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Graphs of quadratic, cubic curves et all: can the be done?

 
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Rosanella
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PostPosted: Wed Aug 26, 2009 3:52 am    Post subject: Graphs of quadratic, cubic curves et all: can the be done? Reply with quote

I need to create some graphs charts of quadratic or cubic curves, given a formula , let's say y=ax^2+bx+c or that of a straight line , y=mx+c.

Can they be done with Calc?

Thank you
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David
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PostPosted: Wed Aug 26, 2009 4:28 am    Post subject: Reply with quote

No. If using Windows, get either Graphmatica or "Graph", the latter from www.padowan.dk . If using iMac, a good graphing program comes bundled with it.

David.
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Rosanella
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PostPosted: Wed Aug 26, 2009 6:20 am    Post subject: Reply with quote

David wrote:
No. If using Windows, get either Graphmatica or "Graph", the latter from www.padowan.dk . If using iMac, a good graphing program comes bundled with it.

David.


That's great!
Thank you Smile
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ftack
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PostPosted: Wed Aug 26, 2009 6:41 am    Post subject: Reply with quote

In Calc, you could do this when you first calculate the data points. Use autofill to fill a series of data, then calculate the Y-value, then create the plot.
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jrkrideau
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PostPosted: Wed Aug 26, 2009 10:11 am    Post subject: Re: Graphs of quadratic, cubic curves et all: can the be don Reply with quote

Rosanella wrote:
I need to create some graphs charts of quadratic or cubic curves, given a formula , let's say y=ax^2+bx+c or that of a straight line , y=mx+c.

Can they be done with Calc?

Thank you


Not easily. If you need publication quality graphics you may want to check out R http://www.r-project.org/ or gnuplot http://www.gnuplot.info/ . However for strictly graphing mathematics I think David's suggestions are much better.
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Rosanella
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PostPosted: Wed Aug 26, 2009 1:53 pm    Post subject: Re: Graphs of quadratic, cubic curves et all: can the be don Reply with quote

jrkrideau wrote:
Rosanella wrote:
I need to create some graphs charts of quadratic or cubic curves, given a formula , let's say y=ax^2+bx+c or that of a straight line , y=mx+c.

Can they be done with Calc?

Thank you


Not easily. If you need publication quality graphics you may want to check out R http://www.r-project.org/ or gnuplot http://www.gnuplot.info/ . However for strictly graphing mathematics I think David's suggestions are much better.


I need to create quadratic curves and curves examples as teaching aids for A level Maths.
Graph from www.padowan.dk is what I was looking for.
Thank you all for your suggestions. That was great!
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Rosanella
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