Optimal. Leaf size=83 \[ -\frac{c^3 \left (1-a^2 x^2\right )^{3/2}}{x}-\frac{1}{2} a c^3 (a x+4) \sqrt{1-a^2 x^2}+2 a c^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )-\frac{1}{2} a c^3 \sin ^{-1}(a x) \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.174132, antiderivative size = 83, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 8, integrand size = 19, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.421, Rules used = {6128, 1807, 815, 844, 216, 266, 63, 208} \[ -\frac{c^3 \left (1-a^2 x^2\right )^{3/2}}{x}-\frac{1}{2} a c^3 (a x+4) \sqrt{1-a^2 x^2}+2 a c^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )-\frac{1}{2} a c^3 \sin ^{-1}(a x) \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 6128
Rule 1807
Rule 815
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)^3}{x^2} \, dx &=c \int \frac{(c-a c x)^2 \sqrt{1-a^2 x^2}}{x^2} \, dx\\ &=-\frac{c^3 \left (1-a^2 x^2\right )^{3/2}}{x}-c \int \frac{\left (2 a c^2+a^2 c^2 x\right ) \sqrt{1-a^2 x^2}}{x} \, dx\\ &=-\frac{1}{2} a c^3 (4+a x) \sqrt{1-a^2 x^2}-\frac{c^3 \left (1-a^2 x^2\right )^{3/2}}{x}+\frac{c \int \frac{-4 a^3 c^2-a^4 c^2 x}{x \sqrt{1-a^2 x^2}} \, dx}{2 a^2}\\ &=-\frac{1}{2} a c^3 (4+a x) \sqrt{1-a^2 x^2}-\frac{c^3 \left (1-a^2 x^2\right )^{3/2}}{x}-\left (2 a c^3\right ) \int \frac{1}{x \sqrt{1-a^2 x^2}} \, dx-\frac{1}{2} \left (a^2 c^3\right ) \int \frac{1}{\sqrt{1-a^2 x^2}} \, dx\\ &=-\frac{1}{2} a c^3 (4+a x) \sqrt{1-a^2 x^2}-\frac{c^3 \left (1-a^2 x^2\right )^{3/2}}{x}-\frac{1}{2} a c^3 \sin ^{-1}(a x)-\left (a c^3\right ) \operatorname{Subst}\left (\int \frac{1}{x \sqrt{1-a^2 x}} \, dx,x,x^2\right )\\ &=-\frac{1}{2} a c^3 (4+a x) \sqrt{1-a^2 x^2}-\frac{c^3 \left (1-a^2 x^2\right )^{3/2}}{x}-\frac{1}{2} a c^3 \sin ^{-1}(a x)+\frac{\left (2 c^3\right ) \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{1}{2} a c^3 (4+a x) \sqrt{1-a^2 x^2}-\frac{c^3 \left (1-a^2 x^2\right )^{3/2}}{x}-\frac{1}{2} a c^3 \sin ^{-1}(a x)+2 a c^3 \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )\\ \end{align*}
Mathematica [A] time = 0.102182, size = 143, normalized size = 1.72 \[ -\frac{c^3 \left (a^4 x^4-4 a^3 x^3-3 a^2 x^2+2 a x \sqrt{1-a^2 x^2} \sin ^{-1}(a x)+2 a x \sqrt{1-a^2 x^2} \sin ^{-1}\left (\frac{\sqrt{1-a x}}{\sqrt{2}}\right )-4 a x \sqrt{1-a^2 x^2} \tanh ^{-1}\left (\sqrt{1-a^2 x^2}\right )+4 a x+2\right )}{2 x \sqrt{1-a^2 x^2}} \]
Warning: Unable to verify antiderivative.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.042, size = 113, normalized size = 1.4 \begin{align*}{\frac{{a}^{2}{c}^{3}x}{2}\sqrt{-{a}^{2}{x}^{2}+1}}-{\frac{{c}^{3}{a}^{2}}{2}\arctan \left ({x\sqrt{{a}^{2}}{\frac{1}{\sqrt{-{a}^{2}{x}^{2}+1}}}} \right ){\frac{1}{\sqrt{{a}^{2}}}}}-2\,{c}^{3}a\sqrt{-{a}^{2}{x}^{2}+1}-{\frac{{c}^{3}}{x}\sqrt{-{a}^{2}{x}^{2}+1}}+2\,{c}^{3}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.
[In]
[Out]
________________________________________________________________________________________
Maxima [A] time = 1.44037, size = 157, normalized size = 1.89 \begin{align*} \frac{1}{2} \, \sqrt{-a^{2} x^{2} + 1} a^{2} c^{3} x - \frac{a^{2} c^{3} \arcsin \left (\frac{a^{2} x}{\sqrt{a^{2}}}\right )}{2 \, \sqrt{a^{2}}} + 2 \, a c^{3} \log \left (\frac{2 \, \sqrt{-a^{2} x^{2} + 1}}{{\left | x \right |}} + \frac{2}{{\left | x \right |}}\right ) - 2 \, \sqrt{-a^{2} x^{2} + 1} a c^{3} - \frac{\sqrt{-a^{2} x^{2} + 1} c^{3}}{x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A] time = 1.54244, size = 228, normalized size = 2.75 \begin{align*} \frac{2 \, a c^{3} x \arctan \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{a x}\right ) - 4 \, a c^{3} x \log \left (\frac{\sqrt{-a^{2} x^{2} + 1} - 1}{x}\right ) - 4 \, a c^{3} x +{\left (a^{2} c^{3} x^{2} - 4 \, a c^{3} x - 2 \, c^{3}\right )} \sqrt{-a^{2} x^{2} + 1}}{2 \, x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [C] time = 7.11276, size = 199, normalized size = 2.4 \begin{align*} - a^{4} c^{3} \left (\begin{cases} - \frac{i x \sqrt{a^{2} x^{2} - 1}}{2 a^{2}} - \frac{i \operatorname{acosh}{\left (a x \right )}}{2 a^{3}} & \text{for}\: \left |{a^{2} x^{2}}\right | > 1 \\\frac{x^{3}}{2 \sqrt{- a^{2} x^{2} + 1}} - \frac{x}{2 a^{2} \sqrt{- a^{2} x^{2} + 1}} + \frac{\operatorname{asin}{\left (a x \right )}}{2 a^{3}} & \text{otherwise} \end{cases}\right ) + 2 a^{3} c^{3} \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 ) - 2 a c^{3} \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^{3} \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.
[In]
[Out]
________________________________________________________________________________________
Giac [B] time = 1.27673, size = 205, normalized size = 2.47 \begin{align*} \frac{a^{4} c^{3} x}{2 \,{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )}{\left | a \right |}} - \frac{a^{2} c^{3} \arcsin \left (a x\right ) \mathrm{sgn}\left (a\right )}{2 \,{\left | a \right |}} + \frac{2 \, a^{2} c^{3} \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{{\left (\sqrt{-a^{2} x^{2} + 1}{\left | a \right |} + a\right )} c^{3}}{2 \, x{\left | a \right |}} + \frac{1}{2} \,{\left (a^{2} c^{3} x - 4 \, a c^{3}\right )} \sqrt{-a^{2} x^{2} + 1} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]