find the derivative

f(x)= 4xe^x
f(x) = ln (2z-11)^7
f(x) = ln (x-1/3x+1)

In google type calc101

When you see list of results click on:
Calc101 com Automatic Calculus,linear Algebra,and Polynomals

When page be open click option derivatives

When that page be open in rectangle type your function and click option DO IT

4*x*e^(x)

ln[x-(1/3)x+1]

ln[(2z-11)]^7

In this case you must type
with respect to:z
and again with respect to:z