Refer to and edit list items

- [Instructor] Many of the list operations…that you perform in Mathematica…will use all the values in the list.…For example, you might search a list…for the minimum or maximum value…or find the average of all values in the list.…That said, some calculations and other operations…will work with individual values…or ranges of values within a list.…In this movie I will show you how to refer…to elements of a list.…To start I will type in a list.…So I will call it elist, equal,…you enumerate lists within curly brackets.…

So I'll type a left curly bracket…and I'll type in the first five perfect squares.…So 1, 4, 9,…16, 25.…I'll follow that with a right curly bracket…and shift enter.…If you want to refer to an individual list item…you type the name of the list variable…and then put the number…of the item to which you want to refer…in double square brackets.…So for example if I want to refer to the first number…of the elist variable…I would type elist followed by two left square brackets…and then the number one,…two right square brackets…