itseisarvoon
Itseisarvo, often denoted by vertical bars, is a fundamental concept in mathematics that represents the distance of a number from zero on the number line. For any real number x, its absolute value, written as |x|, is always non-negative. If x is a positive number or zero, its absolute value is simply x itself. If x is a negative number, its absolute value is its opposite, which is a positive number. For example, the absolute value of 5 is 5, and the absolute value of -5 is also 5.
The definition can be formally expressed as a piecewise function:
This concept extends beyond real numbers to complex numbers as well. For a complex number z = a
Absolute value has several important properties. It is always non-negative, as mentioned, and the absolute value