Find the average rate of change of the given function betwee
Find the average rate of change of the given function between the following pairs of x-values. (Round your answers to four decimal places.)
f(x) = 4 x
for the following:
(a) x = 4 and x = 6
(b) x = 4 and x = 5
(c) x = 4 and x = 4.5
(d) x = 4 and x = 4.1
(e) x = 4 and x = 4.01
(f) What number do your answers seem to be approaching?
Solution
average rate of change of f(x) in [a,b] is [f(b)-f(a)]/(b-a)
f(x) = 4 x
(a) x = 4 and x = 6
average rate of change =[46 -44]/(6-4) =0.8990
(b) x = 4 and x = 5
average rate of change =[45 -44]/(5-4) =0.9443
(c) x = 4 and x = 4.5
average rate of change =[44.5 -44]/(4.5-4) =0.9706
(d) x = 4 and x = 4.1
average rate of change =[44.1 -44]/(4.1-4) =0.9938
(e) x = 4 and x = 4.01
average rate of change =[44.01 -44]/(4.01-4) =0.9994
(f) answers are approaching number 1

