math (1022) - Calc: limits 2

continued talking about limits today, did some exercises.. and now i understand whats going on.

the deal is to always sub the limit number into the limit letter thing.

eg.
lim
x -> 5

you sub the 5 into wherever x is.

but if its a 0, its undefined, you gotta factorize the top or bottom in order to cancel out some of the pronumerals.

thing about infinity thingies though.. you cant have them in fractions, gotta get rid of them. and as anything over x with the limit of x -> infinity, the anything over x will = 0

hope im not screwing upt hese ntoes coz im in a rush to play kh

cant have 0 on the denominator, so in order to get rid of it, divide everything (top and bottom) by the highest power of x (or whatever pronumeral that the limit is) on the denominator. otherwise, if its not 0 on the bottom anymore.. sub in man.

anyway.. hope i didnt miss anything.. im too excited to play.