3.1202 \(\int \frac{\sqrt [4]{a-b x^4}}{x^{12}} \, dx\)

Optimal. Leaf size=133 \[ \frac{4 b^{7/2} x^3 \left (1-\frac{a}{b x^4}\right )^{3/4} \text{EllipticF}\left (\frac{1}{2} \csc ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right ),2\right )}{77 a^{5/2} \left (a-b x^4\right )^{3/4}}+\frac{2 b^2 \sqrt [4]{a-b x^4}}{77 a^2 x^3}+\frac{b \sqrt [4]{a-b x^4}}{77 a x^7}-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}} \]

[Out]

-(a - b*x^4)^(1/4)/(11*x^11) + (b*(a - b*x^4)^(1/4))/(77*a*x^7) + (2*b^2*(a - b*x^4)^(1/4))/(77*a^2*x^3) + (4*
b^(7/2)*(1 - a/(b*x^4))^(3/4)*x^3*EllipticF[ArcCsc[(Sqrt[b]*x^2)/Sqrt[a]]/2, 2])/(77*a^(5/2)*(a - b*x^4)^(3/4)
)

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Rubi [A]  time = 0.0614957, antiderivative size = 133, normalized size of antiderivative = 1., number of steps used = 7, number of rules used = 6, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.375, Rules used = {277, 325, 237, 335, 275, 232} \[ \frac{2 b^2 \sqrt [4]{a-b x^4}}{77 a^2 x^3}+\frac{4 b^{7/2} x^3 \left (1-\frac{a}{b x^4}\right )^{3/4} F\left (\left .\frac{1}{2} \csc ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{77 a^{5/2} \left (a-b x^4\right )^{3/4}}+\frac{b \sqrt [4]{a-b x^4}}{77 a x^7}-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}} \]

Antiderivative was successfully verified.

[In]

Int[(a - b*x^4)^(1/4)/x^12,x]

[Out]

-(a - b*x^4)^(1/4)/(11*x^11) + (b*(a - b*x^4)^(1/4))/(77*a*x^7) + (2*b^2*(a - b*x^4)^(1/4))/(77*a^2*x^3) + (4*
b^(7/2)*(1 - a/(b*x^4))^(3/4)*x^3*EllipticF[ArcCsc[(Sqrt[b]*x^2)/Sqrt[a]]/2, 2])/(77*a^(5/2)*(a - b*x^4)^(3/4)
)

Rule 277

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

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 237

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

Rule 335

Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> -Subst[Int[(a + b/x^n)^p/x^(m + 2), x], x, 1/x] /;
FreeQ[{a, b, p}, x] && ILtQ[n, 0] && IntegerQ[m]

Rule 275

Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> With[{k = GCD[m + 1, n]}, Dist[1/k, Subst[Int[x^((m
+ 1)/k - 1)*(a + b*x^(n/k))^p, x], x, x^k], x] /; k != 1] /; FreeQ[{a, b, p}, x] && IGtQ[n, 0] && IntegerQ[m]

Rule 232

Int[((a_) + (b_.)*(x_)^2)^(-3/4), x_Symbol] :> Simp[(2*EllipticF[(1*ArcSin[Rt[-(b/a), 2]*x])/2, 2])/(a^(3/4)*R
t[-(b/a), 2]), x] /; FreeQ[{a, b}, x] && GtQ[a, 0] && NegQ[b/a]

