Document
... Agreement on Domain The domain of a relation is assumed to be all real numbers that produce real numbers when substituted for the independent variable. ...
... Agreement on Domain The domain of a relation is assumed to be all real numbers that produce real numbers when substituted for the independent variable. ...
What is a Function?
... You can pass zero or several input values You can pass values of different types Each parameter has name Parameters are assigned to particular values when the function is called ...
... You can pass zero or several input values You can pass values of different types Each parameter has name Parameters are assigned to particular values when the function is called ...
Linear Functions
... Consider the following two points (2, 4) and (5, 10). We can find the slope of the line between these two points as follows. We let x1 = 2, x2 = 5, y1 = 4, and y2 = 10 a = slope = ...
... Consider the following two points (2, 4) and (5, 10). We can find the slope of the line between these two points as follows. We let x1 = 2, x2 = 5, y1 = 4, and y2 = 10 a = slope = ...
Function of several real variables
In mathematical analysis, and applications in geometry, applied mathematics, engineering, natural sciences, and economics, a function of several real variables or real multivariate function is a function with more than one argument, with all arguments being real variables. This concept extends the idea of a function of a real variable to several variables. The ""input"" variables take real values, while the ""output"", also called the ""value of the function"", may be real or complex. However, the study of the complex valued functions may be easily reduced to the study of the real valued functions, by considering the real and imaginary parts of the complex function; therefore, unless explicitly specified, only real valued functions will be considered in this article.The domain of a function of several variables is the subset of ℝn for which the function is defined. As usual, the domain of a function of several real variables is supposed to contain an open subset of ℝn.