3.226 \(\int \frac {x^8}{(a+b x)^{10}} \, dx\)

Optimal. Leaf size=17 \[ \frac {x^9}{9 a (a+b x)^9} \]

[Out]

1/9*x^9/a/(b*x+a)^9

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Rubi [A]  time = 0.00, antiderivative size = 17, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, integrand size = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {37} \[ \frac {x^9}{9 a (a+b x)^9} \]

Antiderivative was successfully verified.

[In]

Int[x^8/(a + b*x)^10,x]

[Out]

x^9/(9*a*(a + b*x)^9)

Rule 37

Int[((a_.) + (b_.)*(x_))^(m_.)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[((a + b*x)^(m + 1)*(c + d*x)^(n +
1))/((b*c - a*d)*(m + 1)), x] /; FreeQ[{a, b, c, d, m, n}, x] && NeQ[b*c - a*d, 0] && EqQ[m + n + 2, 0] && NeQ
[m, -1]

Rubi steps

\begin {align*} \int \frac {x^8}{(a+b x)^{10}} \, dx &=\frac {x^9}{9 a (a+b x)^9}\\ \end {align*}

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Mathematica [B]  time = 0.02, size = 97, normalized size = 5.71 \[ -\frac {a^8+9 a^7 b x+36 a^6 b^2 x^2+84 a^5 b^3 x^3+126 a^4 b^4 x^4+126 a^3 b^5 x^5+84 a^2 b^6 x^6+36 a b^7 x^7+9 b^8 x^8}{9 b^9 (a+b x)^9} \]

Antiderivative was successfully verified.

[In]

Integrate[x^8/(a + b*x)^10,x]

[Out]

-1/9*(a^8 + 9*a^7*b*x + 36*a^6*b^2*x^2 + 84*a^5*b^3*x^3 + 126*a^4*b^4*x^4 + 126*a^3*b^5*x^5 + 84*a^2*b^6*x^6 +
36*a*b^7*x^7 + 9*b^8*x^8)/(b^9*(a + b*x)^9)

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fricas [B]  time = 0.45, size = 186, normalized size = 10.94 \[ -\frac {9 \, b^{8} x^{8} + 36 \, a b^{7} x^{7} + 84 \, a^{2} b^{6} x^{6} + 126 \, a^{3} b^{5} x^{5} + 126 \, a^{4} b^{4} x^{4} + 84 \, a^{5} b^{3} x^{3} + 36 \, a^{6} b^{2} x^{2} + 9 \, a^{7} b x + a^{8}}{9 \, {\left (b^{18} x^{9} + 9 \, a b^{17} x^{8} + 36 \, a^{2} b^{16} x^{7} + 84 \, a^{3} b^{15} x^{6} + 126 \, a^{4} b^{14} x^{5} + 126 \, a^{5} b^{13} x^{4} + 84 \, a^{6} b^{12} x^{3} + 36 \, a^{7} b^{11} x^{2} + 9 \, a^{8} b^{10} x + a^{9} b^{9}\right )}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^8/(b*x+a)^10,x, algorithm="fricas")

[Out]

-1/9*(9*b^8*x^8 + 36*a*b^7*x^7 + 84*a^2*b^6*x^6 + 126*a^3*b^5*x^5 + 126*a^4*b^4*x^4 + 84*a^5*b^3*x^3 + 36*a^6*
b^2*x^2 + 9*a^7*b*x + a^8)/(b^18*x^9 + 9*a*b^17*x^8 + 36*a^2*b^16*x^7 + 84*a^3*b^15*x^6 + 126*a^4*b^14*x^5 + 1
26*a^5*b^13*x^4 + 84*a^6*b^12*x^3 + 36*a^7*b^11*x^2 + 9*a^8*b^10*x + a^9*b^9)

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giac [B]  time = 1.23, size = 95, normalized size = 5.59 \[ -\frac {9 \, b^{8} x^{8} + 36 \, a b^{7} x^{7} + 84 \, a^{2} b^{6} x^{6} + 126 \, a^{3} b^{5} x^{5} + 126 \, a^{4} b^{4} x^{4} + 84 \, a^{5} b^{3} x^{3} + 36 \, a^{6} b^{2} x^{2} + 9 \, a^{7} b x + a^{8}}{9 \, {\left (b x + a\right )}^{9} b^{9}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^8/(b*x+a)^10,x, algorithm="giac")

[Out]

-1/9*(9*b^8*x^8 + 36*a*b^7*x^7 + 84*a^2*b^6*x^6 + 126*a^3*b^5*x^5 + 126*a^4*b^4*x^4 + 84*a^5*b^3*x^3 + 36*a^6*
b^2*x^2 + 9*a^7*b*x + a^8)/((b*x + a)^9*b^9)

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maple [B]  time = 0.01, size = 131, normalized size = 7.71 \[ -\frac {a^{8}}{9 \left (b x +a \right )^{9} b^{9}}+\frac {a^{7}}{\left (b x +a \right )^{8} b^{9}}-\frac {4 a^{6}}{\left (b x +a \right )^{7} b^{9}}+\frac {28 a^{5}}{3 \left (b x +a \right )^{6} b^{9}}-\frac {14 a^{4}}{\left (b x +a \right )^{5} b^{9}}+\frac {14 a^{3}}{\left (b x +a \right )^{4} b^{9}}-\frac {28 a^{2}}{3 \left (b x +a \right )^{3} b^{9}}+\frac {4 a}{\left (b x +a \right )^{2} b^{9}}-\frac {1}{\left (b x +a \right ) b^{9}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^8/(b*x+a)^10,x)

