Integrand size = 14, antiderivative size = 21 \[ \int \sqrt [3]{3+4 x+2 x^2} \, dx=(1+x) \operatorname {Hypergeometric2F1}\left (-\frac {1}{3},\frac {1}{2},\frac {3}{2},-2 (1+x)^2\right ) \] Output:
(1+x)*hypergeom([-1/3, 1/2],[3/2],-2*(1+x)^2)
Time = 5.52 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00 \[ \int \sqrt [3]{3+4 x+2 x^2} \, dx=(1+x) \operatorname {Hypergeometric2F1}\left (-\frac {1}{3},\frac {1}{2},\frac {3}{2},-2 (1+x)^2\right ) \] Input:
Integrate[(3 + 4*x + 2*x^2)^(1/3),x]
Output:
(1 + x)*Hypergeometric2F1[-1/3, 1/2, 3/2, -2*(1 + x)^2]
Leaf count is larger than twice the leaf count of optimal. \(158\) vs. \(2(21)=42\).
Time = 0.44 (sec) , antiderivative size = 158, normalized size of antiderivative = 7.52, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {1087, 1090, 234, 760}
Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.
\(\displaystyle \int \sqrt [3]{2 x^2+4 x+3} \, dx\) |
\(\Big \downarrow \) 1087 |
\(\displaystyle \frac {2}{5} \int \frac {1}{\left (2 x^2+4 x+3\right )^{2/3}}dx+\frac {3}{5} \sqrt [3]{2 x^2+4 x+3} (x+1)\) |
\(\Big \downarrow \) 1090 |
\(\displaystyle \frac {1}{10} \int \frac {1}{\left (\frac {1}{8} (4 x+4)^2+1\right )^{2/3}}d(4 x+4)+\frac {3}{5} \sqrt [3]{2 x^2+4 x+3} (x+1)\) |
\(\Big \downarrow \) 234 |
\(\displaystyle \frac {3 \sqrt {(4 x+4)^2} \int \frac {2 \sqrt {2}}{\sqrt {(4 x+4)^2}}d\sqrt [3]{\frac {1}{8} (4 x+4)^2+1}}{5 \sqrt {2} (4 x+4)}+\frac {3}{5} \sqrt [3]{2 x^2+4 x+3} (x+1)\) |
\(\Big \downarrow \) 760 |
\(\displaystyle \frac {3}{5} (x+1) \sqrt [3]{2 x^2+4 x+3}-\frac {4\ 3^{3/4} \sqrt {2-\sqrt {3}} (-4 x-3) \sqrt {\frac {4 x+\left (\frac {1}{8} (4 x+4)^2+1\right )^{2/3}+5}{\left (-4 x-\sqrt {3}-3\right )^2}} \operatorname {EllipticF}\left (\arcsin \left (\frac {-4 x+\sqrt {3}-3}{-4 x-\sqrt {3}-3}\right ),-7+4 \sqrt {3}\right )}{5 \sqrt {-\frac {-4 x-3}{\left (-4 x-\sqrt {3}-3\right )^2}} (4 x+4)}\) |
Input:
Int[(3 + 4*x + 2*x^2)^(1/3),x]
Output:
(3*(1 + x)*(3 + 4*x + 2*x^2)^(1/3))/5 - (4*3^(3/4)*Sqrt[2 - Sqrt[3]]*(-3 - 4*x)*Sqrt[(5 + 4*x + (1 + (4 + 4*x)^2/8)^(2/3))/(-3 - Sqrt[3] - 4*x)^2]*E llipticF[ArcSin[(-3 + Sqrt[3] - 4*x)/(-3 - Sqrt[3] - 4*x)], -7 + 4*Sqrt[3] ])/(5*Sqrt[-((-3 - 4*x)/(-3 - Sqrt[3] - 4*x)^2)]*(4 + 4*x))
Int[((a_) + (b_.)*(x_)^2)^(-2/3), x_Symbol] :> Simp[3*(Sqrt[b*x^2]/(2*b*x)) Subst[Int[1/Sqrt[-a + x^3], x], x, (a + b*x^2)^(1/3)], x] /; FreeQ[{a, b }, x]
