Answer:
First, the absolute value is a function that always has a positive output.
We can write the absolute value function as:
IxI = x if x > 0 (x is positive)
IxI = - x if x < 0. (x is negative)
But what happens if x = 0?
this is because 0 is equal to +0 and -0, then we have that:
I0I = 0 = +0 = -0.
So we can actually write the absolute value function as:
IxI = x if x ≥ 0 (x is positive)
IxI = - x if x ≤ 0. (x is negative)
