# Math Help - Delta value

1. ## Delta value

In usual notations Delta = .........

(a) 1- E
(b) E-1
(c) 1 - E^-1
(d) E^-1- 1

I am confused according to me it should be option a

2. ## Re: Delta value

Was there a question associated with this list of options? There are several different math techniques involving " $\delta$" and " $\epsilon$". The most common is in proving a limit of a funcion: $\lim_{x\to a} f(x)= L$. But, even then, how $\delta$ and $/epsilon$ are related depends upon the function f and the point a.