[Out]

28/3*a^5/b^9/(b*x+a)^6+4*a/b^9/(b*x+a)^2-14*a^4/b^9/(b*x+a)^5+a^7/b^9/(b*x+a)^8-28/3*a^2/b^9/(b*x+a)^3+14*a^3/
b^9/(b*x+a)^4-1/9*a^8/b^9/(b*x+a)^9-4*a^6/b^9/(b*x+a)^7-1/b^9/(b*x+a)

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maxima [B]  time = 1.51, size = 186, normalized size = 10.94 \[ -\frac {9 \, b^{8} x^{8} + 36 \, a b^{7} x^{7} + 84 \, a^{2} b^{6} x^{6} + 126 \, a^{3} b^{5} x^{5} + 126 \, a^{4} b^{4} x^{4} + 84 \, a^{5} b^{3} x^{3} + 36 \, a^{6} b^{2} x^{2} + 9 \, a^{7} b x + a^{8}}{9 \, {\left (b^{18} x^{9} + 9 \, a b^{17} x^{8} + 36 \, a^{2} b^{16} x^{7} + 84 \, a^{3} b^{15} x^{6} + 126 \, a^{4} b^{14} x^{5} + 126 \, a^{5} b^{13} x^{4} + 84 \, a^{6} b^{12} x^{3} + 36 \, a^{7} b^{11} x^{2} + 9 \, a^{8} b^{10} x + a^{9} b^{9}\right )}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^8/(b*x+a)^10,x, algorithm="maxima")

[Out]

-1/9*(9*b^8*x^8 + 36*a*b^7*x^7 + 84*a^2*b^6*x^6 + 126*a^3*b^5*x^5 + 126*a^4*b^4*x^4 + 84*a^5*b^3*x^3 + 36*a^6*
b^2*x^2 + 9*a^7*b*x + a^8)/(b^18*x^9 + 9*a*b^17*x^8 + 36*a^2*b^16*x^7 + 84*a^3*b^15*x^6 + 126*a^4*b^14*x^5 + 1
26*a^5*b^13*x^4 + 84*a^6*b^12*x^3 + 36*a^7*b^11*x^2 + 9*a^8*b^10*x + a^9*b^9)

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mupad [B]  time = 0.14, size = 107, normalized size = 6.29 \[ -\frac {\frac {1}{a+b\,x}-\frac {4\,a}{{\left (a+b\,x\right )}^2}+\frac {28\,a^2}{3\,{\left (a+b\,x\right )}^3}-\frac {14\,a^3}{{\left (a+b\,x\right )}^4}+\frac {14\,a^4}{{\left (a+b\,x\right )}^5}-\frac {28\,a^5}{3\,{\left (a+b\,x\right )}^6}+\frac {4\,a^6}{{\left (a+b\,x\right )}^7}-\frac {a^7}{{\left (a+b\,x\right )}^8}+\frac {a^8}{9\,{\left (a+b\,x\right )}^9}}{b^9} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^8/(a + b*x)^10,x)

[Out]

-(1/(a + b*x) - (4*a)/(a + b*x)^2 + (28*a^2)/(3*(a + b*x)^3) - (14*a^3)/(a + b*x)^4 + (14*a^4)/(a + b*x)^5 - (
28*a^5)/(3*(a + b*x)^6) + (4*a^6)/(a + b*x)^7 - a^7/(a + b*x)^8 + a^8/(9*(a + b*x)^9))/b^9

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sympy [B]  time = 0.98, size = 199, normalized size = 11.71 \[ \frac {- a^{8} - 9 a^{7} b x - 36 a^{6} b^{2} x^{2} - 84 a^{5} b^{3} x^{3} - 126 a^{4} b^{4} x^{4} - 126 a^{3} b^{5} x^{5} - 84 a^{2} b^{6} x^{6} - 36 a b^{7} x^{7} - 9 b^{8} x^{8}}{9 a^{9} b^{9} + 81 a^{8} b^{10} x + 324 a^{7} b^{11} x^{2} + 756 a^{6} b^{12} x^{3} + 1134 a^{5} b^{13} x^{4} + 1134 a^{4} b^{14} x^{5} + 756 a^{3} b^{15} x^{6} + 324 a^{2} b^{16} x^{7} + 81 a b^{17} x^{8} + 9 b^{18} x^{9}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**8/(b*x+a)**10,x)

[Out]

(-a**8 - 9*a**7*b*x - 36*a**6*b**2*x**2 - 84*a**5*b**3*x**3 - 126*a**4*b**4*x**4 - 126*a**3*b**5*x**5 - 84*a**
2*b**6*x**6 - 36*a*b**7*x**7 - 9*b**8*x**8)/(9*a**9*b**9 + 81*a**8*b**10*x + 324*a**7*b**11*x**2 + 756*a**6*b*
*12*x**3 + 1134*a**5*b**13*x**4 + 1134*a**4*b**14*x**5 + 756*a**3*b**15*x**6 + 324*a**2*b**16*x**7 + 81*a*b**1
7*x**8 + 9*b**18*x**9)

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