3.10.55 \(\int \frac {x^6}{(1+x^4)^{3/2}} \, dx\) [955]

Optimal. Leaf size=124 \[ -\frac {x^3}{2 \sqrt {1+x^4}}+\frac {3 x \sqrt {1+x^4}}{2 \left (1+x^2\right )}-\frac {3 \left (1+x^2\right ) \sqrt {\frac {1+x^4}{\left (1+x^2\right )^2}} E\left (2 \tan ^{-1}(x)|\frac {1}{2}\right )}{2 \sqrt {1+x^4}}+\frac {3 \left (1+x^2\right ) \sqrt {\frac {1+x^4}{\left (1+x^2\right )^2}} F\left (2 \tan ^{-1}(x)|\frac {1}{2}\right )}{4 \sqrt {1+x^4}} \]

[Out]

-1/2*x^3/(x^4+1)^(1/2)+3/2*x*(x^4+1)^(1/2)/(x^2+1)-3/2*(x^2+1)*(cos(2*arctan(x))^2)^(1/2)/cos(2*arctan(x))*Ell
ipticE(sin(2*arctan(x)),1/2*2^(1/2))*((x^4+1)/(x^2+1)^2)^(1/2)/(x^4+1)^(1/2)+3/4*(x^2+1)*(cos(2*arctan(x))^2)^
(1/2)/cos(2*arctan(x))*EllipticF(sin(2*arctan(x)),1/2*2^(1/2))*((x^4+1)/(x^2+1)^2)^(1/2)/(x^4+1)^(1/2)

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Rubi [A]
time = 0.02, antiderivative size = 124, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {294, 311, 226, 1210} \begin {gather*} \frac {3 \left (x^2+1\right ) \sqrt {\frac {x^4+1}{\left (x^2+1\right )^2}} F\left (2 \text {ArcTan}(x)\left |\frac {1}{2}\right .\right )}{4 \sqrt {x^4+1}}-\frac {3 \left (x^2+1\right ) \sqrt {\frac {x^4+1}{\left (x^2+1\right )^2}} E\left (2 \text {ArcTan}(x)\left |\frac {1}{2}\right .\right )}{2 \sqrt {x^4+1}}-\frac {x^3}{2 \sqrt {x^4+1}}+\frac {3 \sqrt {x^4+1} x}{2 \left (x^2+1\right )} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[x^6/(1 + x^4)^(3/2),x]

[Out]

-1/2*x^3/Sqrt[1 + x^4] + (3*x*Sqrt[1 + x^4])/(2*(1 + x^2)) - (3*(1 + x^2)*Sqrt[(1 + x^4)/(1 + x^2)^2]*Elliptic
E[2*ArcTan[x], 1/2])/(2*Sqrt[1 + x^4]) + (3*(1 + x^2)*Sqrt[(1 + x^4)/(1 + x^2)^2]*EllipticF[2*ArcTan[x], 1/2])
/(4*Sqrt[1 + x^4])

Rule 226

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)]/(2*q*Sqrt[a + b*x^4]))*EllipticF[2*ArcTan[q*x], 1/2], x]] /; FreeQ[{a, b}, x] && PosQ[b/a]

Rule 294

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

Rule 311

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

Rule 1210

Int[((d_) + (e_.)*(x_)^2)/Sqrt[(a_) + (c_.)*(x_)^4], x_Symbol] :> With[{q = Rt[c/a, 4]}, Simp[(-d)*x*(Sqrt[a +
c*x^4]/(a*(1 + q^2*x^2))), x] + Simp[d*(1 + q^2*x^2)*(Sqrt[(a + c*x^4)/(a*(1 + q^2*x^2)^2)]/(q*Sqrt[a + c*x^4
]))*EllipticE[2*ArcTan[q*x], 1/2], x] /; EqQ[e + d*q^2, 0]] /; FreeQ[{a, c, d, e}, x] && PosQ[c/a]

Rubi steps

\begin {align*} \int \frac {x^6}{\left (1+x^4\right )^{3/2}} \, dx &=-\frac {x^3}{2 \sqrt {1+x^4}}+\frac {3}{2} \int \frac {x^2}{\sqrt {1+x^4}} \, dx\\ &=-\frac {x^3}{2 \sqrt {1+x^4}}+\frac {3}{2} \int \frac {1}{\sqrt {1+x^4}} \, dx-\frac {3}{2} \int \frac {1-x^2}{\sqrt {1+x^4}} \, dx\\ &=-\frac {x^3}{2 \sqrt {1+x^4}}+\frac {3 x \sqrt {1+x^4}}{2 \left (1+x^2\right )}-\frac {3 \left (1+x^2\right ) \sqrt {\frac {1+x^4}{\left (1+x^2\right )^2}} E\left (2 \tan ^{-1}(x)|\frac {1}{2}\right )}{2 \sqrt {1+x^4}}+\frac {3 \left (1+x^2\right ) \sqrt {\frac {1+x^4}{\left (1+x^2\right )^2}} F\left (2 \tan ^{-1}(x)|\frac {1}{2}\right )}{4 \sqrt {1+x^4}}\\ \end {align*}

