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Give a specific function for F(x).
F(x) = ______________ + C.

2007-07-11 08:50:17 · 5 answers · asked by goodguy083 1 in Science & Mathematics Mathematics

5 answers

∫ x(x^2 + 2)^5 dx=...(*)

x^2+2=u
2xdx=du
xdx=1/2du =>
(*)=1/2 ∫u^5du=
(1/2)(u^6/6)+C=
(x^2+2)^6/12 + C

2007-07-11 09:00:50 · answer #1 · answered by cvet_che 2 · 0 0

make a substitution, u = x^2 + 2.

du = 2x dx

Therefore, x dx = du/2:

antiderivative (1/2) * (u^5) du. This is easy to integrate:

(1/2) * (1/6) * (u^6) = 1/12 * (u^6). Plug u back in:

F(x) = (1/12) * (x^2 + 5)^6 + C

2007-07-11 15:55:40 · answer #2 · answered by Alfred Sauce 3 · 0 0

I = ∫ x (x² + 2)^5 dx
Let u = x² + 2
du = 2x dx
du / 2 = x dx
I = (1/2) ∫ u^5 du
I = (1/2) u^6 / 6 + C
I = (1/12) (x² + 2)^6 + C

2007-07-11 17:53:53 · answer #3 · answered by Como 7 · 0 0

let, x^2 = u
du = 2x dx
du/2 = dx

antiderivative( (u + 5)^5 du/2 )

= 1/2*[(u + 5)^6]/6
= ((u+5)^6)/12 + c
= ((x^2 + 5)^6)/12 + c

2007-07-11 15:55:40 · answer #4 · answered by Anonymous · 0 0

Pie Squared ! 3.18278548\2

2007-07-11 15:54:21 · answer #5 · answered by Anonymous · 0 1

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