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# Urgent help!, exam tomorrow! Simple question watch

1. Hi everyone!

Basically i have an exam tomorrow and there's a question from a past paper that i dont fully understand.
I've uploaded a pic of the question.

Its part b, i.e. determine the range ...... etc

I dont understand the reasoning behind it.

plz help!

2. (Original post by mabz123)
Hi everyone!

Basically i have an exam tomorrow and there's a question from a past paper that i dont fully understand.
I've uploaded a pic of the question.

Its part b, i.e. determine the range ...... etc

I dont understand the reasoning behind it.

plz help!

If it helps, this is the graph of that equation:

3. BUMP!
4. anyone?
5. (Original post by mabz123)
anyone?
It means x is greater than or equal -1 and less than -0.5.

You've got to understand, -1 is smaller than -0.5. Hope it helps.
6. (Original post by Perlin)
It means x is greater than or equal -1 and less than -0.5.

You've got to understand, -1 is smaller than -0.5. Hope it helps.
no i understand that.
But my query is that, if you put 1.5 into that equation, then both the left hand side and right hand side are equal, but 1.5 is out of the range of
-1> x> -0.5

this question has to do with ceiling and floor

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Updated: January 23, 2014
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