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Mathematica [C] Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
time = 3.75, size = 31, normalized size = 0.25 \begin {gather*} x^3 \left (\frac {1}{\sqrt {1+x^4}}-\, _2F_1\left (\frac {3}{4},\frac {3}{2};\frac {7}{4};-x^4\right )\right ) \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[x^6/(1 + x^4)^(3/2),x]

[Out]

x^3*(1/Sqrt[1 + x^4] - Hypergeometric2F1[3/4, 3/2, 7/4, -x^4])

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Maple [C] Result contains complex when optimal does not.
time = 0.15, size = 95, normalized size = 0.77

method	result	size
meijerg	\(\frac {x^{7} \hypergeom \left (\left [\frac {3}{2}, \frac {7}{4}\right ], \left [\frac {11}{4}\right ], -x^{4}\right )}{7}\)	\(17\)
default	\(-\frac {x^{3}}{2 \sqrt {x^{4}+1}}+\frac {3 i \sqrt {-i x^{2}+1}\, \sqrt {i x^{2}+1}\, \left (\EllipticF \left (x \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ), i\right )-\EllipticE \left (x \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ), i\right )\right )}{2 \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ) \sqrt {x^{4}+1}}\)	\(95\)
risch	\(-\frac {x^{3}}{2 \sqrt {x^{4}+1}}+\frac {3 i \sqrt {-i x^{2}+1}\, \sqrt {i x^{2}+1}\, \left (\EllipticF \left (x \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ), i\right )-\EllipticE \left (x \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ), i\right )\right )}{2 \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ) \sqrt {x^{4}+1}}\)	\(95\)
elliptic	\(-\frac {x^{3}}{2 \sqrt {x^{4}+1}}+\frac {3 i \sqrt {-i x^{2}+1}\, \sqrt {i x^{2}+1}\, \left (\EllipticF \left (x \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ), i\right )-\EllipticE \left (x \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ), i\right )\right )}{2 \left (\frac {\sqrt {2}}{2}+\frac {i \sqrt {2}}{2}\right ) \sqrt {x^{4}+1}}\)	\(95\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^6/(x^4+1)^(3/2),x,method=_RETURNVERBOSE)

[Out]

-1/2*x^3/(x^4+1)^(1/2)+3/2*I/(1/2*2^(1/2)+1/2*I*2^(1/2))*(1-I*x^2)^(1/2)*(1+I*x^2)^(1/2)/(x^4+1)^(1/2)*(Ellipt
icF(x*(1/2*2^(1/2)+1/2*I*2^(1/2)),I)-EllipticE(x*(1/2*2^(1/2)+1/2*I*2^(1/2)),I))

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Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

integrate(x^6/(x^4 + 1)^(3/2), x)

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Fricas [C] Result contains complex when optimal does not.
time = 0.09, size = 74, normalized size = 0.60 \begin {gather*} -\frac {3 \, \sqrt {i} {\left (-i \, x^{5} - i \, x\right )} E(\arcsin \left (\frac {\sqrt {i}}{x}\right )\,|\,-1) + 3 \, \sqrt {i} {\left (i \, x^{5} + i \, x\right )} F(\arcsin \left (\frac {\sqrt {i}}{x}\right )\,|\,-1) - {\left (2 \, x^{4} + 3\right )} \sqrt {x^{4} + 1}}{2 \, {\left (x^{5} + x\right )}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-1/2*(3*sqrt(I)*(-I*x^5 - I*x)*elliptic_e(arcsin(sqrt(I)/x), -1) + 3*sqrt(I)*(I*x^5 + I*x)*elliptic_f(arcsin(s
qrt(I)/x), -1) - (2*x^4 + 3)*sqrt(x^4 + 1))/(x^5 + x)

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Sympy [C] Result contains complex when optimal does not.
time = 0.36, size = 29, normalized size = 0.23 \begin {gather*} \frac {x^{7} \Gamma \left (\frac {7}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {3}{2}, \frac {7}{4} \\ \frac {11}{4} \end {matrix}\middle | {x^{4} e^{i \pi }} \right )}}{4 \Gamma \left (\frac {11}{4}\right )} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

x**7*gamma(7/4)*hyper((3/2, 7/4), (11/4,), x**4*exp_polar(I*pi))/(4*gamma(11/4))

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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

integrate(x^6/(x^4 + 1)^(3/2), x)

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

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^6/(x^4 + 1)^(3/2),x)

[Out]

int(x^6/(x^4 + 1)^(3/2), x)

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