3.406 \(\int \frac{x^3}{(a+b x)^{2/3}} \, dx\)
Optimal. Leaf size=70 \[ \frac{9 a^2 (a+b x)^{4/3}}{4 b^4}-\frac{3 a^3 \sqrt [3]{a+b x}}{b^4}+\frac{3 (a+b x)^{10/3}}{10 b^4}-\frac{9 a (a+b x)^{7/3}}{7 b^4} \]
[Out]
(-3*a^3*(a + b*x)^(1/3))/b^4 + (9*a^2*(a + b*x)^(4/3))/(4*b^4) - (9*a*(a + b*x)^(7/3))/(7*b^4) + (3*(a + b*x)^
(10/3))/(10*b^4)
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Rubi [A] time = 0.0182285, antiderivative size = 70, normalized size of antiderivative = 1.,
number of steps used = 2, number of rules used = 1, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.077, Rules used =
{43} \[ \frac{9 a^2 (a+b x)^{4/3}}{4 b^4}-\frac{3 a^3 \sqrt [3]{a+b x}}{b^4}+\frac{3 (a+b x)^{10/3}}{10 b^4}-\frac{9 a (a+b x)^{7/3}}{7 b^4} \]
Antiderivative was successfully verified.
[In]
Int[x^3/(a + b*x)^(2/3),x]
[Out]
(-3*a^3*(a + b*x)^(1/3))/b^4 + (9*a^2*(a + b*x)^(4/3))/(4*b^4) - (9*a*(a + b*x)^(7/3))/(7*b^4) + (3*(a + b*x)^
(10/3))/(10*b^4)
Rule 43
Int[((a_.) + (b_.)*(x_))^(m_.)*((c_.) + (d_.)*(x_))^(n_.), x_Symbol] :> Int[ExpandIntegrand[(a + b*x)^m*(c + d
*x)^n, x], x] /; FreeQ[{a, b, c, d, n}, x] && NeQ[b*c - a*d, 0] && IGtQ[m, 0] && ( !IntegerQ[n] || (EqQ[c, 0]
&& LeQ[7*m + 4*n + 4, 0]) || LtQ[9*m + 5*(n + 1), 0] || GtQ[m + n + 2, 0])
Rubi steps
\begin{align*} \int \frac{x^3}{(a+b x)^{2/3}} \, dx &=\int \left (-\frac{a^3}{b^3 (a+b x)^{2/3}}+\frac{3 a^2 \sqrt [3]{a+b x}}{b^3}-\frac{3 a (a+b x)^{4/3}}{b^3}+\frac{(a+b x)^{7/3}}{b^3}\right ) \, dx\\ &=-\frac{3 a^3 \sqrt [3]{a+b x}}{b^4}+\frac{9 a^2 (a+b x)^{4/3}}{4 b^4}-\frac{9 a (a+b x)^{7/3}}{7 b^4}+\frac{3 (a+b x)^{10/3}}{10 b^4}\\ \end{align*}
Mathematica [A] time = 0.0506735, size = 46, normalized size = 0.66 \[ \frac{3 \sqrt [3]{a+b x} \left (27 a^2 b x-81 a^3-18 a b^2 x^2+14 b^3 x^3\right )}{140 b^4} \]
Antiderivative was successfully verified.
