3.918 \(\int \frac {1}{x^6 (-2-3 x^2)^{3/4}} \, dx\)

Optimal. Leaf size=141 \[ \frac {27 \sqrt {3} \sqrt {-\frac {x^2}{\left (\sqrt {-3 x^2-2}+\sqrt {2}\right )^2}} \left (\sqrt {-3 x^2-2}+\sqrt {2}\right ) \operatorname {EllipticF}\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{-3 x^2-2}}{\sqrt [4]{2}}\right ),\frac {1}{2}\right )}{64 \sqrt [4]{2} x}+\frac {27 \sqrt [4]{-3 x^2-2}}{32 x}+\frac {\sqrt [4]{-3 x^2-2}}{10 x^5}-\frac {9 \sqrt [4]{-3 x^2-2}}{40 x^3} \]

[Out]

1/10*(-3*x^2-2)^(1/4)/x^5-9/40*(-3*x^2-2)^(1/4)/x^3+27/32*(-3*x^2-2)^(1/4)/x+27/128*2^(3/4)*(cos(2*arctan(1/2*
(-3*x^2-2)^(1/4)*2^(3/4)))^2)^(1/2)/cos(2*arctan(1/2*(-3*x^2-2)^(1/4)*2^(3/4)))*EllipticF(sin(2*arctan(1/2*(-3
*x^2-2)^(1/4)*2^(3/4))),1/2*2^(1/2))*(2^(1/2)+(-3*x^2-2)^(1/2))*(-x^2/(2^(1/2)+(-3*x^2-2)^(1/2))^2)^(1/2)/x*3^
(1/2)

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Rubi [A]  time = 0.06, antiderivative size = 141, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 3, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {325, 234, 220} \[ \frac {27 \sqrt [4]{-3 x^2-2}}{32 x}-\frac {9 \sqrt [4]{-3 x^2-2}}{40 x^3}+\frac {\sqrt [4]{-3 x^2-2}}{10 x^5}+\frac {27 \sqrt {3} \sqrt {-\frac {x^2}{\left (\sqrt {-3 x^2-2}+\sqrt {2}\right )^2}} \left (\sqrt {-3 x^2-2}+\sqrt {2}\right ) F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{-3 x^2-2}}{\sqrt [4]{2}}\right )|\frac {1}{2}\right )}{64 \sqrt [4]{2} x} \]

Antiderivative was successfully verified.

[In]

Int[1/(x^6*(-2 - 3*x^2)^(3/4)),x]

[Out]

(-2 - 3*x^2)^(1/4)/(10*x^5) - (9*(-2 - 3*x^2)^(1/4))/(40*x^3) + (27*(-2 - 3*x^2)^(1/4))/(32*x) + (27*Sqrt[3]*S
qrt[-(x^2/(Sqrt[2] + Sqrt[-2 - 3*x^2])^2)]*(Sqrt[2] + Sqrt[-2 - 3*x^2])*EllipticF[2*ArcTan[(-2 - 3*x^2)^(1/4)/
2^(1/4)], 1/2])/(64*2^(1/4)*x)

Rule 220

Int[1/Sqrt[(a_) + (b_.)*(x_)^4], x_Symbol] :> With[{q = Rt[b/a, 4]}, Simp[((1 + q^2*x^2)*Sqrt[(a + b*x^4)/(a*(
1 + q^2*x^2)^2)]*EllipticF[2*ArcTan[q*x], 1/2])/(2*q*Sqrt[a + b*x^4]), x]] /; FreeQ[{a, b}, x] && PosQ[b/a]

Rule 234

Int[((a_) + (b_.)*(x_)^2)^(-3/4), x_Symbol] :> Dist[(2*Sqrt[-((b*x^2)/a)])/(b*x), Subst[Int[1/Sqrt[1 - x^4/a],
x], x, (a + b*x^2)^(1/4)], x] /; FreeQ[{a, b}, x] && NegQ[a]

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]

