Question

Let

f(x)={x2+2xx+1if x≤−1if x>−1.
Evaluate the following:

1. f(−7) =
2. f(−1) =
3. f(0) =

Answer 1

Answer:
`35, -1, 1`

Explanation:

`-7 \leq -1 \implies f(-7)=(-7)^2 +2(-7)=35\\\\-1 \leq -1 \implies f(-1)=(-1)^2 +2(-1)=-1\\\\0 > -1 \implies f(0)=0+1=1`