3.123 \(\int x (a+b x)^5 (A+B x) \, dx\)

Optimal. Leaf size=61 \[ \frac {(a+b x)^7 (A b-2 a B)}{7 b^3}-\frac {a (a+b x)^6 (A b-a B)}{6 b^3}+\frac {B (a+b x)^8}{8 b^3} \]

[Out]

-1/6*a*(A*b-B*a)*(b*x+a)^6/b^3+1/7*(A*b-2*B*a)*(b*x+a)^7/b^3+1/8*B*(b*x+a)^8/b^3

________________________________________________________________________________________

Rubi [A]  time = 0.04, antiderivative size = 61, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.071, Rules used = {76} \[ \frac {(a+b x)^7 (A b-2 a B)}{7 b^3}-\frac {a (a+b x)^6 (A b-a B)}{6 b^3}+\frac {B (a+b x)^8}{8 b^3} \]

Antiderivative was successfully verified.

[In]

Int[x*(a + b*x)^5*(A + B*x),x]

[Out]

-(a*(A*b - a*B)*(a + b*x)^6)/(6*b^3) + ((A*b - 2*a*B)*(a + b*x)^7)/(7*b^3) + (B*(a + b*x)^8)/(8*b^3)

Rule 76

Int[((d_.)*(x_))^(n_.)*((a_) + (b_.)*(x_))*((e_) + (f_.)*(x_))^(p_.), x_Symbol] :> Int[ExpandIntegrand[(a + b*
x)*(d*x)^n*(e + f*x)^p, x], x] /; FreeQ[{a, b, d, e, f, n}, x] && IGtQ[p, 0] && (NeQ[n, -1] || EqQ[p, 1]) && N
eQ[b*e + a*f, 0] && ( !IntegerQ[n] || LtQ[9*p + 5*n, 0] || GeQ[n + p + 1, 0] || (GeQ[n + p + 2, 0] && Rational
Q[a, b, d, e, f])) && (NeQ[n + p + 3, 0] || EqQ[p, 1])

Rubi steps

\begin {align*} \int x (a+b x)^5 (A+B x) \, dx &=\int \left (\frac {a (-A b+a B) (a+b x)^5}{b^2}+\frac {(A b-2 a B) (a+b x)^6}{b^2}+\frac {B (a+b x)^7}{b^2}\right ) \, dx\\ &=-\frac {a (A b-a B) (a+b x)^6}{6 b^3}+\frac {(A b-2 a B) (a+b x)^7}{7 b^3}+\frac {B (a+b x)^8}{8 b^3}\\ \end {align*}

________________________________________________________________________________________

Mathematica [A]  time = 0.03, size = 115, normalized size = 1.89 \[ \frac {1}{2} a^5 A x^2+\frac {1}{3} a^4 x^3 (a B+5 A b)+\frac {5}{4} a^3 b x^4 (a B+2 A b)+2 a^2 b^2 x^5 (a B+A b)+\frac {1}{7} b^4 x^7 (5 a B+A b)+\frac {5}{6} a b^3 x^6 (2 a B+A b)+\frac {1}{8} b^5 B x^8 \]

Antiderivative was successfully verified.

[In]

Integrate[x*(a + b*x)^5*(A + B*x),x]

[Out]

(a^5*A*x^2)/2 + (a^4*(5*A*b + a*B)*x^3)/3 + (5*a^3*b*(2*A*b + a*B)*x^4)/4 + 2*a^2*b^2*(A*b + a*B)*x^5 + (5*a*b
^3*(A*b + 2*a*B)*x^6)/6 + (b^4*(A*b + 5*a*B)*x^7)/7 + (b^5*B*x^8)/8

