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The second one
that's the figure I posted the questions before posting the figure
How do I solve it?
yes the second one
what do you mean by second one? i am sorry, I did not get it
I am not getting why u guys are saying, "thesecond one"
The places where the function does crazy things like not having a value (indicated by an empty circle), or suddenly jumps from one y-value to another are called discontinuities (because of them you can't draw the function in a nice line without pen leaving paper). Because they are slightly awry, these places don't have limits, as when x approaches them the function doe *not* settle down to a nice value (which is what the limit is, it asks: 'as x gets close to a, does y get closer to ONE value in particular?'- the limit's value is actually this settling down value, call it b).
(1) is incorrect, as the function is nice at x=2 (3) is correct, same reason 4 and 5 are obviously incorrect
Although I say that, I'm not sure about 3 as it may not have a limit approaching it from both sides, so 3 is probably incorrect
oh okay< and what about the 2nd one?
It's the opposite of (1)
it means when x goes to 2 , y =s 2?
Yes. I'm not sure whether it matters that there is no line right of that.
okay, just for clarification. f(x) means y right?
okay, thank you so much.