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| a positive number that is equal to the sum of all positive integers that are submultiples of it, as 6, which is equal to the sum of 1, 2, and 3 |
| a rational number or the limit of a sequence of rational numbers, as opposed to a complex number |
| independent variable | |
| —n | |
| 1. | Also called: argument a variable in a mathematical equation or statement whose value determines that of the dependent variable: in y = f(x), x is the independent variable |
| 2. | statistics See also experimental condition Also called: predictor the variable which an experimenter deliberately manipulates in order to observe its relationship with some other quantity, or which defines the distinct conditions in an experiment |
| independent variable (ĭn'dĭ-pěn'dənt) Pronunciation Key
In mathematics, a variable whose value determines the value of other variables. For example, in the formula for the area of a circle, A = πr2, r is the independent variable, as its value determines the value of the area (A). Compare dependent variable. |