Question

The function f(x)=e^x has a peculiar property. The slope at a point x has the same value as the value of the function at x.
Suppose x=1, you have f(1)=e and the slope also is e.
Can this property be proved geometrically.
(Since geometric proofs are intuitive! :))

Answer 1

Saubhik did u see my happy b-day wish?

Answer 2

where is it?

Answer 3

Moon....
i've posted it in here 4 days ago....:P