13-6-13

Using the Action Menu

usumSeq

Function: Determines the lowest-degree polynomial that generates the sum of the first n terms of your sequence. If we evaluate the resulting polynomial at 1, for example, the result will be the first value in your list. If we evaluate the resulting polynomial at 2, the result will be the sum of the first two values in your list.

When two columns of values or two lists are specified, the resulting polynomial returns a sum based on a sequence.

Syntax: sumSeq(start cell:end cell[,start cell:end cell][,variable])

Example: To determine a polynomial that generates the sum of the first n terms for the sequence expressed by the values in cells B1 through B4 with a variable of “y”, and input the result in cell A1:

• “x” is the default variable when you do not specify one above.

20050501