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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Specialist Mathematics => Topic started by: Sam_95 on March 03, 2012, 11:16:45 pm

Title: Drawing trig graphs on the Casio ClassPad 330 to 'Exact Values'
Post by: Sam_95 on March 03, 2012, 11:16:45 pm: Wondering how one goes about doing this. When I try to draw cos, sin and tan graphs on the calculator and try to find x values to just gives me numbers like 1.53242342332 etc etc.

Does anyone know how to get this to exact radians/degrees quickly?
Title: Re: Drawing trig graphs on the Casio ClassPad 330 to 'Exact Values'
Post by: amilss on March 04, 2012, 01:45:46 am: I have a ti cas cx, and for mine you have to change the settings for it to be in radian or degree mode, im pretty sure it can only be in one mode at a time, meaning all answers are given in that format independent of the question

So i'd assume you would have to either set it to degree or radian mode on your calc too
Title: Re: Drawing trig graphs on the Casio ClassPad 330 to 'Exact Values'
Post by: Hutchoo on March 04, 2012, 02:06:05 am: I'm also interested >->.
Title: Re: Drawing trig graphs on the Casio ClassPad 330 to 'Exact Values'
Post by: Sam_95 on March 04, 2012, 11:53:07 am: No matter whether its in RAD or DEG, it still doesn't give me exact values. Anyone have any clue?
Title: Re: Drawing trig graphs on the Casio ClassPad 330 to 'Exact Values'
Post by: Bhootnike on March 04, 2012, 05:10:03 pm: I tried to find a way to do it but i cant seem to find a way..!
do you know how to figure it out by hand ?
Title: Re: Drawing trig graphs on the Casio ClassPad 330 to 'Exact Values'
Post by: rife168 on March 04, 2012, 06:43:16 pm: Hmm.. I'm not sure how to either..

If you cannot do it quickly by hand, then you can always use the solve function in 'main' and you can restrict the domain such that it is written like this:
$solve(2sin\left(3x-\frac{\pi}{4}\right)+1=\frac{1}{2}|0\le x\le \frac{\pi}{2})$
the $|,\le$ symbols are found in the OPTN tab down the bottom of mth or 2D

edit: that looks more complicated than it really is.. don't worry though, I just wanted to use an example that showed multiple translations and whatnot
Title: Re: Drawing trig graphs on the Casio ClassPad 330 to 'Exact Values'
Post by: royoneill on June 12, 2020, 09:48:14 am: I put exactly what you said into main and solved under a restricted domain and still got a decimal answer :(