• A = {x :| x |} .Write A in the set builder form
• A = {x : x| x| = −1 in the roster form
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A=Ф
There is no number whose absolute value is a negative number.
There is no number whose absolute value is a negative number.
Revolution:
pls clear the answer
The answer is given such that a number x whose absolute integral value is -1. It cannot be -ve, so it's a null set.If it was +ve,then the solution set was :{1,-1}n(A)=2
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