Question

Describe the three methods for computing the lim f(x) as x approaches a.

Answer 1

you can find it numerically. plug in numbers very close to 'a'

Answer 2

f( a - e) or f ( a + e ) for e very small should equal to the limit

Answer 3

you can find it algebraically, by canceling common factors or multiply by conjugate.
and you can look at the graph and see if the limit exists

Answer 4

@perl Thank you. Those would be the three methods correct?

Answer 5

algebraic, numerical, and graphical are three ways to find limit

there's actually a fourth way to find a limit, using the formal epsilon delta definition