This is a basic question. Distance is defined mathematically by the square root of the squared difference between a and b. Then what do the expressions a-b and Ia-bI (absolute value) mean?
This is a basic question. Distance is defined mathematically by the square root of the squared difference between a and b. Then what do the expressions a-b and Ia-bI (absolute value) mean?
The distance between two pointson a number line is .