Question

how do u prove a limit whether it exist or not??

Answer 1

you must get the limit from the right and then the limit from the left, if they give the same value then the limit exist and the function is continuous

Answer 2

u have to use the definition of the limit

Answer 3

how do u get the limit from right n left???

Answer 4

a limit is basically a tangent point when two point meet

Answer 5

left limit is where the function is coming from the left
right limit is when the function is coming from the right

Answer 6

ill give you an example

Answer 7

so let say the limit is approaching 2....i have to substitute -2 for the left side n 2 for the right side??

Answer 8

I'm just here because a lot of people showed up

Answer 9

no reply from EvrydayAzn??

Answer 10

hold up it takes a long time to type

Answer 11

yes it does

Answer 12

Graph it then check the points and see if there is any breaks o.O

Answer 13

lets say their is a liner function 2x-5 and you are trying to find the limit as it approches 0

Answer 14

lim f(x) = 2x-5
x->0(-) (from the left side)
lim=-5

lim f(x) = 2x-5
x->0(+) (from the right side)
lim= -5

they both share the same limit which means that the limit exist and thus, the function is continuous

Answer 15

let say they give you 1/x-2 and the limit approaches 2....how do u show it??