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Rosanella General User
Joined: 14 Dec 2007 Posts: 34 Location: London (UK)

Posted: Wed Aug 26, 2009 3:52 am Post subject: Graphs of quadratic, cubic curves et all: can the be done? 


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 _________________
Rosanella
If we do not try, we will not know. (Ayya Khema) 

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David Super User
Joined: 24 Oct 2003 Posts: 5668 Location: Canada

Posted: Wed Aug 26, 2009 4:28 am Post subject: 


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 General User
Joined: 14 Dec 2007 Posts: 34 Location: London (UK)

Posted: Wed Aug 26, 2009 6:20 am Post subject: 


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 _________________
Rosanella
If we do not try, we will not know. (Ayya Khema) 

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ftack Moderator
Joined: 27 Jan 2003 Posts: 3102 Location: Belgium

Posted: Wed Aug 26, 2009 6:41 am Post subject: 


In Calc, you could do this when you first calculate the data points. Use autofill to fill a series of data, then calculate the Yvalue, then create the plot. _________________ 
GNU/Linux (Ubuntu) 

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jrkrideau Super User
Joined: 08 Aug 2005 Posts: 6732 Location: Kingston ON Canada

Posted: Wed Aug 26, 2009 10:11 am Post subject: Re: Graphs of quadratic, cubic curves et all: can the be don 


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.rproject.org/ or gnuplot http://www.gnuplot.info/ . However for strictly graphing mathematics I think David's suggestions are much better. _________________ jrkrideau
Kingston ON Canada
Currently using Windows 7 & OOo 3.4.0 and Ubuntu 12.04 & LibreOffice 3.5.2.2 

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Rosanella General User
Joined: 14 Dec 2007 Posts: 34 Location: London (UK)

Posted: Wed Aug 26, 2009 1:53 pm Post subject: Re: Graphs of quadratic, cubic curves et all: can the be don 


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.rproject.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! _________________
Rosanella
If we do not try, we will not know. (Ayya Khema) 

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