3.662 \(\int \frac{x^2}{\left (a^2+2 a b x^2+b^2 x^4\right )^{2/3}} \, dx\)

Optimal. Leaf size=618 \[ -\frac{9 a x \left (\frac{b x^2}{a}+1\right )^{4/3}}{2 b \left (a^2+2 a b x^2+b^2 x^4\right )^{2/3} \left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )}-\frac{3 x \left (a+b x^2\right )}{2 b \left (a^2+2 a b x^2+b^2 x^4\right )^{2/3}}-\frac{3\ 3^{3/4} a^2 \left (\frac{b x^2}{a}+1\right )^{4/3} \left (1-\sqrt [3]{\frac{b x^2}{a}+1}\right ) \sqrt{\frac{\left (\frac{b x^2}{a}+1\right )^{2/3}+\sqrt [3]{\frac{b x^2}{a}+1}+1}{\left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )^2}} F\left (\sin ^{-1}\left (\frac{-\sqrt [3]{\frac{b x^2}{a}+1}+\sqrt{3}+1}{-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1}\right )|-7+4 \sqrt{3}\right )}{\sqrt{2} b^2 x \left (a^2+2 a b x^2+b^2 x^4\right )^{2/3} \sqrt{-\frac{1-\sqrt [3]{\frac{b x^2}{a}+1}}{\left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )^2}}}+\frac{9 \sqrt [4]{3} \sqrt{2+\sqrt{3}} a^2 \left (\frac{b x^2}{a}+1\right )^{4/3} \left (1-\sqrt [3]{\frac{b x^2}{a}+1}\right ) \sqrt{\frac{\left (\frac{b x^2}{a}+1\right )^{2/3}+\sqrt [3]{\frac{b x^2}{a}+1}+1}{\left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )^2}} E\left (\sin ^{-1}\left (\frac{-\sqrt [3]{\frac{b x^2}{a}+1}+\sqrt{3}+1}{-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1}\right )|-7+4 \sqrt{3}\right )}{4 b^2 x \left (a^2+2 a b x^2+b^2 x^4\right )^{2/3} \sqrt{-\frac{1-\sqrt [3]{\frac{b x^2}{a}+1}}{\left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )^2}}} \]

[Out]

(-3*x*(a + b*x^2))/(2*b*(a^2 + 2*a*b*x^2 + b^2*x^4)^(2/3)) - (9*a*x*(1 + (b*x^2)
/a)^(4/3))/(2*b*(a^2 + 2*a*b*x^2 + b^2*x^4)^(2/3)*(1 - Sqrt[3] - (1 + (b*x^2)/a)
^(1/3))) + (9*3^(1/4)*Sqrt[2 + Sqrt[3]]*a^2*(1 + (b*x^2)/a)^(4/3)*(1 - (1 + (b*x
^2)/a)^(1/3))*Sqrt[(1 + (1 + (b*x^2)/a)^(1/3) + (1 + (b*x^2)/a)^(2/3))/(1 - Sqrt
[3] - (1 + (b*x^2)/a)^(1/3))^2]*EllipticE[ArcSin[(1 + Sqrt[3] - (1 + (b*x^2)/a)^
(1/3))/(1 - Sqrt[3] - (1 + (b*x^2)/a)^(1/3))], -7 + 4*Sqrt[3]])/(4*b^2*x*(a^2 +
2*a*b*x^2 + b^2*x^4)^(2/3)*Sqrt[-((1 - (1 + (b*x^2)/a)^(1/3))/(1 - Sqrt[3] - (1
+ (b*x^2)/a)^(1/3))^2)]) - (3*3^(3/4)*a^2*(1 + (b*x^2)/a)^(4/3)*(1 - (1 + (b*x^2
)/a)^(1/3))*Sqrt[(1 + (1 + (b*x^2)/a)^(1/3) + (1 + (b*x^2)/a)^(2/3))/(1 - Sqrt[3
] - (1 + (b*x^2)/a)^(1/3))^2]*EllipticF[ArcSin[(1 + Sqrt[3] - (1 + (b*x^2)/a)^(1
/3))/(1 - Sqrt[3] - (1 + (b*x^2)/a)^(1/3))], -7 + 4*Sqrt[3]])/(Sqrt[2]*b^2*x*(a^
2 + 2*a*b*x^2 + b^2*x^4)^(2/3)*Sqrt[-((1 - (1 + (b*x^2)/a)^(1/3))/(1 - Sqrt[3] -
(1 + (b*x^2)/a)^(1/3))^2)])

