3.746 \(\int \frac{x^3}{\left (a+b x^8\right )^2 \sqrt{c+d x^8}} \, dx\)

Optimal. Leaf size=104 \[ \frac{(b c-2 a d) \tan ^{-1}\left (\frac{x^4 \sqrt{b c-a d}}{\sqrt{a} \sqrt{c+d x^8}}\right )}{8 a^{3/2} (b c-a d)^{3/2}}+\frac{b x^4 \sqrt{c+d x^8}}{8 a \left (a+b x^8\right ) (b c-a d)} \]

[Out]

(b*x^4*Sqrt[c + d*x^8])/(8*a*(b*c - a*d)*(a + b*x^8)) + ((b*c - 2*a*d)*ArcTan[(S
qrt[b*c - a*d]*x^4)/(Sqrt[a]*Sqrt[c + d*x^8])])/(8*a^(3/2)*(b*c - a*d)^(3/2))

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Rubi [A]  time = 0.265667, antiderivative size = 104, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.167 \[ \frac{(b c-2 a d) \tan ^{-1}\left (\frac{x^4 \sqrt{b c-a d}}{\sqrt{a} \sqrt{c+d x^8}}\right )}{8 a^{3/2} (b c-a d)^{3/2}}+\frac{b x^4 \sqrt{c+d x^8}}{8 a \left (a+b x^8\right ) (b c-a d)} \]

Antiderivative was successfully verified.

[In]  Int[x^3/((a + b*x^8)^2*Sqrt[c + d*x^8]),x]

[Out]

(b*x^4*Sqrt[c + d*x^8])/(8*a*(b*c - a*d)*(a + b*x^8)) + ((b*c - 2*a*d)*ArcTan[(S
qrt[b*c - a*d]*x^4)/(Sqrt[a]*Sqrt[c + d*x^8])])/(8*a^(3/2)*(b*c - a*d)^(3/2))

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Rubi in Sympy [A]  time = 29.4384, size = 87, normalized size = 0.84 \[ - \frac{b x^{4} \sqrt{c + d x^{8}}}{8 a \left (a + b x^{8}\right ) \left (a d - b c\right )} + \frac{\left (2 a d - b c\right ) \operatorname{atanh}{\left (\frac{x^{4} \sqrt{a d - b c}}{\sqrt{a} \sqrt{c + d x^{8}}} \right )}}{8 a^{\frac{3}{2}} \left (a d - b c\right )^{\frac{3}{2}}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  rubi_integrate(x**3/(b*x**8+a)**2/(d*x**8+c)**(1/2),x)

[Out]

-b*x**4*sqrt(c + d*x**8)/(8*a*(a + b*x**8)*(a*d - b*c)) + (2*a*d - b*c)*atanh(x*
*4*sqrt(a*d - b*c)/(sqrt(a)*sqrt(c + d*x**8)))/(8*a**(3/2)*(a*d - b*c)**(3/2))

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Mathematica [A]  time = 0.173083, size = 104, normalized size = 1. \[ \frac{\frac{\sqrt{a} b x^4 \sqrt{c+d x^8}}{\left (a+b x^8\right ) (b c-a d)}+\frac{(b c-2 a d) \tan ^{-1}\left (\frac{x^4 \sqrt{b c-a d}}{\sqrt{a} \sqrt{c+d x^8}}\right )}{(b c-a d)^{3/2}}}{8 a^{3/2}} \]

Antiderivative was successfully verified.

[In]  Integrate[x^3/((a + b*x^8)^2*Sqrt[c + d*x^8]),x]

[Out]

((Sqrt[a]*b*x^4*Sqrt[c + d*x^8])/((b*c - a*d)*(a + b*x^8)) + ((b*c - 2*a*d)*ArcT
an[(Sqrt[b*c - a*d]*x^4)/(Sqrt[a]*Sqrt[c + d*x^8])])/(b*c - a*d)^(3/2))/(8*a^(3/
2))

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Maple [F]  time = 0.066, size = 0, normalized size = 0. \[ \int{\frac{{x}^{3}}{ \left ( b{x}^{8}+a \right ) ^{2}}{\frac{1}{\sqrt{d{x}^{8}+c}}}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  int(x^3/(b*x^8+a)^2/(d*x^8+c)^(1/2),x)

[Out]

int(x^3/(b*x^8+a)^2/(d*x^8+c)^(1/2),x)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \[ \int \frac{x^{3}}{{\left (b x^{8} + a\right )}^{2} \sqrt{d x^{8} + c}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x^3/((b*x^8 + a)^2*sqrt(d*x^8 + c)),x, algorithm="maxima")

[Out]

integrate(x^3/((b*x^8 + a)^2*sqrt(d*x^8 + c)), x)

