Chapter 1 - Numbers
Page 9 of 14
|Numbers - Absolute Value - Contents|
The absolute value of a real number is the positive value of the number. If it is a negative number, then the negative sign is removed. Multiplying the negative number by negative one performs this math operation. If the number is positive, then it remains a positive number. If the number is zero, then it remains zero. Measurements use the absolute value because a length is always positive. The absolute value can also mathematically define a set of answers to a function. For instance, taking the square root of a number that is first squared results in the absolute value of the number, because the results are always the positive value.
|Numbers - Absolute Value - Examples|
|-3.5| = 3.5, the absolute value of negative three point five is three point five.
|2.5| = 2.5, the absolute value of two point five is two point five.
|-3.33333 . . .| = 3.33333 . . ., the absolute value of negative three and a third is three and a third.
|-pi| = pi, the absolute value of negative pi is pi.
|Numbers - Sections - Chapters|
|1 - Natural Numbers||2 - Zero||3 - Negative Numbers|
|4 - Integers||5 -Rational Numbers||6 - Common Fractions|
|7 - Decimal Fractions||8 - Irrational Numbers||9 - Absolute Value|
|10 - Infinity||11 - Special Numbers||12 - Prime Numbers|
|13 - Imaginary Numbers||14 - Systems of Numeration|
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