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Rubi [A]  time = 0.967609, antiderivative size = 618, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 6, integrand size = 26, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.231 \[ -\frac{9 a x \left (\frac{b x^2}{a}+1\right )^{4/3}}{2 b \left (a^2+2 a b x^2+b^2 x^4\right )^{2/3} \left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )}-\frac{3 x \left (a+b x^2\right )}{2 b \left (a^2+2 a b x^2+b^2 x^4\right )^{2/3}}-\frac{3\ 3^{3/4} a^2 \left (\frac{b x^2}{a}+1\right )^{4/3} \left (1-\sqrt [3]{\frac{b x^2}{a}+1}\right ) \sqrt{\frac{\left (\frac{b x^2}{a}+1\right )^{2/3}+\sqrt [3]{\frac{b x^2}{a}+1}+1}{\left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )^2}} F\left (\sin ^{-1}\left (\frac{-\sqrt [3]{\frac{b x^2}{a}+1}+\sqrt{3}+1}{-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1}\right )|-7+4 \sqrt{3}\right )}{\sqrt{2} b^2 x \left (a^2+2 a b x^2+b^2 x^4\right )^{2/3} \sqrt{-\frac{1-\sqrt [3]{\frac{b x^2}{a}+1}}{\left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )^2}}}+\frac{9 \sqrt [4]{3} \sqrt{2+\sqrt{3}} a^2 \left (\frac{b x^2}{a}+1\right )^{4/3} \left (1-\sqrt [3]{\frac{b x^2}{a}+1}\right ) \sqrt{\frac{\left (\frac{b x^2}{a}+1\right )^{2/3}+\sqrt [3]{\frac{b x^2}{a}+1}+1}{\left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )^2}} E\left (\sin ^{-1}\left (\frac{-\sqrt [3]{\frac{b x^2}{a}+1}+\sqrt{3}+1}{-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1}\right )|-7+4 \sqrt{3}\right )}{4 b^2 x \left (a^2+2 a b x^2+b^2 x^4\right )^{2/3} \sqrt{-\frac{1-\sqrt [3]{\frac{b x^2}{a}+1}}{\left (-\sqrt [3]{\frac{b x^2}{a}+1}-\sqrt{3}+1\right )^2}}} \]

Antiderivative was successfully verified.

[In]  Int[x^2/(a^2 + 2*a*b*x^2 + b^2*x^4)^(2/3),x]

[Out]