Int[1/Sqrt[(a_) + (b_.)*(x_)^3], x_Symbol] :> With[{r = Numer[Rt[b/a, 3]], s = Denom[Rt[b/a, 3]]}, Simp[2*Sqrt[2 - Sqrt[3]]*(s + r*x)*(Sqrt[(s^2 - r*s *x + r^2*x^2)/((1 - Sqrt[3])*s + r*x)^2]/(3^(1/4)*r*Sqrt[a + b*x^3]*Sqrt[(- s)*((s + r*x)/((1 - Sqrt[3])*s + r*x)^2)]))*EllipticF[ArcSin[((1 + Sqrt[3]) *s + r*x)/((1 - Sqrt[3])*s + r*x)], -7 + 4*Sqrt[3]], x]] /; FreeQ[{a, b}, x ] && NegQ[a]
Int[((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_Symbol] :> Simp[(b + 2*c*x) *((a + b*x + c*x^2)^p/(2*c*(2*p + 1))), x] - Simp[p*((b^2 - 4*a*c)/(2*c*(2* p + 1))) Int[(a + b*x + c*x^2)^(p - 1), x], x] /; FreeQ[{a, b, c}, x] && GtQ[p, 0] && (IntegerQ[4*p] || IntegerQ[3*p])
Int[((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_Symbol] :> Simp[1/(2*c*(-4* (c/(b^2 - 4*a*c)))^p) Subst[Int[Simp[1 - x^2/(b^2 - 4*a*c), x]^p, x], x, b + 2*c*x], x] /; FreeQ[{a, b, c, p}, x] && GtQ[4*a - b^2/c, 0]
\[\int \left (2 x^{2}+4 x +3\right )^{\frac {1}{3}}d x\]
Input:
int((2*x^2+4*x+3)^(1/3),x)
Output:
int((2*x^2+4*x+3)^(1/3),x)
\[ \int \sqrt [3]{3+4 x+2 x^2} \, dx=\int { {\left (2 \, x^{2} + 4 \, x + 3\right )}^{\frac {1}{3}} \,d x } \] Input:
integrate((2*x^2+4*x+3)^(1/3),x, algorithm="fricas")
Output:
integral((2*x^2 + 4*x + 3)^(1/3), x)
\[ \int \sqrt [3]{3+4 x+2 x^2} \, dx=\int \sqrt [3]{2 x^{2} + 4 x + 3}\, dx \] Input:
integrate((2*x**2+4*x+3)**(1/3),x)
Output:
Integral((2*x**2 + 4*x + 3)**(1/3), x)
\[ \int \sqrt [3]{3+4 x+2 x^2} \, dx=\int { {\left (2 \, x^{2} + 4 \, x + 3\right )}^{\frac {1}{3}} \,d x } \] Input:
integrate((2*x^2+4*x+3)^(1/3),x, algorithm="maxima")
Output:
integrate((2*x^2 + 4*x + 3)^(1/3), x)
\[ \int \sqrt [3]{3+4 x+2 x^2} \, dx=\int { {\left (2 \, x^{2} + 4 \, x + 3\right )}^{\frac {1}{3}} \,d x } \] Input:
integrate((2*x^2+4*x+3)^(1/3),x, algorithm="giac")
Output:
integrate((2*x^2 + 4*x + 3)^(1/3), x)
Timed out. \[ \int \sqrt [3]{3+4 x+2 x^2} \, dx=\int {\left (2\,x^2+4\,x+3\right )}^{1/3} \,d x \] Input:
int((4*x + 2*x^2 + 3)^(1/3),x)
Output:
int((4*x + 2*x^2 + 3)^(1/3), x)
\[ \int \sqrt [3]{3+4 x+2 x^2} \, dx=\frac {3 \left (2 x^{2}+4 x +3\right )^{\frac {1}{3}} x}{5}+\frac {9 \left (2 x^{2}+4 x +3\right )^{\frac {1}{3}}}{10}-\frac {2 \left (\int \frac {x}{\left (2 x^{2}+4 x +3\right )^{\frac {2}{3}}}d x \right )}{5} \] Input:
int((2*x^2+4*x+3)^(1/3),x)
Output:
(6*(2*x**2 + 4*x + 3)**(1/3)*x + 9*(2*x**2 + 4*x + 3)**(1/3) - 4*int(((2*x **2 + 4*x + 3)**(1/3)*x)/(2*x**2 + 4*x + 3),x))/10