3.2.87 \(\int x (9+12 x+4 x^2)^{3/2} \, dx\)

Optimal. Leaf size=42 \[ \frac {1}{20} \left (4 x^2+12 x+9\right )^{5/2}-\frac {3}{16} (2 x+3) \left (4 x^2+12 x+9\right )^{3/2} \]

________________________________________________________________________________________

Rubi [A]  time = 0.01, antiderivative size = 42, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {640, 609} \begin {gather*} \frac {1}{20} \left (4 x^2+12 x+9\right )^{5/2}-\frac {3}{16} (2 x+3) \left (4 x^2+12 x+9\right )^{3/2} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[x*(9 + 12*x + 4*x^2)^(3/2),x]

[Out]

(-3*(3 + 2*x)*(9 + 12*x + 4*x^2)^(3/2))/16 + (9 + 12*x + 4*x^2)^(5/2)/20

Rule 609

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] /; FreeQ[{a, b, c, p}, x] && EqQ[b^2 - 4*a*c, 0] && NeQ[p, -2^(-1)]

Rule 640

Int[((d_.) + (e_.)*(x_))*((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_Symbol] :> Simp[(e*(a + b*x + c*x^2)^(p +
1))/(2*c*(p + 1)), x] + Dist[(2*c*d - b*e)/(2*c), Int[(a + b*x + c*x^2)^p, x], x] /; FreeQ[{a, b, c, d, e, p}
, x] && NeQ[2*c*d - b*e, 0] && NeQ[p, -1]

Rubi steps

\begin {align*} \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx &=\frac {1}{20} \left (9+12 x+4 x^2\right )^{5/2}-\frac {3}{2} \int \left (9+12 x+4 x^2\right )^{3/2} \, dx\\ &=-\frac {3}{16} (3+2 x) \left (9+12 x+4 x^2\right )^{3/2}+\frac {1}{20} \left (9+12 x+4 x^2\right )^{5/2}\\ \end {align*}

________________________________________________________________________________________

Mathematica [A]  time = 0.01, size = 37, normalized size = 0.88 \begin {gather*} \frac {x^2 \sqrt {(2 x+3)^2} \left (16 x^3+90 x^2+180 x+135\right )}{20 x+30} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[x*(9 + 12*x + 4*x^2)^(3/2),x]

[Out]

(x^2*Sqrt[(3 + 2*x)^2]*(135 + 180*x + 90*x^2 + 16*x^3))/(30 + 20*x)

________________________________________________________________________________________

IntegrateAlgebraic [F]  time = 0.13, size = 0, normalized size = 0.00 \begin {gather*} \int x \left (9+12 x+4 x^2\right )^{3/2} \, dx \end {gather*}

Verification is not applicable to the result.

[In]

IntegrateAlgebraic[x*(9 + 12*x + 4*x^2)^(3/2),x]

[Out]

Defer[IntegrateAlgebraic][x*(9 + 12*x + 4*x^2)^(3/2), x]

________________________________________________________________________________________

fricas [A]  time = 0.41, size = 21, normalized size = 0.50 \begin {gather*} \frac {8}{5} \, x^{5} + 9 \, x^{4} + 18 \, x^{3} + \frac {27}{2} \, x^{2} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*(4*x^2+12*x+9)^(3/2),x, algorithm="fricas")

[Out]

8/5*x^5 + 9*x^4 + 18*x^3 + 27/2*x^2

________________________________________________________________________________________

giac [A]  time = 0.18, size = 53, normalized size = 1.26 \begin {gather*} \frac {8}{5} \, x^{5} \mathrm {sgn}\left (2 \, x + 3\right ) + 9 \, x^{4} \mathrm {sgn}\left (2 \, x + 3\right ) + 18 \, x^{3} \mathrm {sgn}\left (2 \, x + 3\right ) + \frac {27}{2} \, x^{2} \mathrm {sgn}\left (2 \, x + 3\right ) - \frac {243}{80} \, \mathrm {sgn}\left (2 \, x + 3\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*(4*x^2+12*x+9)^(3/2),x, algorithm="giac")

[Out]

8/5*x^5*sgn(2*x + 3) + 9*x^4*sgn(2*x + 3) + 18*x^3*sgn(2*x + 3) + 27/2*x^2*sgn(2*x + 3) - 243/80*sgn(2*x + 3)

________________________________________________________________________________________

maple [A]  time = 0.04, size = 37, normalized size = 0.88 \begin {gather*} \frac {\left (16 x^{3}+90 x^{2}+180 x +135\right ) \left (\left (2 x +3\right )^{2}\right )^{\frac {3}{2}} x^{2}}{10 \left (2 x +3\right )^{3}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x*(4*x^2+12*x+9)^(3/2),x)

[Out]

1/10*x^2*(16*x^3+90*x^2+180*x+135)*((2*x+3)^2)^(3/2)/(2*x+3)^3

________________________________________________________________________________________

maxima [A]  time = 2.96, size = 44, normalized size = 1.05 \begin {gather*} \frac {1}{20} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {5}{2}} - \frac {3}{8} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {3}{2}} x - \frac {9}{16} \, {\left (4 \, x^{2} + 12 \, x + 9\right )}^{\frac {3}{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*(4*x^2+12*x+9)^(3/2),x, algorithm="maxima")

[Out]

1/20*(4*x^2 + 12*x + 9)^(5/2) - 3/8*(4*x^2 + 12*x + 9)^(3/2)*x - 9/16*(4*x^2 + 12*x + 9)^(3/2)

________________________________________________________________________________________

mupad [B]  time = 0.05, size = 24, normalized size = 0.57 \begin {gather*} \frac {{\left (4\,x^2+12\,x+9\right )}^{3/2}\,\left (16\,x^2+18\,x-9\right )}{80} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x*(12*x + 4*x^2 + 9)^(3/2),x)

[Out]

((12*x + 4*x^2 + 9)^(3/2)*(18*x + 16*x^2 - 9))/80

________________________________________________________________________________________

sympy [F]  time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int x \left (\left (2 x + 3\right )^{2}\right )^{\frac {3}{2}}\, dx \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*(4*x**2+12*x+9)**(3/2),x)

[Out]

Integral(x*((2*x + 3)**2)**(3/2), x)

________________________________________________________________________________________