(-3*x*(a + b*x^2))/(2*b*(a^2 + 2*a*b*x^2 + b^2*x^4)^(2/3)) - (9*a*x*(1 + (b*x^2)
/a)^(4/3))/(2*b*(a^2 + 2*a*b*x^2 + b^2*x^4)^(2/3)*(1 - Sqrt[3] - (1 + (b*x^2)/a)
^(1/3))) + (9*3^(1/4)*Sqrt[2 + Sqrt[3]]*a^2*(1 + (b*x^2)/a)^(4/3)*(1 - (1 + (b*x
^2)/a)^(1/3))*Sqrt[(1 + (1 + (b*x^2)/a)^(1/3) + (1 + (b*x^2)/a)^(2/3))/(1 - Sqrt
[3] - (1 + (b*x^2)/a)^(1/3))^2]*EllipticE[ArcSin[(1 + Sqrt[3] - (1 + (b*x^2)/a)^
(1/3))/(1 - Sqrt[3] - (1 + (b*x^2)/a)^(1/3))], -7 + 4*Sqrt[3]])/(4*b^2*x*(a^2 +
2*a*b*x^2 + b^2*x^4)^(2/3)*Sqrt[-((1 - (1 + (b*x^2)/a)^(1/3))/(1 - Sqrt[3] - (1
+ (b*x^2)/a)^(1/3))^2)]) - (3*3^(3/4)*a^2*(1 + (b*x^2)/a)^(4/3)*(1 - (1 + (b*x^2
)/a)^(1/3))*Sqrt[(1 + (1 + (b*x^2)/a)^(1/3) + (1 + (b*x^2)/a)^(2/3))/(1 - Sqrt[3
] - (1 + (b*x^2)/a)^(1/3))^2]*EllipticF[ArcSin[(1 + Sqrt[3] - (1 + (b*x^2)/a)^(1
/3))/(1 - Sqrt[3] - (1 + (b*x^2)/a)^(1/3))], -7 + 4*Sqrt[3]])/(Sqrt[2]*b^2*x*(a^
2 + 2*a*b*x^2 + b^2*x^4)^(2/3)*Sqrt[-((1 - (1 + (b*x^2)/a)^(1/3))/(1 - Sqrt[3] -
(1 + (b*x^2)/a)^(1/3))^2)])

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Rubi in Sympy [A]  time = 71.7491, size = 736, normalized size = 1.19 \[ \text{result too large to display} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  rubi_integrate(x**2/(b**2*x**4+2*a*b*x**2+a**2)**(2/3),x)

[Out]

9*3**(1/4)*a**(1/3)*sqrt((a**(2/3)*b**(2/3) + a**(1/3)*b**(1/3)*(a*b + b**2*x**2
)**(1/3) + (a*b + b**2*x**2)**(2/3))/(a**(1/3)*b**(1/3)*(-1 + sqrt(3)) + (a*b +
b**2*x**2)**(1/3))**2)*sqrt(sqrt(3) + 2)*(a**(1/3)*b**(1/3) - (a*b + b**2*x**2)*
*(1/3))*(a**2 + 2*a*b*x**2 + b**2*x**4)**(1/3)*elliptic_e(asin((a**(1/3)*b**(1/3
)*(1 + sqrt(3)) - (a*b + b**2*x**2)**(1/3))/(-a**(1/3)*b**(1/3)*(-1 + sqrt(3)) -
(a*b + b**2*x**2)**(1/3))), -7 + 4*sqrt(3))/(4*b**(5/3)*x*sqrt(-a**(1/3)*b**(1/
3)*(a**(1/3)*b**(1/3) - (a*b + b**2*x**2)**(1/3))/(a**(1/3)*b**(1/3)*(-1 + sqrt(
3)) + (a*b + b**2*x**2)**(1/3))**2)*(a*b + b**2*x**2)**(2/3)) - 3*sqrt(2)*3**(3/
4)*a**(1/3)*sqrt((a**(2/3)*b**(2/3) + a**(1/3)*b**(1/3)*(a*b + b**2*x**2)**(1/3)
+ (a*b + b**2*x**2)**(2/3))/(a**(1/3)*b**(1/3)*(-1 + sqrt(3)) + (a*b + b**2*x**
2)**(1/3))**2)*(a**(1/3)*b**(1/3) - (a*b + b**2*x**2)**(1/3))*(a**2 + 2*a*b*x**2
+ b**2*x**4)**(1/3)*elliptic_f(asin((a**(1/3)*b**(1/3)*(1 + sqrt(3)) - (a*b + b
**2*x**2)**(1/3))/(-a**(1/3)*b**(1/3)*(-1 + sqrt(3)) - (a*b + b**2*x**2)**(1/3))
), -7 + 4*sqrt(3))/(2*b**(5/3)*x*sqrt(-a**(1/3)*b**(1/3)*(a**(1/3)*b**(1/3) - (a
*b + b**2*x**2)**(1/3))/(a**(1/3)*b**(1/3)*(-1 + sqrt(3)) + (a*b + b**2*x**2)**(
1/3))**2)*(a*b + b**2*x**2)**(2/3)) + 9*x*(a**2 + 2*a*b*x**2 + b**2*x**4)**(1/3)
/(2*(a*b + b**2*x**2)**(2/3)*(a**(1/3)*b**(1/3)*(-1 + sqrt(3)) + (a*b + b**2*x**
2)**(1/3))) - 3*x*(a**2 + 2*a*b*x**2 + b**2*x**4)**(1/3)/(2*b*(a + b*x**2))

