Question

what does "e" represent? how come "e" has a value in the calculator? does this apply to all mathematical problems?

i'm asking out of curiosity instead of rewriting a homework problem.

Answer 1

It arises in population and continuous compounding interest problem.

ie,

dp/dt= kp

you will learn it when you take differential equation

Answer 2

You will learn about e much sooner than Diff EQ... you use it in natural logs (by definition)... most of wikipedia's information is accurate: http://en.wikipedia.org/wiki/E_%28mathematical_constant%29
But wolfram has better info about current use.
http://mathworld.wolfram.com/e.html

Answer 3

thanks both of you!
you two deserve medals (lol)