Need help understanding math concept
So I need to fully understand definite integral. What exactly is dx? I hear people say it's a base of a infinitely small rectangle and integral is just adding up infinite infinitely small rectangles. I understand an infinitely small rectangle to have 0 area. If you add up infinite 0s, shouldn't you just get 0? I do know how to solve integrals methodically, but just don't really understand the notation of dx.
September 19, 2013
2 Comments • Newest first
[quote=Sociis]dx is the derivative of x ......[/quote]
So integral of e^x dx = e^x + constant. I don't see how [quote=Sociis]dx is the derivative of x ......[/quote] fits.
My concepts are also shaky so I could be wrong.
dx is very small bits of x
So far in math, it's only used as indications on how to perform an operation.