Find the derivative of `"f"("x")=99"x\ a t\ x"=100`

Explanation

We have given the function `99x` ,

Then `f(x)=99x`

Now by derivative formula,

`f'(a)=lim(h->0)(f(a+h)-f(a))/h`

`f'(a)=lim(h->0)(99(a+h)-99(a))/h`

At `x=100`

`f'(100)=lim(h->0)((9900+99h)-9900)/h`

`f'(100)=lim(h->0)(9900+99h-9900)/h`

...