________________________________________________________________________________________

fricas [B]  time = 0.58, size = 125, normalized size = 2.05 \[ \frac {1}{8} x^{8} b^{5} B + \frac {5}{7} x^{7} b^{4} a B + \frac {1}{7} x^{7} b^{5} A + \frac {5}{3} x^{6} b^{3} a^{2} B + \frac {5}{6} x^{6} b^{4} a A + 2 x^{5} b^{2} a^{3} B + 2 x^{5} b^{3} a^{2} A + \frac {5}{4} x^{4} b a^{4} B + \frac {5}{2} x^{4} b^{2} a^{3} A + \frac {1}{3} x^{3} a^{5} B + \frac {5}{3} x^{3} b a^{4} A + \frac {1}{2} x^{2} a^{5} A \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*(b*x+a)^5*(B*x+A),x, algorithm="fricas")

[Out]

1/8*x^8*b^5*B + 5/7*x^7*b^4*a*B + 1/7*x^7*b^5*A + 5/3*x^6*b^3*a^2*B + 5/6*x^6*b^4*a*A + 2*x^5*b^2*a^3*B + 2*x^
5*b^3*a^2*A + 5/4*x^4*b*a^4*B + 5/2*x^4*b^2*a^3*A + 1/3*x^3*a^5*B + 5/3*x^3*b*a^4*A + 1/2*x^2*a^5*A

________________________________________________________________________________________

giac [B]  time = 1.22, size = 125, normalized size = 2.05 \[ \frac {1}{8} \, B b^{5} x^{8} + \frac {5}{7} \, B a b^{4} x^{7} + \frac {1}{7} \, A b^{5} x^{7} + \frac {5}{3} \, B a^{2} b^{3} x^{6} + \frac {5}{6} \, A a b^{4} x^{6} + 2 \, B a^{3} b^{2} x^{5} + 2 \, A a^{2} b^{3} x^{5} + \frac {5}{4} \, B a^{4} b x^{4} + \frac {5}{2} \, A a^{3} b^{2} x^{4} + \frac {1}{3} \, B a^{5} x^{3} + \frac {5}{3} \, A a^{4} b x^{3} + \frac {1}{2} \, A a^{5} x^{2} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*(b*x+a)^5*(B*x+A),x, algorithm="giac")

[Out]

1/8*B*b^5*x^8 + 5/7*B*a*b^4*x^7 + 1/7*A*b^5*x^7 + 5/3*B*a^2*b^3*x^6 + 5/6*A*a*b^4*x^6 + 2*B*a^3*b^2*x^5 + 2*A*
a^2*b^3*x^5 + 5/4*B*a^4*b*x^4 + 5/2*A*a^3*b^2*x^4 + 1/3*B*a^5*x^3 + 5/3*A*a^4*b*x^3 + 1/2*A*a^5*x^2

________________________________________________________________________________________

maple [B]  time = 0.00, size = 124, normalized size = 2.03 \[ \frac {B \,b^{5} x^{8}}{8}+\frac {A \,a^{5} x^{2}}{2}+\frac {\left (b^{5} A +5 a \,b^{4} B \right ) x^{7}}{7}+\frac {\left (5 a \,b^{4} A +10 a^{2} b^{3} B \right ) x^{6}}{6}+\frac {\left (10 a^{2} b^{3} A +10 a^{3} b^{2} B \right ) x^{5}}{5}+\frac {\left (10 a^{3} b^{2} A +5 a^{4} b B \right ) x^{4}}{4}+\frac {\left (5 a^{4} b A +a^{5} B \right ) x^{3}}{3} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x*(b*x+a)^5*(B*x+A),x)

[Out]

1/8*b^5*B*x^8+1/7*(A*b^5+5*B*a*b^4)*x^7+1/6*(5*A*a*b^4+10*B*a^2*b^3)*x^6+1/5*(10*A*a^2*b^3+10*B*a^3*b^2)*x^5+1
/4*(10*A*a^3*b^2+5*B*a^4*b)*x^4+1/3*(5*A*a^4*b+B*a^5)*x^3+1/2*a^5*A*x^2

