Find f prime of a

Question

Find f’a

f(t) = 1/t^2+1

Answer 1

To find f'(a) let's first take the derivative of f(t).

We have,

Now putting t = a we get,

.

Since it was not specified in the directions to use limit definition of a derivative in the instructions I'm not sure if that's what was wanted. However, I will still do the limit definition of a derivative.

So let's try it using that definition.

Hope this helps! If you are still confused I recommend watch youtube videos or going back to your notes.