Find $f(3)$.
Which piece of the function should be used to find $f(3)$ ?
\[
f(x)=\left\{\begin{array}{ll}
x+2 & \text { if } x< 1 \\
x-1 & \text { if } x \geq 1
\end{array}\right.
\]
$x+2$
$x-1$

Answer

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Answer

Final Answer: $f(3) = \boxed{2}$

Steps

Step 1 ：The function is defined as $f(x)=\left\{\begin{array}{ll} x+2 & \text { if } x<1 \\ x-1 & \text { if } x \geq 1 \end{array}\right.$

Step 2 ：We need to find $f(3)$.

Step 3 ：Since 3 is greater than 1, we should use the second piece of the function, $x-1$, to find $f(3)$.

Step 4 ：Substitute $x = 3$ into $x - 1$ to get $f(3) = 2$.

Step 5 ：Final Answer: $f(3) = \boxed{2}$