∫ 1 3 x 2 e x ( 1 − x ) d x
The value of the integral above has a simple closed form. Find the value of this closed form.
Give your answer to 3 decimal places.
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For computing ∫ 1 3 x 2 e x ( 1 − x ) d x = − x 1 e x ( 1 − x ) − e x + C
Don't forget the ∫ a b = lim x → b − ( F ( x ) ) − lim x → a + ( F ( x ) )
That makes e − 3 e 3 = − 3 . 9 7 7 6 9 □
FIN!!!
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∫ e x x 2 ( 1 − x ) d x = ∫ x 2 e x d x − ∫ x e x d x , l e t u = e x a n d d v = x 2 d x , d u = e x d x , v = x − 1 , ∫ x 2 e x d x = u v − ∫ v d u = x − e x + ∫ x e x d x , ∫ x 2 e x ( 1 − x ) d x = x − e x + ∫ x e x d x − ∫ x e x d x = x − e x + C