posted by Anonymous .
What is the ANSWER??
If /x/ = -x, then x mst be
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~ :)
|x| = x if x >= 0
|x| = -x if x < 0
It happens that -0 = 0, but the definition of |x| specifies that |x|=x if x>=0