Question

Find the derivative of f(x)=7 by the limit process

Answer 1

`f'(x)=\displaystyle\lim_(h\to0)\frac{f(x+h)-f(x)}h`

If
`f(x)=7`, then


`f'(x)=\displaystyle\lim_(h\to0)\frac{7-7}h=0`

which is what you expect from a constant function.