The modulus of a number x is a value equal to -x if x
< 0 and equal to x if x >= 0.
We have to
solve |x-1| = |x| +1
|x-1| = |x|
+1
If x - 1 > 0 => x > 1 or x >
0
=> x - 1 = x +
1,
=> -1 = 1, not
possible
If x - 1 =< 0 , x can be greater than or
equal to 0 or less than 0
=> 1 - x = x + 1 =>
x = 0
1 - x = -x + 1 => 1 = 1, always true. The
given equation is true for all values of
x<0
The required solution of the
equation is [-inf. , 0]
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