# Question: let fx x24x x lt 8 4x x gt...

###### Question details

Let fx= {x^2-4x x < 8 , 4x x > 8

Is f continuous at x=8?

Is f differentiable at x=8?

If f is differentiable at x=8 enter the value f'(8). If f is not differentiable at x=8 enter the value of f(8) instead.

f'(8) or f(8)=