The function is actually a relation between variables in which the one variable is dependent on the other variable.
What is a function?
A function is defined as the relationship between variables in which the alteration of one variable affects the other variable.
Suppose we are having a function:-
[tex]F(x)=2x^2-1[/tex]
In the above function f(x) is an independent variable and the 2x^2-1 is a dependent variable so for the different values of x the value of the dependent function varies.
Hence the function is actually a relation between variables in which the one variable is dependent on the other variable.
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