Optimal. Leaf size=122 \[ -\frac{23 \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{c}}\right )}{4 a^2}+\frac{4 \sqrt{2} \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{2} \sqrt{c}}\right )}{a^2}-\frac{1}{2} x^2 \sqrt{c-\frac{c}{a x}}+\frac{9 x \sqrt{c-\frac{c}{a x}}}{4 a} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.240319, antiderivative size = 122, normalized size of antiderivative = 1., number of steps used = 11, number of rules used = 9, integrand size = 25, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.36, Rules used = {6133, 25, 514, 446, 98, 151, 156, 63, 208} \[ -\frac{23 \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{c}}\right )}{4 a^2}+\frac{4 \sqrt{2} \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{2} \sqrt{c}}\right )}{a^2}-\frac{1}{2} x^2 \sqrt{c-\frac{c}{a x}}+\frac{9 x \sqrt{c-\frac{c}{a x}}}{4 a} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 6133
Rule 25
Rule 514
Rule 446
Rule 98
Rule 151
Rule 156
Rule 63
Rule 208
Rubi steps
\begin{align*} \int e^{-2 \tanh ^{-1}(a x)} \sqrt{c-\frac{c}{a x}} x \, dx &=\int \frac{\sqrt{c-\frac{c}{a x}} x (1-a x)}{1+a x} \, dx\\ &=-\frac{a \int \frac{\left (c-\frac{c}{a x}\right )^{3/2} x^2}{1+a x} \, dx}{c}\\ &=-\frac{a \int \frac{\left (c-\frac{c}{a x}\right )^{3/2} x}{a+\frac{1}{x}} \, dx}{c}\\ &=\frac{a \operatorname{Subst}\left (\int \frac{\left (c-\frac{c x}{a}\right )^{3/2}}{x^3 (a+x)} \, dx,x,\frac{1}{x}\right )}{c}\\ &=-\frac{1}{2} \sqrt{c-\frac{c}{a x}} x^2-\frac{\operatorname{Subst}\left (\int \frac{\frac{9 c^2}{2}-\frac{7 c^2 x}{2 a}}{x^2 (a+x) \sqrt{c-\frac{c x}{a}}} \, dx,x,\frac{1}{x}\right )}{2 c}\\ &=\frac{9 \sqrt{c-\frac{c}{a x}} x}{4 a}-\frac{1}{2} \sqrt{c-\frac{c}{a x}} x^2+\frac{\operatorname{Subst}\left (\int \frac{\frac{23 c^3}{4}-\frac{9 c^3 x}{4 a}}{x (a+x) \sqrt{c-\frac{c x}{a}}} \, dx,x,\frac{1}{x}\right )}{2 a c^2}\\ &=\frac{9 \sqrt{c-\frac{c}{a x}} x}{4 a}-\frac{1}{2} \sqrt{c-\frac{c}{a x}} x^2+\frac{(23 c) \operatorname{Subst}\left (\int \frac{1}{x \sqrt{c-\frac{c x}{a}}} \, dx,x,\frac{1}{x}\right )}{8 a^2}-\frac{(4 c) \operatorname{Subst}\left (\int \frac{1}{(a+x) \sqrt{c-\frac{c x}{a}}} \, dx,x,\frac{1}{x}\right )}{a^2}\\ &=\frac{9 \sqrt{c-\frac{c}{a x}} x}{4 a}-\frac{1}{2} \sqrt{c-\frac{c}{a x}} x^2-\frac{23 \operatorname{Subst}\left (\int \frac{1}{a-\frac{a x^2}{c}} \, dx,x,\sqrt{c-\frac{c}{a x}}\right )}{4 a}+\frac{8 \operatorname{Subst}\left (\int \frac{1}{2 a-\frac{a x^2}{c}} \, dx,x,\sqrt{c-\frac{c}{a x}}\right )}{a}\\ &=\frac{9 \sqrt{c-\frac{c}{a x}} x}{4 a}-\frac{1}{2} \sqrt{c-\frac{c}{a x}} x^2-\frac{23 \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{c}}\right )}{4 a^2}+\frac{4 \sqrt{2} \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{2} \sqrt{c}}\right )}{a^2}\\ \end{align*}
Mathematica [A] time = 0.0788897, size = 100, normalized size = 0.82 \[ \frac{a x (9-2 a x) \sqrt{c-\frac{c}{a x}}-23 \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{c}}\right )+16 \sqrt{2} \sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c-\frac{c}{a x}}}{\sqrt{2} \sqrt{c}}\right )}{4 a^2} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [B] time = 0.115, size = 215, normalized size = 1.8 \begin{align*}{\frac{x}{8}\sqrt{{\frac{c \left ( ax-1 \right ) }{ax}}} \left ( -4\,\sqrt{a{x}^{2}-x}{a}^{7/2}\sqrt{{a}^{-1}}x+16\,{a}^{5/2}\sqrt{{a}^{-1}}\sqrt{ \left ( ax-1 \right ) x}+2\,\sqrt{a{x}^{2}-x}{a}^{5/2}\sqrt{{a}^{-1}}-16\,{a}^{3/2}\sqrt{2}\ln \left ({\frac{2\,\sqrt{2}\sqrt{{a}^{-1}}\sqrt{ \left ( ax-1 \right ) x}a-3\,ax+1}{ax+1}} \right ) -24\,{a}^{2}\ln \left ( 1/2\,{\frac{2\,\sqrt{ \left ( ax-1 \right ) x}\sqrt{a}+2\,ax-1}{\sqrt{a}}} \right ) \sqrt{{a}^{-1}}+\ln \left ({\frac{1}{2} \left ( 2\,\sqrt{a{x}^{2}-x}\sqrt{a}+2\,ax-1 \right ){\frac{1}{\sqrt{a}}}} \right ) \sqrt{{a}^{-1}}{a}^{2} \right ){\frac{1}{\sqrt{ \left ( ax-1 \right ) x}}}{a}^{-{\frac{7}{2}}}{\frac{1}{\sqrt{{a}^{-1}}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} -\int \frac{{\left (a^{2} x^{2} - 1\right )} \sqrt{c - \frac{c}{a x}} x}{{\left (a x + 1\right )}^{2}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A] time = 2.52284, size = 568, normalized size = 4.66 \begin{align*} \left [\frac{16 \, \sqrt{2} \sqrt{c} \log \left (-\frac{2 \, \sqrt{2} a \sqrt{c} x \sqrt{\frac{a c x - c}{a x}} + 3 \, a c x - c}{a x + 1}\right ) - 2 \,{\left (2 \, a^{2} x^{2} - 9 \, a x\right )} \sqrt{\frac{a c x - c}{a x}} + 23 \, \sqrt{c} \log \left (-2 \, a c x + 2 \, a \sqrt{c} x \sqrt{\frac{a c x - c}{a x}} + c\right )}{8 \, a^{2}}, -\frac{16 \, \sqrt{2} \sqrt{-c} \arctan \left (\frac{\sqrt{2} \sqrt{-c} \sqrt{\frac{a c x - c}{a x}}}{2 \, c}\right ) +{\left (2 \, a^{2} x^{2} - 9 \, a x\right )} \sqrt{\frac{a c x - c}{a x}} - 23 \, \sqrt{-c} \arctan \left (\frac{\sqrt{-c} \sqrt{\frac{a c x - c}{a x}}}{c}\right )}{4 \, a^{2}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} - \int - \frac{x \sqrt{c - \frac{c}{a x}}}{a x + 1}\, dx - \int \frac{a x^{2} \sqrt{c - \frac{c}{a x}}}{a x + 1}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: TypeError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]