Rubi steps

\begin {align*} \int \frac {1}{x^6 \left (-2-3 x^2\right )^{3/4}} \, dx &=\frac {\sqrt [4]{-2-3 x^2}}{10 x^5}-\frac {27}{20} \int \frac {1}{x^4 \left (-2-3 x^2\right )^{3/4}} \, dx\\ &=\frac {\sqrt [4]{-2-3 x^2}}{10 x^5}-\frac {9 \sqrt [4]{-2-3 x^2}}{40 x^3}+\frac {27}{16} \int \frac {1}{x^2 \left (-2-3 x^2\right )^{3/4}} \, dx\\ &=\frac {\sqrt [4]{-2-3 x^2}}{10 x^5}-\frac {9 \sqrt [4]{-2-3 x^2}}{40 x^3}+\frac {27 \sqrt [4]{-2-3 x^2}}{32 x}-\frac {81}{64} \int \frac {1}{\left (-2-3 x^2\right )^{3/4}} \, dx\\ &=\frac {\sqrt [4]{-2-3 x^2}}{10 x^5}-\frac {9 \sqrt [4]{-2-3 x^2}}{40 x^3}+\frac {27 \sqrt [4]{-2-3 x^2}}{32 x}+\frac {\left (27 \sqrt {\frac {3}{2}} \sqrt {-x^2}\right ) \operatorname {Subst}\left (\int \frac {1}{\sqrt {1+\frac {x^4}{2}}} \, dx,x,\sqrt [4]{-2-3 x^2}\right )}{32 x}\\ &=\frac {\sqrt [4]{-2-3 x^2}}{10 x^5}-\frac {9 \sqrt [4]{-2-3 x^2}}{40 x^3}+\frac {27 \sqrt [4]{-2-3 x^2}}{32 x}+\frac {27 \sqrt {3} \sqrt {-\frac {x^2}{\left (\sqrt {2}+\sqrt {-2-3 x^2}\right )^2}} \left (\sqrt {2}+\sqrt {-2-3 x^2}\right ) F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{-2-3 x^2}}{\sqrt [4]{2}}\right )|\frac {1}{2}\right )}{64 \sqrt [4]{2} x}\\ \end {align*}

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Mathematica [C]  time = 0.01, size = 48, normalized size = 0.34 \[ -\frac {\left (\frac {3 x^2}{2}+1\right )^{3/4} \, _2F_1\left (-\frac {5}{2},\frac {3}{4};-\frac {3}{2};-\frac {3 x^2}{2}\right )}{5 x^5 \left (-3 x^2-2\right )^{3/4}} \]

Antiderivative was successfully verified.

[In]

Integrate[1/(x^6*(-2 - 3*x^2)^(3/4)),x]

[Out]

-1/5*((1 + (3*x^2)/2)^(3/4)*Hypergeometric2F1[-5/2, 3/4, -3/2, (-3*x^2)/2])/(x^5*(-2 - 3*x^2)^(3/4))

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fricas [F]  time = 0.87, size = 0, normalized size = 0.00 \[ \frac {160 \, x^{5} {\rm integral}\left (\frac {81 \, {\left (-3 \, x^{2} - 2\right )}^{\frac {1}{4}}}{64 \, {\left (3 \, x^{2} + 2\right )}}, x\right ) + {\left (135 \, x^{4} - 36 \, x^{2} + 16\right )} {\left (-3 \, x^{2} - 2\right )}^{\frac {1}{4}}}{160 \, x^{5}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^6/(-3*x^2-2)^(3/4),x, algorithm="fricas")

[Out]

1/160*(160*x^5*integral(81/64*(-3*x^2 - 2)^(1/4)/(3*x^2 + 2), x) + (135*x^4 - 36*x^2 + 16)*(-3*x^2 - 2)^(1/4))
/x^5

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giac [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {1}{{\left (-3 \, x^{2} - 2\right )}^{\frac {3}{4}} x^{6}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^6/(-3*x^2-2)^(3/4),x, algorithm="giac")

[Out]

integrate(1/((-3*x^2 - 2)^(3/4)*x^6), x)

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maple [F]  time = 0.04, size = 0, normalized size = 0.00 \[ \int \frac {1}{\left (-3 x^{2}-2\right )^{\frac {3}{4}} x^{6}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/x^6/(-3*x^2-2)^(3/4),x)

[Out]

int(1/x^6/(-3*x^2-2)^(3/4),x)

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maxima [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {1}{{\left (-3 \, x^{2} - 2\right )}^{\frac {3}{4}} x^{6}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x^6/(-3*x^2-2)^(3/4),x, algorithm="maxima")

[Out]

integrate(1/((-3*x^2 - 2)^(3/4)*x^6), x)

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mupad [F]  time = 0.00, size = -1, normalized size = -0.01 \[ \int \frac {1}{x^6\,{\left (-3\,x^2-2\right )}^{3/4}} \,d x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/(x^6*(- 3*x^2 - 2)^(3/4)),x)

[Out]

int(1/(x^6*(- 3*x^2 - 2)^(3/4)), x)

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sympy [C]  time = 1.12, size = 37, normalized size = 0.26 \[ \frac {\sqrt [4]{2} e^{\frac {i \pi }{4}} {{}_{2}F_{1}\left (\begin {matrix} - \frac {5}{2}, \frac {3}{4} \\ - \frac {3}{2} \end {matrix}\middle | {\frac {3 x^{2} e^{i \pi }}{2}} \right )}}{10 x^{5}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/x**6/(-3*x**2-2)**(3/4),x)

[Out]

2**(1/4)*exp(I*pi/4)*hyper((-5/2, 3/4), (-3/2,), 3*x**2*exp_polar(I*pi)/2)/(10*x**5)

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