# Math Help - How to find f'(a) of this equation?

1. ## How to find f'(a) of this equation?

Find f'(a). How do I do this?

2. Originally Posted by ajcadoo
Find f'(a). How do I do this?

Differentiate it to get $f'(t)$ , then put $t=a$.

3. Originally Posted by Ted
Differentiate it to get $f'(t)$ , then put $t=a$.
Ok, how would I differentiate it? BTW, we are still in the limits unit, so I have no idea what all these derivatives terms mean.

4. Originally Posted by ajcadoo
Ok, how would I differentiate it? BTW, we are still in the limits unit, so I have no idea what all these derivatives terms mean.
Well, Use the rule:

$f'(a) = \lim_{t\to a} \frac{f(t)-f(a)}{t-a}$.

5. Originally Posted by Ted
Well, Use the rule:

$f'(a) = \lim_{t\to a} \frac{f(t)-f(a)}{t-a}$.
ahh, gotcha. kudos to you.