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April 2020

Function of several real variables
function of several real variables or real multivariate function is a function with more than one argument, with all arguments being real variables.
Function of a real variable
sciences, a function of a real variable is a function whose domain is the real numbers ℝ, or a subset of ℝ that contains an interval of positive length
Several complex variables
The theory of functions of several complex variables is the branch of mathematics dealing with complex valued functions f ( z 1 , z 2 , … , z n ) {\displaystyle
Real-valued function
Real-valued functions of a real variable (commonly called real functions) and real-valued functions of several real variables are the main object of study
Function (mathematics)
equal to the set R {\displaystyle \mathbb {R} } of real numbers, one has a function of several real variables. If the X i {\displaystyle X_{i}} are equal
Stationary point
point where the function "stops" increasing or decreasing (hence the name). For a differentiable function of several real variables, a stationary point
Critical point (mathematics)
the function's domain where it is either not holomorphic or the derivative is equal to zero. Likewise, for a function of several real variables, a critical
Analytic function
analytic function is a function that is locally given by a convergent power series. There exist both real analytic functions and complex analytic functions, categories
Differentiable function
In calculus (a branch of mathematics), a differentiable function of one real variable is a function whose derivative exists at each point in its domain
independent variable. Derivatives may be generalized to functions of several real variables. In this generalization, the derivative is reinterpreted