Optimal. Leaf size=37 \[ \frac {1}{3} \left (\sqrt {x^2+1}+x\right )^{3/2}-\frac {1}{\sqrt {\sqrt {x^2+1}+x}} \]
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Rubi [A] time = 0.01, antiderivative size = 37, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {2117, 14} \begin {gather*} \frac {1}{3} \left (\sqrt {x^2+1}+x\right )^{3/2}-\frac {1}{\sqrt {\sqrt {x^2+1}+x}} \end {gather*}
Antiderivative was successfully verified.
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Rule 14
Rule 2117
Rubi steps
\begin {align*} \int \sqrt {x+\sqrt {1+x^2}} \, dx &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {1+x^2}{x^{3/2}} \, dx,x,x+\sqrt {1+x^2}\right )\\ &=\frac {1}{2} \operatorname {Subst}\left (\int \left (\frac {1}{x^{3/2}}+\sqrt {x}\right ) \, dx,x,x+\sqrt {1+x^2}\right )\\ &=-\frac {1}{\sqrt {x+\sqrt {1+x^2}}}+\frac {1}{3} \left (x+\sqrt {1+x^2}\right )^{3/2}\\ \end {align*}
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Mathematica [A] time = 0.01, size = 35, normalized size = 0.95 \begin {gather*} \frac {2 \left (x^2+\sqrt {x^2+1} x-1\right )}{3 \sqrt {\sqrt {x^2+1}+x}} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [A] time = 0.04, size = 37, normalized size = 1.00 \begin {gather*} -\frac {1}{\sqrt {x+\sqrt {1+x^2}}}+\frac {1}{3} \left (x+\sqrt {1+x^2}\right )^{3/2} \end {gather*}
Antiderivative was successfully verified.
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fricas [A] time = 0.46, size = 26, normalized size = 0.70 \begin {gather*} \frac {2}{3} \, {\left (2 \, x - \sqrt {x^{2} + 1}\right )} \sqrt {x + \sqrt {x^{2} + 1}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [F] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \sqrt {x + \sqrt {x^{2} + 1}}\,{d x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [C] time = 0.02, size = 57, normalized size = 1.54
method | result | size |
meijerg | \(\frac {\frac {16 \sqrt {\pi }\, \sqrt {2}\, x^{\frac {3}{2}} \left (1-\frac {1}{x^{2}}\right ) \cosh \left (\frac {\arcsinh \left (\frac {1}{x}\right )}{2}\right )}{3}+\frac {16 \sqrt {\pi }\, \sqrt {2}\, \sqrt {x}\, \sqrt {1+\frac {1}{x^{2}}}\, \sinh \left (\frac {\arcsinh \left (\frac {1}{x}\right )}{2}\right )}{3}}{8 \sqrt {\pi }}\) | \(57\) |
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \sqrt {x + \sqrt {x^{2} + 1}}\,{d x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.03 \begin {gather*} \int \sqrt {x+\sqrt {x^2+1}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.29, size = 42, normalized size = 1.14 \begin {gather*} \frac {4 x \sqrt {x + \sqrt {x^{2} + 1}}}{3} - \frac {2 \sqrt {x + \sqrt {x^{2} + 1}} \sqrt {x^{2} + 1}}{3} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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