Question

Given the piecewise function `f(x) = {2x + 1,x < -3 and 4x + 1, x ≥ -3}`, how do you evaluate f(-4)?

Answer 1

`f(-4) = -7`

Explanation:

`f(x)={2 x+1, x <-3 and 4 x+1 , x >= -3} , f(-4)= ?`

Since `(-4) < (-3)` , then, `f(x)={2 x+1)`

`:. f(-4) ={2 *(-4) +1}= -8 +1= -7` [Ans]