Functions are an integral part of mathematics, and most students learn them from Algebra II and up. A real life example of a function would be the relation between the height of a ball and how long it has been in the air.
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There are infinitely many operations. Any rule that takes one or more real numbers as input and outputs one or more real numbers is an operation involving real numbers. So addition, subtraction, multiplication, division, squaring, doubling, cube-rooting, trigonometric functions, multiplying a real vector by a matrix of the appropriate size, are all examples.
If you are asking about periodic function in the real world, than there are millions of examples. The first one that comes to mind are the sin and cos functions. These are used in almost every field of science.
real situation example for x=14>17
a function whose range is in the real number
a) Define the concept of culture. Also describe the national cultural variables and individual cultural variables with examples.