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Mathematica [C]  time = 0.0734777, size = 64, normalized size = 0.1 \[ \frac{3 x \left (a+b x^2\right ) \left (\sqrt [3]{\frac{b x^2}{a}+1} \, _2F_1\left (\frac{1}{3},\frac{1}{2};\frac{3}{2};-\frac{b x^2}{a}\right )-1\right )}{2 b \left (\left (a+b x^2\right )^2\right )^{2/3}} \]

Antiderivative was successfully verified.

[In]  Integrate[x^2/(a^2 + 2*a*b*x^2 + b^2*x^4)^(2/3),x]

[Out]

(3*x*(a + b*x^2)*(-1 + (1 + (b*x^2)/a)^(1/3)*Hypergeometric2F1[1/3, 1/2, 3/2, -(
(b*x^2)/a)]))/(2*b*((a + b*x^2)^2)^(2/3))

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Maple [F]  time = 0.031, size = 0, normalized size = 0. \[ \int{{x}^{2} \left ({b}^{2}{x}^{4}+2\,ab{x}^{2}+{a}^{2} \right ) ^{-{\frac{2}{3}}}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  int(x^2/(b^2*x^4+2*a*b*x^2+a^2)^(2/3),x)

[Out]

int(x^2/(b^2*x^4+2*a*b*x^2+a^2)^(2/3),x)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \[ \int \frac{x^{2}}{{\left (b^{2} x^{4} + 2 \, a b x^{2} + a^{2}\right )}^{\frac{2}{3}}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x^2/(b^2*x^4 + 2*a*b*x^2 + a^2)^(2/3),x, algorithm="maxima")

[Out]

integrate(x^2/(b^2*x^4 + 2*a*b*x^2 + a^2)^(2/3), x)

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Fricas [F]  time = 0., size = 0, normalized size = 0. \[{\rm integral}\left (\frac{x^{2}}{{\left (b^{2} x^{4} + 2 \, a b x^{2} + a^{2}\right )}^{\frac{2}{3}}}, x\right ) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x^2/(b^2*x^4 + 2*a*b*x^2 + a^2)^(2/3),x, algorithm="fricas")

[Out]

integral(x^2/(b^2*x^4 + 2*a*b*x^2 + a^2)^(2/3), x)

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Sympy [F]  time = 0., size = 0, normalized size = 0. \[ \int \frac{x^{2}}{\left (\left (a + b x^{2}\right )^{2}\right )^{\frac{2}{3}}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x**2/(b**2*x**4+2*a*b*x**2+a**2)**(2/3),x)

[Out]

Integral(x**2/((a + b*x**2)**2)**(2/3), x)

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GIAC/XCAS [F]  time = 0., size = 0, normalized size = 0. \[ \int \frac{x^{2}}{{\left (b^{2} x^{4} + 2 \, a b x^{2} + a^{2}\right )}^{\frac{2}{3}}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x^2/(b^2*x^4 + 2*a*b*x^2 + a^2)^(2/3),x, algorithm="giac")

[Out]

integrate(x^2/(b^2*x^4 + 2*a*b*x^2 + a^2)^(2/3), x)