a^2 x^2}}{x}-a c^2 \sin ^{-1}(a x)-\frac{1}{2} \left (a c^2\right ) \operatorname{Subst}\left (\int \frac{1}{x \sqrt{1-a^2 x}} \, dx,x,x^2\right )\\ &=-\frac{c^2 (1+a x) \sqrt{1-a^2 x^2}}{x}-a c^2 \sin ^{-1}(a x)+\frac{c^2 \operatorname{Subst}\left (\int \frac{1}{\frac{1}{a^2}-\frac{x^2}{a^2}} \, dx,x,\sqrt{1-a^2 x^2}\right )}{a}\\ &=-\frac{c^2 (1+a x) \sqrt{1-a^2 x^2}}{x}-a c^2 \sin ^{-1}(a x)+a c^2 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )\\ \end{align*}
Mathematica [A] time = 0.17488, size = 84, normalized size = 1.45 \[ \frac{1}{2} c^2 \left (\frac{2 (a x-1) (a x+1)^2}{x \sqrt{1-a^2 x^2}}+2 a \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )-a \sin ^{-1}(a x)+2 a \sin ^{-1}\left (\frac{\sqrt{1-a x}}{\sqrt{2}}\right )\right ) \]
Warning: Unable to verify antiderivative.
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Maple [A] time = 0.039, size = 91, normalized size = 1.6 \begin{align*} -{c}^{2}a\sqrt{-{a}^{2}{x}^{2}+1}-{{a}^{2}{c}^{2}\arctan \left ({x\sqrt{{a}^{2}}{\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}} \right ){\frac{1}{\sqrt{{a}^{2}}}}}-{\frac{{c}^{2}}{x}\sqrt{-{a}^{2}{x}^{2}+1}}+{c}^{2}a{\it Artanh} \left ({\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}} \right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.43454, size = 127, normalized size = 2.19 \begin{align*} -\frac{a^{2} c^{2} \arcsin \left (\frac{a^{2} x}{\sqrt{a^{2}}}\right )}{\sqrt{a^{2}}} + a c^{2} \log \left (\frac{2 \, \sqrt{-a^{2} x^{2} + 1}}{{\left | x \right |}} + \frac{2}{{\left | x \right |}}\right ) - \sqrt{-a^{2} x^{2} + 1} a c^{2} - \frac{\sqrt{-a^{2} x^{2} + 1} c^{2}}{x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.59955, size = 193, normalized size = 3.33 \begin{align*} \frac{2 \, a c^{2} x \arctan \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{a x}\right ) - a c^{2} x \log \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{x}\right ) - a c^{2} x -{\left (a c^{2} x + c^{2}\right )} \sqrt{-a^{2} x^{2} + 1}}{x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 4.60682, size = 153, normalized size = 2.64 \begin{align*} a^{3} c^{2} \left (\begin{cases} \frac{x^{2}}{2} & \text{for}\: a^{2} = 0 \\- \frac{\sqrt{- a^{2} x^{2} + 1}}{a^{2}} & \text{otherwise} \end{cases}\right ) - a^{2} c^{2} \left (\begin{cases} \sqrt{\frac{1}{a^{2}}} \operatorname{asin}{\left (x \sqrt{a^{2}} \right )} & \text{for}\: a^{2} > 0 \\\sqrt{- \frac{1}{a^{2}}} \operatorname{asinh}{\left (x \sqrt{- a^{2}} \right )} & \text{for}\: a^{2} < 0 \end{cases}\right ) - a c^{2} \left (\begin{cases} - \operatorname{acosh}{\left (\frac{1}{a x} \right )} & \text{for}\: \frac{1}{\left |{a^{2} x^{2}}\right |} > 1 \\i \operatorname{asin}{\left (\frac{1}{a x} \right )} & \text{otherwise} \end{cases}\right ) + c^{2} \left (\begin{cases} - \frac{i \sqrt{a^{2} x^{2} - 1}}{x} & \text{for}\: \left |{a^{2} x^{2}}\right | > 1 \\- \frac{\sqrt{- a^{2} x^{2} + 1}}{x} & \text{otherwise} \end{cases}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] time = 1.25461, size = 189, normalized size = 3.26 \begin{align*} \frac{a^{4} c^{2} x}{2 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}{\left | a \right |}} - \frac{a^{2} c^{2} \arcsin \left (a x\right ) \mathrm{sgn}\left (a\right )}{{\left | a \right |}} + \frac{a^{2} c^{2} \log \left (\frac{{\left | -2 \, \sqrt{-a^{2} x^{2} + 1}{\left | a \right |} - 2 \, a \right |}}{2 \, a^{2}{\left | x \right |}}\right )}{{\left | a \right |}} - \sqrt{-a^{2} x^{2} + 1} a c^{2} - \frac{{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )} c^{2}}{2 \, x{\left | a \right |}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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