Excel does not directly plot functions, instead it plots data points
consisting of x-y pairs. Put x values in one column and calculate the
relevant y-values in the next column. The plot as an "XY (Scatter)"
plot, selecting the subtype that connects points with smoothed lines.

Alternately, Tushar Mehta has written an add-in that automates this process
http://www.tushar-mehta.com/excel/so...ger/index.html

Jerry

Mahrokh wrote:

I mean we have to insert the numbers to see the charts or can I draw my
equation's graph in general?
Thanks,