Question

Let f(x)=x√x-4



What is the average rate of change of f(x) from 8 to 14?

Answer 1

Avg rate of change =

[ f(14 ) - f(8) ] / [ 14 - 8 ] =

[ ( √ [14 - 4] ) - (√ [8 - 4]) ] / 6 =

[ √10 - √4 ] / 6 =

0.19