Optimal. Leaf size=92 \[ \frac{a b^2 \tanh ^{-1}\left (\frac{a (a+b x)+1}{\sqrt{a^2+1} \sqrt{(a+b x)^2+1}}\right )}{2 \left (a^2+1\right )^{3/2}}-\frac{b \sqrt{(a+b x)^2+1}}{2 \left (a^2+1\right ) x}-\frac{\sinh ^{-1}(a+b x)}{2 x^2} \]
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Rubi [A] time = 0.102091, antiderivative size = 92, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 5, integrand size = 10, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.5, Rules used = {5865, 5801, 731, 725, 206} \[ \frac{a b^2 \tanh ^{-1}\left (\frac{a (a+b x)+1}{\sqrt{a^2+1} \sqrt{(a+b x)^2+1}}\right )}{2 \left (a^2+1\right )^{3/2}}-\frac{b \sqrt{(a+b x)^2+1}}{2 \left (a^2+1\right ) x}-\frac{\sinh ^{-1}(a+b x)}{2 x^2} \]
Antiderivative was successfully verified.
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Rule 5865
Rule 5801
Rule 731
Rule 725
Rule 206
Rubi steps
\begin{align*} \int \frac{\sinh ^{-1}(a+b x)}{x^3} \, dx &=\frac{\operatorname{Subst}\left (\int \frac{\sinh ^{-1}(x)}{\left (-\frac{a}{b}+\frac{x}{b}\right )^3} \, dx,x,a+b x\right )}{b}\\ &=-\frac{\sinh ^{-1}(a+b x)}{2 x^2}+\frac{1}{2} \operatorname{Subst}\left (\int \frac{1}{\left (-\frac{a}{b}+\frac{x}{b}\right )^2 \sqrt{1+x^2}} \, dx,x,a+b x\right )\\ &=-\frac{b \sqrt{1+(a+b x)^2}}{2 \left (1+a^2\right ) x}-\frac{\sinh ^{-1}(a+b x)}{2 x^2}-\frac{(a b) \operatorname{Subst}\left (\int \frac{1}{\left (-\frac{a}{b}+\frac{x}{b}\right ) \sqrt{1+x^2}} \, dx,x,a+b x\right )}{2 \left (1+a^2\right )}\\ &=-\frac{b \sqrt{1+(a+b x)^2}}{2 \left (1+a^2\right ) x}-\frac{\sinh ^{-1}(a+b x)}{2 x^2}+\frac{(a b) \operatorname{Subst}\left (\int \frac{1}{\frac{1}{b^2}+\frac{a^2}{b^2}-x^2} \, dx,x,\frac{\frac{1}{b}+\frac{a (a+b x)}{b}}{\sqrt{1+(a+b x)^2}}\right )}{2 \left (1+a^2\right )}\\ &=-\frac{b \sqrt{1+(a+b x)^2}}{2 \left (1+a^2\right ) x}-\frac{\sinh ^{-1}(a+b x)}{2 x^2}+\frac{a b^2 \tanh ^{-1}\left (\frac{1+a (a+b x)}{\sqrt{1+a^2} \sqrt{1+(a+b x)^2}}\right )}{2 \left (1+a^2\right )^{3/2}}\\ \end{align*}
Mathematica [A] time = 0.166296, size = 110, normalized size = 1.2 \[ -\frac{\frac{b x \left (\sqrt{a^2+1} \sqrt{a^2+2 a b x+b^2 x^2+1}-a b x \log \left (\sqrt{a^2+1} \sqrt{a^2+2 a b x+b^2 x^2+1}+a^2+a b x+1\right )+a b x \log (x)\right )}{\left (a^2+1\right )^{3/2}}+\sinh ^{-1}(a+b x)}{2 x^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.008, size = 106, normalized size = 1.2 \begin{align*} -{\frac{{\it Arcsinh} \left ( bx+a \right ) }{2\,{x}^{2}}}-{\frac{b}{ \left ( 2\,{a}^{2}+2 \right ) x}\sqrt{{b}^{2}{x}^{2}+2\,xab+{a}^{2}+1}}+{\frac{{b}^{2}a}{2}\ln \left ({\frac{1}{bx} \left ( 2\,{a}^{2}+2+2\,xab+2\,\sqrt{{a}^{2}+1}\sqrt{{b}^{2}{x}^{2}+2\,xab+{a}^{2}+1} \right ) } \right ) \left ({a}^{2}+1 \right ) ^{-{\frac{3}{2}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 2.708, size = 564, normalized size = 6.13 \begin{align*} \frac{\sqrt{a^{2} + 1} a b^{2} x^{2} \log \left (-\frac{a^{2} b x + a^{3} + \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1}{\left (a^{2} + \sqrt{a^{2} + 1} a + 1\right )} +{\left (a b x + a^{2} + 1\right )} \sqrt{a^{2} + 1} + a}{x}\right ) -{\left (a^{2} + 1\right )} b^{2} x^{2} +{\left (a^{4} + 2 \, a^{2} + 1\right )} x^{2} \log \left (-b x - a + \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right ) - \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1}{\left (a^{2} + 1\right )} b x -{\left (a^{4} -{\left (a^{4} + 2 \, a^{2} + 1\right )} x^{2} + 2 \, a^{2} + 1\right )} \log \left (b x + a + \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}{2 \,{\left (a^{4} + 2 \, a^{2} + 1\right )} x^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\operatorname{asinh}{\left (a + b x \right )}}{x^{3}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: NotImplementedError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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