How do you use the Excel function trend?

Question

How do you use the Excel function trend ? How do you fill the condition?

Answer 1

I haven't used it myself, but two decent resources are:

1. A decent explanation of the parameters, with graphical example: http://office.microsoft.com/en-us/excel/HP052093201033.aspx
2. A longer explanation + example (also details changes in behavior between Excel versions, which you may or may not need to know): http://support.microsoft.com/kb/828801