How to print out line equations? (such as y=x^2)

[Gary King]

If I have several graph equations like the following:

y = x
y = |x|
y = x^2
y = x^3
y = 2^x

How can I print these out when they are laid out on a graph? What program should I use?

Thanks in advance! :)

[chroot]

You can use Excel, or gnuplot, or any of the other ten million graphing utilities available on the web. Use google.

- Warren

[Gary King]

Could you show me a screenshot of how it would look (the values and the graph) completed for y = x in Excel?

the attached is what I have so far: http://img139.exs.cx/img139/9320/excel7rr.jpg

[chroot]

Put a range of x-values in column A, say rows 1 through 20. Insert x-values ranging from say -10 to 10.

Type "=ABS($A1)" into cell B1. Drag a box around cells B1 through B20, and hit Edit->Fill->Down.

Type "=$A1^2" into cell C1. Drag a box around cells C1 through C20, and hit Edit->Fill->Down.

...Continue adding all the columns you need.

Select all the columns, and hit the Chart button. Create the chart as usual.

- Warren

[chroot]

Hint: Use an x-y scatter chart, not a plain line chart.

- Warren

[Gary King]

here we go: http://img155.exs.cx/img155/1012/excel4ke.jpg looks good so far :) thanks!

P.S.
ah thanks, the scatter is much better; I don't have to set the A column to be X for every chart

[jtbell]

Hint: Use an x-y scatter chart, not a plain line chart.

And if you're plotting points generated from an equation, not experimental data points, choose the sub-type of scatter chart that gives you "data points connected by smoothed lines without markers".