Solve these using spreadsheet approximation

1. Use the limits definition f ac lim f(x h) f(2) to show that the derivative to h 0 h the curve f (x) = 7% is f'(x) = In7-(7x). 2. Given f (x) = ex, verify that lim eith h e" and explain how this illustrates that f' ( x) = Ine . ex = ex