Math
posted by Anonymous .
What is the ANSWER??
If /x/ = x, then x mst be
A. Positive
B. Nonnegative
C. Negative
D. Nonpositive

Note that is only possible if x is any real number less than or equal to zero:
x <= 0
Therefore, the answer is [D] Nonpositive.
Note nonpositive is different from negative numbers, as nonpositive includes zero, while Negative numbers does not include zero. (Zero is neither positive or negative number)
Hope this helps~ :) 
Not quite.
x = x if x >= 0
x = x if x < 0
(C)
It happens that 0 = 0, but the definition of x specifies that x=x if x>=0
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