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## Main Question or Discussion Point

Ok, i am hoping we can (owing to the large amounts of questions in the homework help on stuff like this) create a nice guide for Calculus in 3D including definitions, practise questions and general examples.

Firstly, i know something i really do not like is Limits.

My text book gives the definition of:

now, in terms that i can understand ( i hate the way that is all shoved into one sentence there has to be someone who can break it up so that it makes sense!) i have found this definition:

ok now. this needs to be related back.

lim f(x) = L

x > a

This is the limit of f(x) as x approaches a. No worries there. Now what is L?

Firstly, i know something i really do not like is Limits.

My text book gives the definition of:

*"Suppose l is a real number. Then the limit of f(x), as x approaches c, is equal to l if for any number e > 0 there exists a number d >0 such that |f(x) - l | < e whenever 0 < | x - c | < d"*now, in terms that i can understand ( i hate the way that is all shoved into one sentence there has to be someone who can break it up so that it makes sense!) i have found this definition:

*I tell you how close I need to be, and you can tell me what I have to do to be that close.*(from http://www.karlscalculus.org/calc2.html [Broken] )ok now. this needs to be related back.

lim f(x) = L

x > a

This is the limit of f(x) as x approaches a. No worries there. Now what is L?

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