Optimal. Leaf size=6 \[ \sinh ^{-1}\left (\frac{x}{3}\right ) \]
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Rubi [A] time = 0.0011798, antiderivative size = 6, normalized size of antiderivative = 1., number of steps used = 1, number of rules used = 1, integrand size = 9, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.111, Rules used = {215} \[ \sinh ^{-1}\left (\frac{x}{3}\right ) \]
Antiderivative was successfully verified.
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Rule 215
Rubi steps
\begin{align*} \int \frac{1}{\sqrt{9+x^2}} \, dx &=\sinh ^{-1}\left (\frac{x}{3}\right )\\ \end{align*}
Mathematica [A] time = 0.0034179, size = 6, normalized size = 1. \[ \sinh ^{-1}\left (\frac{x}{3}\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.001, size = 5, normalized size = 0.8 \begin{align*}{\it Arcsinh} \left ({\frac{x}{3}} \right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.40911, size = 5, normalized size = 0.83 \begin{align*} \operatorname{arsinh}\left (\frac{1}{3} \, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 1.92847, size = 35, normalized size = 5.83 \begin{align*} -\log \left (-x + \sqrt{x^{2} + 9}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.12484, size = 3, normalized size = 0.5 \begin{align*} \operatorname{asinh}{\left (\frac{x}{3} \right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] time = 1.05858, size = 19, normalized size = 3.17 \begin{align*} -\log \left (-x + \sqrt{x^{2} + 9}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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