Optimal. Leaf size=170 \[ -\frac{4\ 3^{3/4} \sqrt{2+\sqrt{3}} (x+1)^{3/2} \sqrt{x^2-x+1} \sqrt{\frac{x^2-x+1}{\left (x+\sqrt{3}+1\right )^2}} \text{EllipticF}\left (\sin ^{-1}\left (\frac{x-\sqrt{3}+1}{x+\sqrt{3}+1}\right ),-7-4 \sqrt{3}\right )}{55 \sqrt{\frac{x+1}{\left (x+\sqrt{3}+1\right )^2}} \left (x^3+1\right )}+\frac{2}{11} \sqrt{x+1} \sqrt{x^2-x+1} x^4+\frac{6}{55} \sqrt{x+1} \sqrt{x^2-x+1} x \]
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Rubi [A] time = 0.0656172, antiderivative size = 170, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 23, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.174, Rules used = {915, 279, 321, 218} \[ \frac{2}{11} \sqrt{x+1} \sqrt{x^2-x+1} x^4+\frac{6}{55} \sqrt{x+1} \sqrt{x^2-x+1} x-\frac{4\ 3^{3/4} \sqrt{2+\sqrt{3}} (x+1)^{3/2} \sqrt{x^2-x+1} \sqrt{\frac{x^2-x+1}{\left (x+\sqrt{3}+1\right )^2}} F\left (\sin ^{-1}\left (\frac{x-\sqrt{3}+1}{x+\sqrt{3}+1}\right )|-7-4 \sqrt{3}\right )}{55 \sqrt{\frac{x+1}{\left (x+\sqrt{3}+1\right )^2}} \left (x^3+1\right )} \]
Antiderivative was successfully verified.
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Rule 915
Rule 279
Rule 321
Rule 218
Rubi steps
\begin{align*} \int x^3 \sqrt{1+x} \sqrt{1-x+x^2} \, dx &=\frac{\left (\sqrt{1+x} \sqrt{1-x+x^2}\right ) \int x^3 \sqrt{1+x^3} \, dx}{\sqrt{1+x^3}}\\ &=\frac{2}{11} x^4 \sqrt{1+x} \sqrt{1-x+x^2}+\frac{\left (3 \sqrt{1+x} \sqrt{1-x+x^2}\right ) \int \frac{x^3}{\sqrt{1+x^3}} \, dx}{11 \sqrt{1+x^3}}\\ &=\frac{6}{55} x \sqrt{1+x} \sqrt{1-x+x^2}+\frac{2}{11} x^4 \sqrt{1+x} \sqrt{1-x+x^2}-\frac{\left (6 \sqrt{1+x} \sqrt{1-x+x^2}\right ) \int \frac{1}{\sqrt{1+x^3}} \, dx}{55 \sqrt{1+x^3}}\\ &=\frac{6}{55} x \sqrt{1+x} \sqrt{1-x+x^2}+\frac{2}{11} x^4 \sqrt{1+x} \sqrt{1-x+x^2}-\frac{4\ 3^{3/4} \sqrt{2+\sqrt{3}} (1+x)^{3/2} \sqrt{1-x+x^2} \sqrt{\frac{1-x+x^2}{\left (1+\sqrt{3}+x\right )^2}} F\left (\sin ^{-1}\left (\frac{1-\sqrt{3}+x}{1+\sqrt{3}+x}\right )|-7-4 \sqrt{3}\right )}{55 \sqrt{\frac{1+x}{\left (1+\sqrt{3}+x\right )^2}} \left (1+x^3\right )}\\ \end{align*}
Mathematica [C] time = 0.926628, size = 221, normalized size = 1.3 \[ \frac{2 \left (x \sqrt{x+1} \left (5 x^5-5 x^4+5 x^3+3 x^2-3 x+3\right )+\sqrt{-\frac{6 i}{\sqrt{3}+3 i}} \left (\sqrt{3}+3 i\right ) (x+1) \sqrt{\frac{\left (\sqrt{3}-3 i\right ) x+\sqrt{3}+3 i}{\left (\sqrt{3}-3 i\right ) (x+1)}} \sqrt{\frac{\left (\sqrt{3}+3 i\right ) x+\sqrt{3}-3 i}{\left (\sqrt{3}+3 i\right ) (x+1)}} \text{EllipticF}\left (i \sinh ^{-1}\left (\frac{\sqrt{-\frac{6 i}{\sqrt{3}+3 i}}}{\sqrt{x+1}}\right ),\frac{\sqrt{3}+3 i}{-\sqrt{3}+3 i}\right )\right )}{55 \sqrt{x^2-x+1}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.589, size = 257, normalized size = 1.5 \begin{align*}{\frac{2}{55\,{x}^{3}+55}\sqrt{1+x}\sqrt{{x}^{2}-x+1} \left ( 5\,{x}^{7}+3\,i\sqrt{-2\,{\frac{1+x}{i\sqrt{3}-3}}}\sqrt{{\frac{i\sqrt{3}-2\,x+1}{i\sqrt{3}+3}}}\sqrt{{\frac{2\,x-1+i\sqrt{3}}{i\sqrt{3}-3}}}{\it EllipticF} \left ( \sqrt{-2\,{\frac{1+x}{i\sqrt{3}-3}}},\sqrt{-{\frac{i\sqrt{3}-3}{i\sqrt{3}+3}}} \right ) \sqrt{3}-9\,\sqrt{-2\,{\frac{1+x}{i\sqrt{3}-3}}}\sqrt{{\frac{i\sqrt{3}-2\,x+1}{i\sqrt{3}+3}}}\sqrt{{\frac{2\,x-1+i\sqrt{3}}{i\sqrt{3}-3}}}{\it EllipticF} \left ( \sqrt{-2\,{\frac{1+x}{i\sqrt{3}-3}}},\sqrt{-{\frac{i\sqrt{3}-3}{i\sqrt{3}+3}}} \right ) +8\,{x}^{4}+3\,x \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \sqrt{x^{2} - x + 1} \sqrt{x + 1} x^{3}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\sqrt{x^{2} - x + 1} \sqrt{x + 1} x^{3}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{3} \sqrt{x + 1} \sqrt{x^{2} - x + 1}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \sqrt{x^{2} - x + 1} \sqrt{x + 1} x^{3}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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