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|x| or abs(x) depending on what you are asking about.
52. The absolute value is the nonnegative value of a number. Enclosing vertical bars ( | | ) are the absolute value operator. Using that notation we can state that |a| = a, and |-a| = a. You can also note that |a| (whether a is negative or positive) equals the square root of a squared.
Jean-Robert Argand came up with the idea of absolute value, although he specifically meant complex absolute value. On the other hand Karl Weierstrass came up with the notation | x |.
8.74x10-2 so 2.
The absolute value is greater than or equal to 1.