Question

Suppose R'(1)=16.
a) If f(x)=R(5x), find f '(1/5)
b) If g(x)=R(x+8), find g'(−7)
c)If
h(x) = R(x/7), find h'(7)

Answer 1

f ' (x)=R'(5x)*5
f ' (1/5)=R ' (5*1/5)*5=R'(1)*5
R'(1)=16 given
f ' (1/5)=16*5=80

Answer 2

similarly do for other