Question

what's the limit of f(x) = x^2 + 3 as x--> 2

Answer 1

just substitute x = 2

Answer 2

since we have no indeterminant form at x=2, just do what moneybird said

Answer 3

wait we're just starting to get into these....what do you substitute and why?

Answer 4

if you plug in x=2 then you get an direct answer: the limit
if you were to plug in x=2 and got zero in the denominator, or 0/0, or some other indeterminant form, you would have to rearrange the expression to avoid division by zero. fortunately for you we have no such problem, so just plug in the number :)

Answer 5

thanks so much!