What is the limit of #(4x^2+1)/(x^2+2x-3)# as x approaches -2?
1 Answer
Jul 3, 2016
Explanation:
Like polynomials, rational functions are continuous everywhere on their domains.
In our example, the denominator is non-zero at
#lim_(x->-2) f(x) = f(-2) = (16+1)/(4-4-3) = 17/(-3) = -17/3#
