+0

0
48
1

The function defined by $$f(x) = \left\{ \begin{array}{cl} x + k & \text{if x < 4}, \\ 2x - 3 & \text{if x \ge 4} \end{array} \right.$$
has an inverse, and the inverse is defined for all real numbers. Enter all possible values of $$k$$ separated by commas

The ANSWER IS NOT 3, 8

Apr 15, 2020