3.875 \(\int \frac{1}{x^4 \sqrt [4]{2-3 x^2}} \, dx\)

Optimal. Leaf size=67 \[ -\frac{3 \left (2-3 x^2\right )^{3/4}}{8 x}-\frac{\left (2-3 x^2\right )^{3/4}}{6 x^3}-\frac{3 \sqrt{3} E\left (\left .\frac{1}{2} \sin ^{-1}\left (\sqrt{\frac{3}{2}} x\right )\right |2\right )}{4\ 2^{3/4}} \]

[Out]

-(2 - 3*x^2)^(3/4)/(6*x^3) - (3*(2 - 3*x^2)^(3/4))/(8*x) - (3*Sqrt[3]*EllipticE[ArcSin[Sqrt[3/2]*x]/2, 2])/(4*
2^(3/4))

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Rubi [A]  time = 0.0144736, antiderivative size = 67, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 2, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.133, Rules used = {325, 228} \[ -\frac{3 \left (2-3 x^2\right )^{3/4}}{8 x}-\frac{\left (2-3 x^2\right )^{3/4}}{6 x^3}-\frac{3 \sqrt{3} E\left (\left .\frac{1}{2} \sin ^{-1}\left (\sqrt{\frac{3}{2}} x\right )\right |2\right )}{4\ 2^{3/4}} \]

Antiderivative was successfully verified.

[In]

Int[1/(x^4*(2 - 3*x^2)^(1/4)),x]

[Out]

-(2 - 3*x^2)^(3/4)/(6*x^3) - (3*(2 - 3*x^2)^(3/4))/(8*x) - (3*Sqrt[3]*EllipticE[ArcSin[Sqrt[3/2]*x]/2, 2])/(4*
2^(3/4))

Rule 325

Int[((c_.)*(x_))^(m_)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Simp[((c*x)^(m + 1)*(a + b*x^n)^(p + 1))/(a*
c*(m + 1)), x] - Dist[(b*(m + n*(p + 1) + 1))/(a*c^n*(m + 1)), Int[(c*x)^(m + n)*(a + b*x^n)^p, x], x] /; Free
Q[{a, b, c, p}, x] && IGtQ[n, 0] && LtQ[m, -1] && IntBinomialQ[a, b, c, n, m, p, x]

Rule 228

Int[((a_) + (b_.)*(x_)^2)^(-1/4), x_Symbol] :> Simp[(2*EllipticE[(1*ArcSin[Rt[-(b/a), 2]*x])/2, 2])/(a^(1/4)*R
t[-(b/a), 2]), x] /; FreeQ[{a, b}, x] && GtQ[a, 0] && NegQ[b/a]

Rubi steps

\begin{align*} \int \frac{1}{x^4 \sqrt [4]{2-3 x^2}} \, dx &=-\frac{\left (2-3 x^2\right )^{3/4}}{6 x^3}+\frac{3}{4} \int \frac{1}{x^2 \sqrt [4]{2-3 x^2}} \, dx\\ &=-\frac{\left (2-3 x^2\right )^{3/4}}{6 x^3}-\frac{3 \left (2-3 x^2\right )^{3/4}}{8 x}-\frac{9}{16} \int \frac{1}{\sqrt [4]{2-3 x^2}} \, dx\\ &=-\frac{\left (2-3 x^2\right )^{3/4}}{6 x^3}-\frac{3 \left (2-3 x^2\right )^{3/4}}{8 x}-\frac{3 \sqrt{3} E\left (\left .\frac{1}{2} \sin ^{-1}\left (\sqrt{\frac{3}{2}} x\right )\right |2\right )}{4\ 2^{3/4}}\\ \end{align*}

Mathematica [C]  time = 0.0047798, size = 29, normalized size = 0.43 \[ -\frac{\, _2F_1\left (-\frac{3}{2},\frac{1}{4};-\frac{1}{2};\frac{3 x^2}{2}\right )}{3 \sqrt [4]{2} x^3} \]

Antiderivative was successfully verified.

[In]

Integrate[1/(x^4*(2 - 3*x^2)^(1/4)),x]

[Out]

-Hypergeometric2F1[-3/2, 1/4, -1/2, (3*x^2)/2]/(3*2^(1/4)*x^3)

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Maple [C]  time = 0.027, size = 45, normalized size = 0.7 \begin{align*}{\frac{27\,{x}^{4}-6\,{x}^{2}-8}{24\,{x}^{3}}{\frac{1}{\sqrt [4]{-3\,{x}^{2}+2}}}}-{\frac{9\,{2}^{3/4}x}{32}{\mbox{$_2$F$_1$}({\frac{1}{4}},{\frac{1}{2}};\,{\frac{3}{2}};\,{\frac{3\,{x}^{2}}{2}})}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/x^4/(-3*x^2+2)^(1/4),x)

[Out]

1/24*(27*x^4-6*x^2-8)/x^3/(-3*x^2+2)^(1/4)-9/32*2^(3/4)*x*hypergeom([1/4,1/2],[3/2],3/2*x^2)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{{\left (-3 \, x^{2} + 2\right )}^{\frac{1}{4}} x^{4}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^4/(-3*x^2+2)^(1/4),x, algorithm="maxima")

[Out]

integrate(1/((-3*x^2 + 2)^(1/4)*x^4), x)

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Fricas [F]  time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (-\frac{{\left (-3 \, x^{2} + 2\right )}^{\frac{3}{4}}}{3 \, x^{6} - 2 \, x^{4}}, x\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^4/(-3*x^2+2)^(1/4),x, algorithm="fricas")

[Out]

integral(-(-3*x^2 + 2)^(3/4)/(3*x^6 - 2*x^4), x)

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Sympy [C]  time = 0.813079, size = 34, normalized size = 0.51 \begin{align*} - \frac{2^{\frac{3}{4}}{{}_{2}F_{1}\left (\begin{matrix} - \frac{3}{2}, \frac{1}{4} \\ - \frac{1}{2} \end{matrix}\middle |{\frac{3 x^{2} e^{2 i \pi }}{2}} \right )}}{6 x^{3}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x**4/(-3*x**2+2)**(1/4),x)

[Out]

-2**(3/4)*hyper((-3/2, 1/4), (-1/2,), 3*x**2*exp_polar(2*I*pi)/2)/(6*x**3)

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{{\left (-3 \, x^{2} + 2\right )}^{\frac{1}{4}} x^{4}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^4/(-3*x^2+2)^(1/4),x, algorithm="giac")

[Out]

integrate(1/((-3*x^2 + 2)^(1/4)*x^4), x)