- #1
andilus
- 8
- 0
how to prove
lim(x->a)[tex]\frac{f(x)-f(a)}{x-a}[/tex]=lim(h->0)[tex]\frac{f(a+h)-f(a)}{h}[/tex]
it seems to be obvious, but i don't know how to prove```
lim(x->a)[tex]\frac{f(x)-f(a)}{x-a}[/tex]=lim(h->0)[tex]\frac{f(a+h)-f(a)}{h}[/tex]
it seems to be obvious, but i don't know how to prove```