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## Main Question or Discussion Point

I'm a high school student and am a junior right now. I like physics, and quantum theory, perhaps because it will be our future.

Therefore, in order to understand it, I need to know calculus. Since I don't have homework, I don't work out the problems. I try to understand the critical concepts, then perhaps try and solve it.

Here's a problem I'm having with basic limits (Still can't figure out where to get the limit sign and stuff)

Where a = x and a is some given x value.

Then lim x -> a = f(x)

Or something like that. The point is this; I looked at the equation and could not understand one sided limits.

Here is something I don't understand. There are two asypthopes, horiztonal and vertical. As the function approached 3, I saw according to looking on the y axis..it went PAST 3..but looking on the x axis..it still had no reached 3.

So I think I'm looking at it wrong. Does a have to always equal a x value? Or can it equal a = f(x,y) later? (Mutivarible calc?)

Therefore, in order to understand it, I need to know calculus. Since I don't have homework, I don't work out the problems. I try to understand the critical concepts, then perhaps try and solve it.

Here's a problem I'm having with basic limits (Still can't figure out where to get the limit sign and stuff)

Where a = x and a is some given x value.

Then lim x -> a = f(x)

Or something like that. The point is this; I looked at the equation and could not understand one sided limits.

Here is something I don't understand. There are two asypthopes, horiztonal and vertical. As the function approached 3, I saw according to looking on the y axis..it went PAST 3..but looking on the x axis..it still had no reached 3.

So I think I'm looking at it wrong. Does a have to always equal a x value? Or can it equal a = f(x,y) later? (Mutivarible calc?)