finding the derivative

Question

f(x) = 2*1.15, estimate f'(x) using h= 0.001 for the following three values.

f'(-1.75)=

f'(1.25)=

f'(2.25)=

Answer 1

It looks line the question is trivial, because f(x) = 2(1.15), ie, a constant, and therefore f'(x) = 0 for any value of x.