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August 2, 2015

Homework Help: Math 111

Posted by Joey on Thursday, September 29, 2011 at 11:33pm.

This is a question that deals specifically with WebWork.

Here is the question:
Write the set of points from -2 to 4 but excluding -1 and 4 as a union of intervals

my solution to this would be: [-2,4]U(-1,4)
my reasoning:
The first set includes -2 and goes up to and includes 4, the second includes everything greater than -1 and goes to everything less than 4. This way, the integer -2 is still included. BUT, this is wrong.

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