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1. boognapper

I think its -2,3

2. mailtoarko

4

3. boognapper

@mailtoarko try one more ... and how to do it ?

4. boognapper

@mailtoarko how do you explain for doing a question like this next one?

5. mailtoarko

well i myself saw such question for the 1st time . so here's my explanation for the next ans. you see x -> 3- i.e less than 3 .but at 3 we have a point and a graph which has values for x>3 but less than 3 we have no value for fx so limit doesn;t exist i think

6. boognapper

what is the 3"-" for (what is the negative symbol mean

7. amir.sat

it means u should get the left limit for that

8. amir.sat

and if it's + u should get the right limit

9. mailtoarko

he's right it means the left limit

10. boognapper

so is the answer how @mailtoarko explained it ? is that the answer @amir.sat

11. mailtoarko

first let me know whether the ans is correct

12. boognapper

13. mailtoarko

@amir.sat frnd wat do u think wat will be the answer of this question

14. amir.sat

for the first one if u approach the x=2 from right the y will approach 4

15. amir.sat

and for the second one if u approach the x=3 from left the y will approach -1

16. boognapper

@amir.sat is that the limit does not exist the right answer for the second one?

17. amir.sat

not when say limit there nothing to do with the point (at x= whatever the limit says)

18. amir.sat

u just wanna know if x approach to a value what will y approach to

19. boognapper

So the correct answer for this one is if you approach at 3 the answer is -1

20. boognapper

right?

21. amir.sat

no if u approach 3 from left just left the answer is -1 for right it's -4 but again as the question want the left limit the answer is -1 but remember if the question just said limit at x =3 it doesn't have any limit imean if doesn't mentioned left or right

22. amir.sat

do u know when a function have limit at a point?

23. amir.sat

a function has limit at a point just when its left and right limit are the same

24. amir.sat

ok it said lim f(x) x->3^- the - in power means get the left limit so as u see it has left limit and it's -1

25. amir.sat

in that case u shouldn't notice at the right limit

26. amir.sat

u understand me?

27. boognapper

Not fully Im not sure what you saying the answer should be @amir.sat

28. amir.sat

why u say i'm wrong ?tell maybe i can help u

29. boognapper

No I just want to know the answer .. whats the answer lol ? @amir.sat

30. boognapper

what is the limit to this equation if it exists

31. amir.sat

read this and the simple example in it i think the third and the fourth one http://www.millersville.edu/~bikenaga/calculus/limlr/limlr.html

32. amir.sat

first one b)4 second one -1

33. amir.sat

but i suggest u to read that article

34. boognapper

@mailtoarko what do you say?

35. mailtoarko

as i said i didn't have the exact knowledge of solving this question . so i do agree with the logic of amir.sat