Function

Hai guys here comes the clear cut definition of function.

Consider the equation y = x – 3.

Here ‘x’ is called an independent variable (or input) and ‘y’ is called dependent variable ( or output).

The value of ‘y’ depends upon the the value of ‘x’

The word depends upon mathematically called FUNCTION.

Symbolically y = f(x) , the value of f at ‘x’

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