Optimal. Leaf size=145 \[ \frac{3 \left (x^2+1\right ) \sqrt{\frac{x^4+x^2+1}{\left (x^2+1\right )^2}} \text{EllipticF}\left (2 \tan ^{-1}(x),\frac{1}{4}\right )}{5 \sqrt{x^4+x^2+1}}+\frac{1}{5} \left (x^2+2\right ) \sqrt{x^4+x^2+1} x+\frac{3 \sqrt{x^4+x^2+1} x}{5 \left (x^2+1\right )}-\frac{3 \left (x^2+1\right ) \sqrt{\frac{x^4+x^2+1}{\left (x^2+1\right )^2}} E\left (2 \tan ^{-1}(x)|\frac{1}{4}\right )}{5 \sqrt{x^4+x^2+1}} \]
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Rubi [A] time = 0.0425715, antiderivative size = 145, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.222, Rules used = {1176, 1197, 1103, 1195} \[ \frac{1}{5} \left (x^2+2\right ) \sqrt{x^4+x^2+1} x+\frac{3 \sqrt{x^4+x^2+1} x}{5 \left (x^2+1\right )}+\frac{3 \left (x^2+1\right ) \sqrt{\frac{x^4+x^2+1}{\left (x^2+1\right )^2}} F\left (2 \tan ^{-1}(x)|\frac{1}{4}\right )}{5 \sqrt{x^4+x^2+1}}-\frac{3 \left (x^2+1\right ) \sqrt{\frac{x^4+x^2+1}{\left (x^2+1\right )^2}} E\left (2 \tan ^{-1}(x)|\frac{1}{4}\right )}{5 \sqrt{x^4+x^2+1}} \]
Antiderivative was successfully verified.
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Rule 1176
Rule 1197
Rule 1103
Rule 1195
Rubi steps
\begin{align*} \int \left (1+x^2\right ) \sqrt{1+x^2+x^4} \, dx &=\frac{1}{5} x \left (2+x^2\right ) \sqrt{1+x^2+x^4}+\frac{1}{15} \int \frac{9+9 x^2}{\sqrt{1+x^2+x^4}} \, dx\\ &=\frac{1}{5} x \left (2+x^2\right ) \sqrt{1+x^2+x^4}-\frac{3}{5} \int \frac{1-x^2}{\sqrt{1+x^2+x^4}} \, dx+\frac{6}{5} \int \frac{1}{\sqrt{1+x^2+x^4}} \, dx\\ &=\frac{3 x \sqrt{1+x^2+x^4}}{5 \left (1+x^2\right )}+\frac{1}{5} x \left (2+x^2\right ) \sqrt{1+x^2+x^4}-\frac{3 \left (1+x^2\right ) \sqrt{\frac{1+x^2+x^4}{\left (1+x^2\right )^2}} E\left (2 \tan ^{-1}(x)|\frac{1}{4}\right )}{5 \sqrt{1+x^2+x^4}}+\frac{3 \left (1+x^2\right ) \sqrt{\frac{1+x^2+x^4}{\left (1+x^2\right )^2}} F\left (2 \tan ^{-1}(x)|\frac{1}{4}\right )}{5 \sqrt{1+x^2+x^4}}\\ \end{align*}
Mathematica [C] time = 0.183043, size = 168, normalized size = 1.16 \[ \frac{\frac{3}{2} \sqrt{2+\left (1-i \sqrt{3}\right ) x^2} \sqrt{2+\left (1+i \sqrt{3}\right ) x^2} \text{EllipticF}\left (\sin ^{-1}\left (\frac{1}{2} \left (x+i \sqrt{3} x\right )\right ),\frac{1}{2} i \left (\sqrt{3}+i\right )\right )+x^7+3 x^5+3 x^3+3 \sqrt [3]{-1} \sqrt{\sqrt [3]{-1} x^2+1} \sqrt{1-(-1)^{2/3} x^2} E\left (i \sinh ^{-1}\left ((-1)^{5/6} x\right )|(-1)^{2/3}\right )+2 x}{5 \sqrt{x^4+x^2+1}} \]
Antiderivative was successfully verified.
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Maple [C] time = 0.006, size = 233, normalized size = 1.6 \begin{align*}{\frac{{x}^{3}}{5}\sqrt{{x}^{4}+{x}^{2}+1}}+{\frac{2\,x}{5}\sqrt{{x}^{4}+{x}^{2}+1}}+{\frac{6}{5\,\sqrt{-2+2\,i\sqrt{3}}}\sqrt{1- \left ( -{\frac{1}{2}}+{\frac{i}{2}}\sqrt{3} \right ){x}^{2}}\sqrt{1- \left ( -{\frac{1}{2}}-{\frac{i}{2}}\sqrt{3} \right ){x}^{2}}{\it EllipticF} \left ({\frac{x\sqrt{-2+2\,i\sqrt{3}}}{2}},{\frac{\sqrt{-2+2\,i\sqrt{3}}}{2}} \right ){\frac{1}{\sqrt{{x}^{4}+{x}^{2}+1}}}}-{\frac{12}{5\,\sqrt{-2+2\,i\sqrt{3}} \left ( i\sqrt{3}+1 \right ) }\sqrt{1- \left ( -{\frac{1}{2}}+{\frac{i}{2}}\sqrt{3} \right ){x}^{2}}\sqrt{1- \left ( -{\frac{1}{2}}-{\frac{i}{2}}\sqrt{3} \right ){x}^{2}} \left ({\it EllipticF} \left ({\frac{x\sqrt{-2+2\,i\sqrt{3}}}{2}},{\frac{\sqrt{-2+2\,i\sqrt{3}}}{2}} \right ) -{\it EllipticE} \left ({\frac{x\sqrt{-2+2\,i\sqrt{3}}}{2}},{\frac{\sqrt{-2+2\,i\sqrt{3}}}{2}} \right ) \right ){\frac{1}{\sqrt{{x}^{4}+{x}^{2}+1}}}} \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^{4} + x^{2} + 1}{\left (x^{2} + 1\right )}\,{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^{4} + x^{2} + 1}{\left (x^{2} + 1\right )}, 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 \sqrt{\left (x^{2} - x + 1\right ) \left (x^{2} + x + 1\right )} \left (x^{2} + 1\right )\, 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^{4} + x^{2} + 1}{\left (x^{2} + 1\right )}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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