Functions are expressions, rules, or laws that specify the relationship between an independent variable and a dependent variable
Given,
A function;
An expression, rule, or regulation that establishes the connection between an independent variable and a dependent variable is known as a function (the dependent variable).
A function called f is defined by the notation y=f(x). This should be understood as "y is a function of x." The input value, or independent variable, is represented by the letter x. The output value, also known as the dependent variable, is denoted by the letter y, or f(x).
Examples for function are;
- f(x) = sin x,
- f(x) = x2 + 3,
- f(x) = 1/x,
- f(x) = 2x + 3, etc.
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