Math Question
posted by Suzannah .
What does "c ≠ 0" mean? I've heard the "≠" sign means "does not equal." Does this mean that c ≠ 0 means that "(variable) does not equal zero"? What is it's usage?

Math Question 
Reiny
yes, it means "not equal"
suppose you had
y = 4/(x5) and you wanted the domain of the function
that is, what values of x could I use ??
Well, we could use any real number for x, except 5
and we would write it as:
x = any real number, x ≠ 5
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