Real valued functions and their graph

REAL VALUED FUNCTIONS

In mathematics, a real-valued function is a  function whose values are real numbers. In other words, it is a function that assigns a real number to each member of its domain

 GRAPH OF SOME REAL VALUED                    FUNCTIONS

Domain and Range of all the abovereal valued functions are real number

1      Constant function-domain is real numbers range is c

2      Identity function-domain is real numbers and range is also same

3      Squaring function-domain is real numbers and range is positive real numbers

4      Cubic function-domain is real numbers and range is also real numbers

    Floor function or Smallest integer    function(Step function)

 Domain is Real numbers and Range is also same 

Ceiling function or Greatest integer        function(Step function)

  Domain is Real numbers and Range is also same

                                                                                                                     Nitesh