What-do-we-mean-by-f-x-dx-

Question Number 66293 by Rio Michael last updated on 12/Aug/19

W h a t d o w e m e a n b y

\int_{- \infty}^{+ \infty} f (x) d x ?

Commented by mathmax by abdo last updated on 12/Aug/19

\int_{- \infty}^{+ \infty} f (x) d x = {l i m}_{ξ \to + \infty} \int_{- ξ}^{ξ} f (x) d x a n d \int_{- ξ}^{ξ} f (x) d x i s t h e s u r f a c e

l i m i t e t e d b y y = 0 ((x^{^{'}} o x)) a n d y = f (x)

Commented by mathmax by abdo last updated on 12/Aug/19

o n] - ξ, ξ [\dots

Commented by Rio Michael last updated on 13/Aug/19

t h a n k s