Optimal. Leaf size=12 \[ \sinh ^{-1}\left (\frac {2 x+1}{\sqrt {3}}\right ) \]
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Rubi [A] time = 0.01, antiderivative size = 12, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {619, 215} \[ \sinh ^{-1}\left (\frac {2 x+1}{\sqrt {3}}\right ) \]
Antiderivative was successfully verified.
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Rule 215
Rule 619
Rubi steps
\begin {align*} \int \frac {1}{\sqrt {1+x+x^2}} \, dx &=\frac {\operatorname {Subst}\left (\int \frac {1}{\sqrt {1+\frac {x^2}{3}}} \, dx,x,1+2 x\right )}{\sqrt {3}}\\ &=\sinh ^{-1}\left (\frac {1+2 x}{\sqrt {3}}\right )\\ \end {align*}
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Mathematica [A] time = 0.01, size = 12, normalized size = 1.00 \[ \sinh ^{-1}\left (\frac {2 x+1}{\sqrt {3}}\right ) \]
Antiderivative was successfully verified.
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IntegrateAlgebraic [A] time = 0.06, size = 20, normalized size = 1.67 \[ -\log \left (2 \sqrt {x^2+x+1}-2 x-1\right ) \]
Antiderivative was successfully verified.
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fricas [A] time = 0.71, size = 18, normalized size = 1.50 \[ -\log \left (-2 \, x + 2 \, \sqrt {x^{2} + x + 1} - 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.65, size = 18, normalized size = 1.50 \[ -\log \left (-2 \, x + 2 \, \sqrt {x^{2} + x + 1} - 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.35, size = 10, normalized size = 0.83
method | result | size |
default | \(\arcsinh \left (\frac {2 \left (\frac {1}{2}+x \right ) \sqrt {3}}{3}\right )\) | \(10\) |
trager | \(-\ln \left (2 \sqrt {x^{2}+x +1}-1-2 x \right )\) | \(19\) |
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 1.40, size = 11, normalized size = 0.92 \[ \operatorname {arsinh}\left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.24, size = 12, normalized size = 1.00 \[ \ln \left (x+\sqrt {x^2+x+1}+\frac {1}{2}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {1}{\sqrt {x^{2} + x + 1}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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