[In]
Integrate[x^3/(a + b*x)^(2/3),x]
[Out]
(3*(a + b*x)^(1/3)*(-81*a^3 + 27*a^2*b*x - 18*a*b^2*x^2 + 14*b^3*x^3))/(140*b^4)
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Maple [A] time = 0.004, size = 43, normalized size = 0.6 \begin{align*} -{\frac{-42\,{b}^{3}{x}^{3}+54\,a{b}^{2}{x}^{2}-81\,{a}^{2}bx+243\,{a}^{3}}{140\,{b}^{4}}\sqrt [3]{bx+a}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
int(x^3/(b*x+a)^(2/3),x)
[Out]
-3/140*(b*x+a)^(1/3)*(-14*b^3*x^3+18*a*b^2*x^2-27*a^2*b*x+81*a^3)/b^4
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Maxima [A] time = 1.03641, size = 76, normalized size = 1.09 \begin{align*} \frac{3 \,{\left (b x + a\right )}^{\frac{10}{3}}}{10 \, b^{4}} - \frac{9 \,{\left (b x + a\right )}^{\frac{7}{3}} a}{7 \, b^{4}} + \frac{9 \,{\left (b x + a\right )}^{\frac{4}{3}} a^{2}}{4 \, b^{4}} - \frac{3 \,{\left (b x + a\right )}^{\frac{1}{3}} a^{3}}{b^{4}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
integrate(x^3/(b*x+a)^(2/3),x, algorithm="maxima")
[Out]
3/10*(b*x + a)^(10/3)/b^4 - 9/7*(b*x + a)^(7/3)*a/b^4 + 9/4*(b*x + a)^(4/3)*a^2/b^4 - 3*(b*x + a)^(1/3)*a^3/b^
4
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Fricas [A] time = 1.55516, size = 104, normalized size = 1.49 \begin{align*} \frac{3 \,{\left (14 \, b^{3} x^{3} - 18 \, a b^{2} x^{2} + 27 \, a^{2} b x - 81 \, a^{3}\right )}{\left (b x + a\right )}^{\frac{1}{3}}}{140 \, b^{4}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
integrate(x^3/(b*x+a)^(2/3),x, algorithm="fricas")
[Out]
3/140*(14*b^3*x^3 - 18*a*b^2*x^2 + 27*a^2*b*x - 81*a^3)*(b*x + a)^(1/3)/b^4
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Sympy [B] time = 3.55856, size = 1640, normalized size = 23.43 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
integrate(x**3/(b*x+a)**(2/3),x)
[Out]
-243*a**(70/3)*(1 + b*x/a)**(1/3)/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*
x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) + 243*a**(70/3)/(140*a**20*b**4 + 84
0*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 14
0*a**14*b**10*x**6) - 1377*a**(67/3)*b*x*(1 + b*x/a)**(1/3)/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b*
*6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) + 1458*a**
(67/3)*b*x/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*
x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) - 3213*a**(64/3)*b**2*x**2*(1 + b*x/a)**(1/3)/(140*a**20*b*
*4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x*
*5 + 140*a**14*b**10*x**6) + 3645*a**(64/3)*b**2*x**2/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**
2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) - 3927*a**(61/3)
*b**3*x**3*(1 + b*x/a)**(1/3)/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3
+ 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) + 4860*a**(61/3)*b**3*x**3/(140*a**20*b*
*4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x*
*5 + 140*a**14*b**10*x**6) - 2583*a**(58/3)*b**4*x**4*(1 + b*x/a)**(1/3)/(140*a**20*b**4 + 840*a**19*b**5*x +
2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**
6) + 3645*a**(58/3)*b**4*x**4/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3
+ 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) - 693*a**(55/3)*b**5*x**5*(1 + b*x/a)**(
1/3)/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 +
840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) + 1458*a**(55/3)*b**5*x**5/(140*a**20*b**4 + 840*a**19*b**5*x + 2
100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6
) + 273*a**(52/3)*b**6*x**6*(1 + b*x/a)**(1/3)/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 280
0*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) + 243*a**(52/3)*b**6*x*
*6/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 8
40*a**15*b**9*x**5 + 140*a**14*b**10*x**6) + 387*a**(49/3)*b**7*x**7*(1 + b*x/a)**(1/3)/(140*a**20*b**4 + 840*
a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*
a**14*b**10*x**6) + 198*a**(46/3)*b**8*x**8*(1 + b*x/a)**(1/3)/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18
*b**6*x**2 + 2800*a**17*b**7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6) + 42*a*
*(43/3)*b**9*x**9*(1 + b*x/a)**(1/3)/(140*a**20*b**4 + 840*a**19*b**5*x + 2100*a**18*b**6*x**2 + 2800*a**17*b*
*7*x**3 + 2100*a**16*b**8*x**4 + 840*a**15*b**9*x**5 + 140*a**14*b**10*x**6)
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Giac [A] time = 1.20013, size = 66, normalized size = 0.94 \begin{align*} \frac{3 \,{\left (14 \,{\left (b x + a\right )}^{\frac{10}{3}} - 60 \,{\left (b x + a\right )}^{\frac{7}{3}} a + 105 \,{\left (b x + a\right )}^{\frac{4}{3}} a^{2} - 140 \,{\left (b x + a\right )}^{\frac{1}{3}} a^{3}\right )}}{140 \, b^{4}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
integrate(x^3/(b*x+a)^(2/3),x, algorithm="giac")
[Out]
3/140*(14*(b*x + a)^(10/3) - 60*(b*x + a)^(7/3)*a + 105*(b*x + a)^(4/3)*a^2 - 140*(b*x + a)^(1/3)*a^3)/b^4