Question

Find the indicated limit, if it exists.

limit of f of x as x approaches 9 where f of x equals x plus 9 when x is less than 9 and f of x equals 9 minus x when x is greater than or equal to 9

Answer 1

\[\lim_{x \rightarrow 9} f(x), f(x)=\left[\begin{matrix}x+9 & x<9 \\ 27-x& x \ge9\end{matrix}\right]\]