Using the given definitions, you'll obtain
For example:
(try the rest).
For a set of Y real numbers define a function C_{Y} by;
C_{Y}(x)= {1 if x ∈Y,
0 if x is not ∈ Y.
Let Y and Z be a set of real numbers, find expressions for C_{YUZ} and C_{ynz}
YUZ={x∈R|x∈Y or x∈Z}
ynz={x∈R|x∈Y and x∈Z}
so i know what C_{y} is but I'm unsure of what C_{z} is and what I am suppose to do. Help would be greatly appreciated.