I haven't done mathematics in a while and I have this question to do.(adsbygoogle = window.adsbygoogle || []).push({});

Describe the following subests of the plane:

a. R x {1,2,4}

b. ([0,1] U [2,3]) x[0,1]

c. ([0,1] U [2,3]) x ([0,1]x[2,3])

2. I'm actually unsure of the relevant equations used for this sort of problem.

3. Basically I think the first one is the lines x=1, x=2, x=4, y=1, y=2, and y=4.

But in the back of my mind I think it's either only the y or the x equations. If someone could help me visualize this properly I think this problem would be much easier. Thanks.

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# Homework Help: Simple notation question

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