________________________________________________________________________________________

maxima [B]  time = 1.13, size = 119, normalized size = 1.95 \[ \frac {1}{8} \, B b^{5} x^{8} + \frac {1}{2} \, A a^{5} x^{2} + \frac {1}{7} \, {\left (5 \, B a b^{4} + A b^{5}\right )} x^{7} + \frac {5}{6} \, {\left (2 \, B a^{2} b^{3} + A a b^{4}\right )} x^{6} + 2 \, {\left (B a^{3} b^{2} + A a^{2} b^{3}\right )} x^{5} + \frac {5}{4} \, {\left (B a^{4} b + 2 \, A a^{3} b^{2}\right )} x^{4} + \frac {1}{3} \, {\left (B a^{5} + 5 \, A a^{4} b\right )} x^{3} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*(b*x+a)^5*(B*x+A),x, algorithm="maxima")

[Out]

1/8*B*b^5*x^8 + 1/2*A*a^5*x^2 + 1/7*(5*B*a*b^4 + A*b^5)*x^7 + 5/6*(2*B*a^2*b^3 + A*a*b^4)*x^6 + 2*(B*a^3*b^2 +
A*a^2*b^3)*x^5 + 5/4*(B*a^4*b + 2*A*a^3*b^2)*x^4 + 1/3*(B*a^5 + 5*A*a^4*b)*x^3

________________________________________________________________________________________

mupad [B]  time = 0.04, size = 107, normalized size = 1.75 \[ x^3\,\left (\frac {B\,a^5}{3}+\frac {5\,A\,b\,a^4}{3}\right )+x^7\,\left (\frac {A\,b^5}{7}+\frac {5\,B\,a\,b^4}{7}\right )+\frac {A\,a^5\,x^2}{2}+\frac {B\,b^5\,x^8}{8}+2\,a^2\,b^2\,x^5\,\left (A\,b+B\,a\right )+\frac {5\,a^3\,b\,x^4\,\left (2\,A\,b+B\,a\right )}{4}+\frac {5\,a\,b^3\,x^6\,\left (A\,b+2\,B\,a\right )}{6} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x*(A + B*x)*(a + b*x)^5,x)

[Out]

x^3*((B*a^5)/3 + (5*A*a^4*b)/3) + x^7*((A*b^5)/7 + (5*B*a*b^4)/7) + (A*a^5*x^2)/2 + (B*b^5*x^8)/8 + 2*a^2*b^2*
x^5*(A*b + B*a) + (5*a^3*b*x^4*(2*A*b + B*a))/4 + (5*a*b^3*x^6*(A*b + 2*B*a))/6

________________________________________________________________________________________

sympy [B]  time = 0.12, size = 134, normalized size = 2.20 \[ \frac {A a^{5} x^{2}}{2} + \frac {B b^{5} x^{8}}{8} + x^{7} \left (\frac {A b^{5}}{7} + \frac {5 B a b^{4}}{7}\right ) + x^{6} \left (\frac {5 A a b^{4}}{6} + \frac {5 B a^{2} b^{3}}{3}\right ) + x^{5} \left (2 A a^{2} b^{3} + 2 B a^{3} b^{2}\right ) + x^{4} \left (\frac {5 A a^{3} b^{2}}{2} + \frac {5 B a^{4} b}{4}\right ) + x^{3} \left (\frac {5 A a^{4} b}{3} + \frac {B a^{5}}{3}\right ) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x*(b*x+a)**5*(B*x+A),x)

[Out]

A*a**5*x**2/2 + B*b**5*x**8/8 + x**7*(A*b**5/7 + 5*B*a*b**4/7) + x**6*(5*A*a*b**4/6 + 5*B*a**2*b**3/3) + x**5*
(2*A*a**2*b**3 + 2*B*a**3*b**2) + x**4*(5*A*a**3*b**2/2 + 5*B*a**4*b/4) + x**3*(5*A*a**4*b/3 + B*a**5/3)

________________________________________________________________________________________