Optimal. Leaf size=14 \[ \frac {1}{3 (x+1)^3}+\log (x+1) \]
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Rubi [A] time = 0.05, antiderivative size = 14, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, integrand size = 33, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {1594, 1680, 14} \[ \frac {1}{3 (x+1)^3}+\log (x+1) \]
Antiderivative was successfully verified.
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Rule 14
Rule 1594
Rule 1680
Rubi steps
\begin {align*} \int \frac {3 x+3 x^2+x^3}{1+4 x+6 x^2+4 x^3+x^4} \, dx &=\int \frac {x \left (3+3 x+x^2\right )}{1+4 x+6 x^2+4 x^3+x^4} \, dx\\ &=\operatorname {Subst}\left (\int \frac {-1+x^3}{x^4} \, dx,x,1+x\right )\\ &=\operatorname {Subst}\left (\int \left (-\frac {1}{x^4}+\frac {1}{x}\right ) \, dx,x,1+x\right )\\ &=\frac {1}{3 (1+x)^3}+\log (1+x)\\ \end {align*}
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Mathematica [A] time = 0.01, size = 14, normalized size = 1.00 \[ \frac {1}{3 (x+1)^3}+\log (x+1) \]
Antiderivative was successfully verified.
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fricas [B] time = 0.89, size = 38, normalized size = 2.71 \[ \frac {3 \, {\left (x^{3} + 3 \, x^{2} + 3 \, x + 1\right )} \log \left (x + 1\right ) + 1}{3 \, {\left (x^{3} + 3 \, x^{2} + 3 \, x + 1\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.29, size = 13, normalized size = 0.93 \[ \frac {1}{3 \, {\left (x + 1\right )}^{3}} + \log \left ({\left | x + 1 \right |}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 13, normalized size = 0.93 \[ \ln \left (x +1\right )+\frac {1}{3 \left (x +1\right )^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.44, size = 22, normalized size = 1.57 \[ \frac {1}{3 \, {\left (x^{3} + 3 \, x^{2} + 3 \, x + 1\right )}} + \log \left (x + 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.04, size = 12, normalized size = 0.86 \[ \ln \left (x+1\right )+\frac {1}{3\,{\left (x+1\right )}^3} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.10, size = 20, normalized size = 1.43 \[ \log {\left (x + 1 \right )} + \frac {1}{3 x^{3} + 9 x^{2} + 9 x + 3} \]
Verification of antiderivative is not currently implemented for this CAS.
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