# Please help me get 2% by helping me solve this question (Very Important)

This is an advance function question that our teacher gave us as a bonus question. Right now my percentage is around 79 and if i get this question right i can get at least 83 in my final mark. So it will be very very very appreciated if someone can help me solve this question ASAP, i only have 2 days left to hand it in. Here is the exact format of the question:

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Q: We define a function first:

[X]up = the smallest integer
bigger than X.

[[ so, for example, [-2]up = -1

[-1.4]up = -1 , [-1]up = 0

[0.4]up=1 , [17]up =18

etc. ]]

Here is a relation:

n[X]up = [nX]up

Find the domain of this relation for n and the domain for X. You must Prove your answer

((Just to give another question, as an example, if the relation were:
X2+n2 =4, the domain for X is -2 < X < 2
the domain for n is -2 < n < 2

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## Answers and Replies

HallsofIvy
Homework Helper
I find it difficult to believe that your teacher said, "This is a bonus question. Go find someone to tell you the answer and I will give you an additional 4 points."

Wouldn't it be better (and more honest) to at least try to do the problem yourself?

Interesting problem. Is n an integer?

c'mmon help me out people, i have to hand it in tomorrow!

I find it difficult to believe that your teacher said, "This is a bonus question. Go find someone to tell you the answer and I will give you an additional 4 points."

Wouldn't it be better (and more honest) to at least try to do the problem yourself?

if you can't solve don't bother commenting plz.

Mark44
Mentor
It's a general policy in this forum that we don't do your work for you. If you want help, you have to show that you have made an effort on your own.

It's a general policy in this forum that we don't do your work for you. If you want help, you have to show that you have made an effort on your own.
i said help me solve the question not asking for you to solve. I just need guidance on where to to start and so on and making the question bit clearer.

Mark44
Mentor
OK, here's a start. The relation is n[X]up = [nX]up.

Put some numbers in for n and see what you can conclude from each one as far as the values for x. Describe in words the values of x that can be used on each side separately.

1. 2[x]up = [2x]up
2. -3[x]up = [-3x]up
3. .5[x]up = [.5x]up

OK, here's a start. The relation is n[X]up = [nX]up.

Put some numbers in for n and see what you can conclude from each one as far as the values for x. Describe in words the values of x that can be used on each side separately.

1. 2[x]up = [2x]up
2. -3[x]up = [-3x]up
3. .5[x]up = [.5x]up

ok thanks i guess, though it wasn't that helpful. Anyway lets see what i can come up with.