This is a question of which i have not got a clear visualization still , so thought of asking for your views on it.
In the textbook, there are two separate chapters... one is "Differentiability" and the other is "Differentiation"... My question is simple :
What is the difference between the two?
Why i asked this is because when we see the proofs of differentiation of any basic functions (be it $\cos x$, $\sin x$, $e^x$, $\tan x$, etc.) ,they are proved by the method "differentiation from first principles" using the basic definition of Differentiability at a point.
I tried to read the answers on this forum for similar questions like this previously asked, but the answers to them were of higher understanding level which i have not been enlightened yet. Is there any simple explanation available for this..If anyone can help me understand the difference between the two in simple words, kindly do so... and thanks a lot for all your help.