Question

For the function defined by:
f(x){x^2, x<=1
2x+1, x>1
Evaluate f(0)
Explain/show

Answer 1

First, please verify that by the first line of your post you meant f(x) = x^2.

You want to evaluate f(0).  In this case, x = 0, so we evaluate f(x) = x^2 at x = 0:

f(0 = 0^2 = 0.

So, f(0) = 0