Optimal. Leaf size=21 \[ \frac {1}{2} \sqrt {x^2+1} x+\frac {1}{2} \sinh ^{-1}(x) \]
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Rubi [A] time = 0.00, antiderivative size = 21, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 9, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {195, 215} \[ \frac {1}{2} \sqrt {x^2+1} x+\frac {1}{2} \sinh ^{-1}(x) \]
Antiderivative was successfully verified.
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Rule 195
Rule 215
Rubi steps
\begin {align*} \int \sqrt {1+x^2} \, dx &=\frac {1}{2} x \sqrt {1+x^2}+\frac {1}{2} \int \frac {1}{\sqrt {1+x^2}} \, dx\\ &=\frac {1}{2} x \sqrt {1+x^2}+\frac {1}{2} \sinh ^{-1}(x)\\ \end {align*}
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Mathematica [A] time = 0.00, size = 18, normalized size = 0.86 \[ \frac {1}{2} \left (\sqrt {x^2+1} x+\sinh ^{-1}(x)\right ) \]
Antiderivative was successfully verified.
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fricas [A] time = 0.42, size = 25, normalized size = 1.19 \[ \frac {1}{2} \, \sqrt {x^{2} + 1} x - \frac {1}{2} \, \log \left (-x + \sqrt {x^{2} + 1}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.37, size = 25, normalized size = 1.19 \[ \frac {1}{2} \, \sqrt {x^{2} + 1} x - \frac {1}{2} \, \log \left (-x + \sqrt {x^{2} + 1}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.00, size = 16, normalized size = 0.76 \[ \frac {\sqrt {x^{2}+1}\, x}{2}+\frac {\arcsinh \relax (x )}{2} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 1.95, size = 15, normalized size = 0.71 \[ \frac {1}{2} \, \sqrt {x^{2} + 1} x + \frac {1}{2} \, \operatorname {arsinh}\relax (x) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.03, size = 15, normalized size = 0.71 \[ \frac {\mathrm {asinh}\relax (x)}{2}+\frac {x\,\sqrt {x^2+1}}{2} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.19, size = 15, normalized size = 0.71 \[ \frac {x \sqrt {x^{2} + 1}}{2} + \frac {\operatorname {asinh}{\relax (x )}}{2} \]
Verification of antiderivative is not currently implemented for this CAS.
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