Rubi steps

\begin{align*} \int \frac{\sqrt [4]{a-b x^4}}{x^{12}} \, dx &=-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}}-\frac{1}{11} b \int \frac{1}{x^8 \left (a-b x^4\right )^{3/4}} \, dx\\ &=-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}}+\frac{b \sqrt [4]{a-b x^4}}{77 a x^7}-\frac{\left (6 b^2\right ) \int \frac{1}{x^4 \left (a-b x^4\right )^{3/4}} \, dx}{77 a}\\ &=-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}}+\frac{b \sqrt [4]{a-b x^4}}{77 a x^7}+\frac{2 b^2 \sqrt [4]{a-b x^4}}{77 a^2 x^3}-\frac{\left (4 b^3\right ) \int \frac{1}{\left (a-b x^4\right )^{3/4}} \, dx}{77 a^2}\\ &=-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}}+\frac{b \sqrt [4]{a-b x^4}}{77 a x^7}+\frac{2 b^2 \sqrt [4]{a-b x^4}}{77 a^2 x^3}-\frac{\left (4 b^3 \left (1-\frac{a}{b x^4}\right )^{3/4} x^3\right ) \int \frac{1}{\left (1-\frac{a}{b x^4}\right )^{3/4} x^3} \, dx}{77 a^2 \left (a-b x^4\right )^{3/4}}\\ &=-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}}+\frac{b \sqrt [4]{a-b x^4}}{77 a x^7}+\frac{2 b^2 \sqrt [4]{a-b x^4}}{77 a^2 x^3}+\frac{\left (4 b^3 \left (1-\frac{a}{b x^4}\right )^{3/4} x^3\right ) \operatorname{Subst}\left (\int \frac{x}{\left (1-\frac{a x^4}{b}\right )^{3/4}} \, dx,x,\frac{1}{x}\right )}{77 a^2 \left (a-b x^4\right )^{3/4}}\\ &=-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}}+\frac{b \sqrt [4]{a-b x^4}}{77 a x^7}+\frac{2 b^2 \sqrt [4]{a-b x^4}}{77 a^2 x^3}+\frac{\left (2 b^3 \left (1-\frac{a}{b x^4}\right )^{3/4} x^3\right ) \operatorname{Subst}\left (\int \frac{1}{\left (1-\frac{a x^2}{b}\right )^{3/4}} \, dx,x,\frac{1}{x^2}\right )}{77 a^2 \left (a-b x^4\right )^{3/4}}\\ &=-\frac{\sqrt [4]{a-b x^4}}{11 x^{11}}+\frac{b \sqrt [4]{a-b x^4}}{77 a x^7}+\frac{2 b^2 \sqrt [4]{a-b x^4}}{77 a^2 x^3}+\frac{4 b^{7/2} \left (1-\frac{a}{b x^4}\right )^{3/4} x^3 F\left (\left .\frac{1}{2} \csc ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{77 a^{5/2} \left (a-b x^4\right )^{3/4}}\\ \end{align*}

Mathematica [C]  time = 0.0096475, size = 52, normalized size = 0.39 \[ -\frac{\sqrt [4]{a-b x^4} \, _2F_1\left (-\frac{11}{4},-\frac{1}{4};-\frac{7}{4};\frac{b x^4}{a}\right )}{11 x^{11} \sqrt [4]{1-\frac{b x^4}{a}}} \]

Antiderivative was successfully verified.

[In]

Integrate[(a - b*x^4)^(1/4)/x^12,x]

[Out]

-((a - b*x^4)^(1/4)*Hypergeometric2F1[-11/4, -1/4, -7/4, (b*x^4)/a])/(11*x^11*(1 - (b*x^4)/a)^(1/4))

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Maple [F]  time = 0.024, size = 0, normalized size = 0. \begin{align*} \int{\frac{1}{{x}^{12}}\sqrt [4]{-b{x}^{4}+a}}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((-b*x^4+a)^(1/4)/x^12,x)

[Out]

int((-b*x^4+a)^(1/4)/x^12,x)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (-b x^{4} + a\right )}^{\frac{1}{4}}}{x^{12}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((-b*x^4+a)^(1/4)/x^12,x, algorithm="maxima")

[Out]

integrate((-b*x^4 + a)^(1/4)/x^12, x)

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Fricas [F]  time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{{\left (-b x^{4} + a\right )}^{\frac{1}{4}}}{x^{12}}, x\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((-b*x^4+a)^(1/4)/x^12,x, algorithm="fricas")

[Out]

integral((-b*x^4 + a)^(1/4)/x^12, x)

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Sympy [C]  time = 3.54775, size = 34, normalized size = 0.26 \begin{align*} - \frac{i \sqrt [4]{b} e^{- \frac{i \pi }{4}}{{}_{2}F_{1}\left (\begin{matrix} - \frac{1}{4}, \frac{5}{2} \\ \frac{7}{2} \end{matrix}\middle |{\frac{a}{b x^{4}}} \right )}}{10 x^{10}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((-b*x**4+a)**(1/4)/x**12,x)

[Out]

-I*b**(1/4)*exp(-I*pi/4)*hyper((-1/4, 5/2), (7/2,), a/(b*x**4))/(10*x**10)

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (-b x^{4} + a\right )}^{\frac{1}{4}}}{x^{12}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((-b*x^4+a)^(1/4)/x^12,x, algorithm="giac")

[Out]

integrate((-b*x^4 + a)^(1/4)/x^12, x)