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Fricas [A]  time = 0.357933, size = 1, normalized size = 0.01 \[ \left [\frac{4 \, \sqrt{d x^{8} + c} \sqrt{-a b c + a^{2} d} b x^{4} +{\left ({\left (b^{2} c - 2 \, a b d\right )} x^{8} + a b c - 2 \, a^{2} d\right )} \log \left (\frac{4 \,{\left ({\left (a b^{2} c^{2} - 3 \, a^{2} b c d + 2 \, a^{3} d^{2}\right )} x^{12} -{\left (a^{2} b c^{2} - a^{3} c d\right )} x^{4}\right )} \sqrt{d x^{8} + c} +{\left ({\left (b^{2} c^{2} - 8 \, a b c d + 8 \, a^{2} d^{2}\right )} x^{16} - 2 \,{\left (3 \, a b c^{2} - 4 \, a^{2} c d\right )} x^{8} + a^{2} c^{2}\right )} \sqrt{-a b c + a^{2} d}}{b^{2} x^{16} + 2 \, a b x^{8} + a^{2}}\right )}{32 \,{\left ({\left (a b^{2} c - a^{2} b d\right )} x^{8} + a^{2} b c - a^{3} d\right )} \sqrt{-a b c + a^{2} d}}, \frac{2 \, \sqrt{d x^{8} + c} \sqrt{a b c - a^{2} d} b x^{4} +{\left ({\left (b^{2} c - 2 \, a b d\right )} x^{8} + a b c - 2 \, a^{2} d\right )} \arctan \left (\frac{{\left (b c - 2 \, a d\right )} x^{8} - a c}{2 \, \sqrt{d x^{8} + c} \sqrt{a b c - a^{2} d} x^{4}}\right )}{16 \,{\left ({\left (a b^{2} c - a^{2} b d\right )} x^{8} + a^{2} b c - a^{3} d\right )} \sqrt{a b c - a^{2} d}}\right ] \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x^3/((b*x^8 + a)^2*sqrt(d*x^8 + c)),x, algorithm="fricas")

[Out]

[1/32*(4*sqrt(d*x^8 + c)*sqrt(-a*b*c + a^2*d)*b*x^4 + ((b^2*c - 2*a*b*d)*x^8 + a
*b*c - 2*a^2*d)*log((4*((a*b^2*c^2 - 3*a^2*b*c*d + 2*a^3*d^2)*x^12 - (a^2*b*c^2
- a^3*c*d)*x^4)*sqrt(d*x^8 + c) + ((b^2*c^2 - 8*a*b*c*d + 8*a^2*d^2)*x^16 - 2*(3
*a*b*c^2 - 4*a^2*c*d)*x^8 + a^2*c^2)*sqrt(-a*b*c + a^2*d))/(b^2*x^16 + 2*a*b*x^8
+ a^2)))/(((a*b^2*c - a^2*b*d)*x^8 + a^2*b*c - a^3*d)*sqrt(-a*b*c + a^2*d)), 1/
16*(2*sqrt(d*x^8 + c)*sqrt(a*b*c - a^2*d)*b*x^4 + ((b^2*c - 2*a*b*d)*x^8 + a*b*c
- 2*a^2*d)*arctan(1/2*((b*c - 2*a*d)*x^8 - a*c)/(sqrt(d*x^8 + c)*sqrt(a*b*c - a
^2*d)*x^4)))/(((a*b^2*c - a^2*b*d)*x^8 + a^2*b*c - a^3*d)*sqrt(a*b*c - a^2*d))]

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Sympy [F(-1)]  time = 0., size = 0, normalized size = 0. \[ \text{Timed out} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x**3/(b*x**8+a)**2/(d*x**8+c)**(1/2),x)

[Out]

Timed out

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GIAC/XCAS [A]  time = 0.236756, size = 320, normalized size = 3.08 \[ -\frac{1}{8} \, d^{\frac{3}{2}}{\left (\frac{{\left (b c - 2 \, a d\right )} \arctan \left (\frac{{\left (\sqrt{d} x^{4} - \sqrt{d x^{8} + c}\right )}^{2} b - b c + 2 \, a d}{2 \, \sqrt{a b c d - a^{2} d^{2}}}\right )}{{\left (a b c d - a^{2} d^{2}\right )}^{\frac{3}{2}}} + \frac{2 \,{\left ({\left (\sqrt{d} x^{4} - \sqrt{d x^{8} + c}\right )}^{2} b c - 2 \,{\left (\sqrt{d} x^{4} - \sqrt{d x^{8} + c}\right )}^{2} a d - b c^{2}\right )}}{{\left ({\left (\sqrt{d} x^{4} - \sqrt{d x^{8} + c}\right )}^{4} b - 2 \,{\left (\sqrt{d} x^{4} - \sqrt{d x^{8} + c}\right )}^{2} b c + 4 \,{\left (\sqrt{d} x^{4} - \sqrt{d x^{8} + c}\right )}^{2} a d + b c^{2}\right )}{\left (a b c d - a^{2} d^{2}\right )}}\right )} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]  integrate(x^3/((b*x^8 + a)^2*sqrt(d*x^8 + c)),x, algorithm="giac")

[Out]

-1/8*d^(3/2)*((b*c - 2*a*d)*arctan(1/2*((sqrt(d)*x^4 - sqrt(d*x^8 + c))^2*b - b*
c + 2*a*d)/sqrt(a*b*c*d - a^2*d^2))/(a*b*c*d - a^2*d^2)^(3/2) + 2*((sqrt(d)*x^4
- sqrt(d*x^8 + c))^2*b*c - 2*(sqrt(d)*x^4 - sqrt(d*x^8 + c))^2*a*d - b*c^2)/(((s
qrt(d)*x^4 - sqrt(d*x^8 + c))^4*b - 2*(sqrt(d)*x^4 - sqrt(d*x^8 + c))^2*b*c + 4*
(sqrt(d)*x^4 - sqrt(d*x^8 + c))^2*a*d + b*c^2)*(a*b*c*d - a^2*d^2)))