Question

find f(-1) for the piece - wise function.
f(x)=
\

$$\begin{cases}x + 2&if x<2\\x + 1&if x\\geq2\\end{cases}$$

f(-1)=?

Explanation:

Step1: Determine the applicable part

Since - 1 < 2, we use the first - part of the piece - wise function $f(x)=x + 2$.

Step2: Substitute x = - 1

Substitute $x=-1$ into $f(x)=x + 2$, we get $f(-1)=-1 + 2$.

Step3: Calculate the result

$f(-1)=-1 + 2=1$.

Answer:

1