Dependent and Independent Variables
Variables are further distinguished as being either a dependent variable or an independent variable. Independent variables are regarded as inputs to a system and may take on different values freely. Dependent variables are those values that change as a consequence of changes in other values in the system.
When one value is completely determined by another or several others, then it is called a function of the other value or values. In this case the value of the function is a dependent variable and the other values are independent variables. The notation f(x) is used for the value of the function f with x representing the independent variable. Similarly, notation such as f(x, y, z) may be used when there are several independent variables that are not the same.
Read more about this topic: Variable (mathematics)
Famous quotes containing the words dependent, independent and/or variables:
“It is vain to expect virtue from women till they are, in some degree, independent of men ... Whilst they are absolutely dependent on their husbands they will be cunning, mean, and selfish, and the men who can be gratified by the fawning fondness of spaniel-like affection, have not much delicacy, for love is not to be bought, in any sense of the words, its silken wings are instantly shrivelled up when any thing beside a return in kind is sought.”
—Mary Wollstonecraft (1759–1797)
“Labor is prior to, and independent of, capital. Capital is only the fruit of labor, and could never have existed if labor had not first existed. Labor is the superior of capital, and deserves much the higher consideration.”
—Abraham Lincoln (1809–1865)
“The variables are surprisingly few.... One can whip or be whipped; one can eat excrement or quaff urine; mouth and private part can be meet in this or that commerce. After which there is the gray of morning and the sour knowledge that things have remained fairly generally the same since man first met goat and woman.”
—George Steiner (b. 1929)