3.1197 \(\int \sqrt [4]{a-b x^4} \, dx\)

Optimal. Leaf size=83 \[ \frac{1}{2} x \sqrt [4]{a-b x^4}-\frac{\sqrt{a} \sqrt{b} x^3 \left (1-\frac{a}{b x^4}\right )^{3/4} F\left (\left .\frac{1}{2} \csc ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{2 \left (a-b x^4\right )^{3/4}} \]

[Out]

(x*(a - b*x^4)^(1/4))/2 - (Sqrt[a]*Sqrt[b]*(1 - a/(b*x^4))^(3/4)*x^3*EllipticF[A
rcCsc[(Sqrt[b]*x^2)/Sqrt[a]]/2, 2])/(2*(a - b*x^4)^(3/4))

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Rubi [A]  time = 0.0948801, antiderivative size = 83, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 5, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.417 \[ \frac{1}{2} x \sqrt [4]{a-b x^4}-\frac{\sqrt{a} \sqrt{b} x^3 \left (1-\frac{a}{b x^4}\right )^{3/4} F\left (\left .\frac{1}{2} \csc ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{2 \left (a-b x^4\right )^{3/4}} \]

Antiderivative was successfully verified.

[In]  Int[(a - b*x^4)^(1/4),x]

[Out]

(x*(a - b*x^4)^(1/4))/2 - (Sqrt[a]*Sqrt[b]*(1 - a/(b*x^4))^(3/4)*x^3*EllipticF[A
rcCsc[(Sqrt[b]*x^2)/Sqrt[a]]/2, 2])/(2*(a - b*x^4)^(3/4))

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Rubi in Sympy [A]  time = 12.5487, size = 68, normalized size = 0.82 \[ - \frac{\sqrt{a} \sqrt{b} x^{3} \left (- \frac{a}{b x^{4}} + 1\right )^{\frac{3}{4}} F\left (\frac{\operatorname{asin}{\left (\frac{\sqrt{a}}{\sqrt{b} x^{2}} \right )}}{2}\middle | 2\right )}{2 \left (a - b x^{4}\right )^{\frac{3}{4}}} + \frac{x \sqrt [4]{a - b x^{4}}}{2} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  rubi_integrate((-b*x**4+a)**(1/4),x)

[Out]

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

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Mathematica [C]  time = 0.0371919, size = 62, normalized size = 0.75 \[ \frac{a x \left (1-\frac{b x^4}{a}\right )^{3/4} \, _2F_1\left (\frac{1}{4},\frac{3}{4};\frac{5}{4};\frac{b x^4}{a}\right )+a x-b x^5}{2 \left (a-b x^4\right )^{3/4}} \]

Antiderivative was successfully verified.

[In]  Integrate[(a - b*x^4)^(1/4),x]

[Out]

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

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Maple [F]  time = 0.039, size = 0, normalized size = 0. \[ \int \sqrt [4]{-b{x}^{4}+a}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  int((-b*x^4+a)^(1/4),x)

[Out]

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

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

Verification of antiderivative is not currently implemented for this CAS.

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

[Out]

integrate((-b*x^4 + a)^(1/4), x)

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

Verification of antiderivative is not currently implemented for this CAS.

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

[Out]

integral((-b*x^4 + a)^(1/4), x)

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Sympy [A]  time = 2.42386, size = 39, normalized size = 0.47 \[ \frac{\sqrt [4]{a} x \Gamma \left (\frac{1}{4}\right ){{}_{2}F_{1}\left (\begin{matrix} - \frac{1}{4}, \frac{1}{4} \\ \frac{5}{4} \end{matrix}\middle |{\frac{b x^{4} e^{2 i \pi }}{a}} \right )}}{4 \Gamma \left (\frac{5}{4}\right )} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate((-b*x**4+a)**(1/4),x)

[Out]

a**(1/4)*x*gamma(1/4)*hyper((-1/4, 1/4), (5/4,), b*x**4*exp_polar(2*I*pi)/a)/(4*
gamma(5/4))

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GIAC/XCAS [F]  time = 0., size = 0, normalized size = 0. \[ \int{\left (-b x^{4} + a\right )}^{\frac{1}{4}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

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

[Out]

integrate((-b*x^4 + a)^(1/4), x)