Question

give the example of the following functions

1.)sum
2.) power​

Answer 1

1. Select a cell next to the numbers you want to sum, click AutoSum on the Home tab, press Enter, and you're done. When you click AutoSum, Excel automatically enters a formula (that uses the SUM function) to sum the numbers. Here's an example.
2. A power function is one of the form Y=X^N where N is any real number constant. A lot of our parent functions are actually power functions, for example, Y=X. ... N=3, also a power function. Y=1/X is a power function.

Answer 2

The Microsoft Excel SUM function adds all numbers in a range of cells and returns the result. The SUM function is a built-in function in Excel that is categorized as a Math/Trig Function.  As a worksheet function, the SUM function can be entered as part of a formula in a cell of a worksheet.

A power function is a function that can be represented in the form

f(x)=kxp(3.4.3)

where  k  and  p  are real numbers, and  k  is known as the coefficient.