Optimal. Leaf size=58 \[ \frac{c \sqrt{1-a^2 x^2} (1-a x)}{a^2 x}+\frac{c \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )}{a}+\frac{c \sin ^{-1}(a x)}{a} \]
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Rubi [A] time = 0.101278, antiderivative size = 58, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 8, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.444, Rules used = {6157, 6148, 813, 844, 216, 266, 63, 208} \[ \frac{c \sqrt{1-a^2 x^2} (1-a x)}{a^2 x}+\frac{c \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )}{a}+\frac{c \sin ^{-1}(a x)}{a} \]
Antiderivative was successfully verified.
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Rule 6157
Rule 6148
Rule 813
Rule 844
Rule 216
Rule 266
Rule 63
Rule 208
Rubi steps
\begin{align*} \int e^{\tanh ^{-1}(a x)} \left (c-\frac{c}{a^2 x^2}\right ) \, dx &=-\frac{c \int \frac{e^{\tanh ^{-1}(a x)} \left (1-a^2 x^2\right )}{x^2} \, dx}{a^2}\\ &=-\frac{c \int \frac{(1+a x) \sqrt{1-a^2 x^2}}{x^2} \, dx}{a^2}\\ &=\frac{c (1-a x) \sqrt{1-a^2 x^2}}{a^2 x}+\frac{c \int \frac{-2 a+2 a^2 x}{x \sqrt{1-a^2 x^2}} \, dx}{2 a^2}\\ &=\frac{c (1-a x) \sqrt{1-a^2 x^2}}{a^2 x}+c \int \frac{1}{\sqrt{1-a^2 x^2}} \, dx-\frac{c \int \frac{1}{x \sqrt{1-a^2 x^2}} \, dx}{a}\\ &=\frac{c (1-a x) \sqrt{1-a^2 x^2}}{a^2 x}+\frac{c \sin ^{-1}(a x)}{a}-\frac{c \operatorname{Subst}\left (\int \frac{1}{x \sqrt{1-a^2 x}} \, dx,x,x^2\right )}{2 a}\\ &=\frac{c (1-a x) \sqrt{1-a^2 x^2}}{a^2 x}+\frac{c \sin ^{-1}(a x)}{a}+\frac{c \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^3}\\ &=\frac{c (1-a x) \sqrt{1-a^2 x^2}}{a^2 x}+\frac{c \sin ^{-1}(a x)}{a}+\frac{c \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )}{a}\\ \end{align*}
Mathematica [A] time = 0.0449822, size = 55, normalized size = 0.95 \[ \frac{c \left (\sqrt{1-a^2 x^2} (1-a x)+a x \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )+a x \sin ^{-1}(a x)\right )}{a^2 x} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.044, size = 85, normalized size = 1.5 \begin{align*} -{\frac{c}{a}\sqrt{-{a}^{2}{x}^{2}+1}}+{c\arctan \left ({x\sqrt{{a}^{2}}{\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}} \right ){\frac{1}{\sqrt{{a}^{2}}}}}+{\frac{c}{{a}^{2}x}\sqrt{-{a}^{2}{x}^{2}+1}}+{\frac{c}{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 = 1.47169, size = 119, normalized size = 2.05 \begin{align*} \frac{c \arcsin \left (\frac{a^{2} x}{\sqrt{a^{2}}}\right )}{\sqrt{a^{2}}} + \frac{c \log \left (\frac{2 \, \sqrt{-a^{2} x^{2} + 1}}{{\left | x \right |}} + \frac{2}{{\left | x \right |}}\right )}{a} - \frac{\sqrt{-a^{2} x^{2} + 1} c}{a} + \frac{\sqrt{-a^{2} x^{2} + 1} c}{a^{2} x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.1198, size = 189, normalized size = 3.26 \begin{align*} -\frac{2 \, a c x \arctan \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{a x}\right ) + a c x \log \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{x}\right ) + a c x + \sqrt{-a^{2} x^{2} + 1}{\left (a c x - c\right )}}{a^{2} x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 9.03592, size = 144, normalized size = 2.48 \begin{align*} a c \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 ) + c \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 ) - \frac{c \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 )}{a} - \frac{c \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 )}{a^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] time = 1.19972, size = 173, normalized size = 2.98 \begin{align*} -\frac{a^{2} c x}{2 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}{\left | a \right |}} + \frac{c \arcsin \left (a x\right ) \mathrm{sgn}\left (a\right )}{{\left | a \right |}} + \frac{c \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 |}} - \frac{\sqrt{-a^{2} x^{2} + 1} c}{a} + \frac{{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )} c}{2 \, a^{2} x{\left | a \right |}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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