## Can a function have 3 variables?

Three-Variable Calculus considers functions of three real variables. A function f of three real variables assigns a real number f(x, y, z) to each set of real numbers (x, y, z) in the domain of the function. The domain of a function of three variables is a subset of coordinate 3-space { (x,y,z) | x, y, z ∈ {R} }.

**What do you mean by function of several variables?**

A function of variables, also called a function of several variables, with domain is a relation that assigns to every ordered -tuple in a unique real number in . We denote this by each of the following types of notation. The range of is the set of all outputs of . It is a subset of , not .

**What are math variables?**

variable, In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation. Commonly used variables include x and y (real-number unknowns), z (complex-number unknowns), t (time), r (radius), and s (arc length).

### What is a multivariable equation?

Multivariable linear equations are equations that have two or more unknowns (generally represented by ‘x’ and ‘y’). There are multiple ways that you can solve these equations, including elimination and substitution.

**What is a variable function?**

Definition: A function is a mathematical relationship in which the values of a single dependent variable are determined by the values of one or more independent variables. Function means the dependent variable is determined by the independent variable(s).

**How do you solve a variable in math?**

If the equation is in the form, ax + b = c, where x is the variable, you can solve the equation as before. First “undo” the addition and subtraction, and then “undo” the multiplication and division. Solve 3y + 2 = 11. Subtract 2 from both sides of the equation to get the term with the variable by itself.

#### What are variables in mathematics?

**What are variables in maths?**