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October 13th, 2007, 04:26 PM  #1 
Joined: Sep 2007 Posts: 7 Thanks: 0  How to enter sin^2x into a calculator to graph?
Can someone explain to me how to enter something like sin²x into a calculator? I had read on a google search that you would do (sin(x))^2 but I am not quite sure. Thanks 
October 13th, 2007, 06:09 PM  #2 
Joined: Sep 2007 Posts: 197 Thanks: 0 
that's correct, sin(x)^2=(sin(x))^2, if you are using a graphing calculator. On most scientific calculators, you enter x first, push the sin button, then hit the squared button.

October 13th, 2007, 06:34 PM  #3 
Joined: Sep 2007 Posts: 7 Thanks: 0 
great, thanks a lot, it's a graphing calc. I just wanted to make sure that I was getting correct results back.

October 13th, 2007, 06:54 PM  #4 
Joined: Apr 2007 Posts: 2,141 Thanks: 0 
Are you using Texas Instruments graphing calculator?

October 13th, 2007, 06:55 PM  #5 
Joined: Sep 2007 Posts: 197 Thanks: 0 
I personally have a TI89.

October 13th, 2007, 06:57 PM  #6 
Joined: Apr 2007 Posts: 2,141 Thanks: 0 
How much does a TI89 cost in U.S. dollars? I'm thinking about buying one, but I don't know yet.

October 13th, 2007, 07:03 PM  #7 
Joined: Nov 2006 From: I'm a figment of my own imagination :? Posts: 848 Thanks: 0 
Amazon.com sells a TI89 Titanium for about $200, although I don't know how representative this is.

October 13th, 2007, 07:06 PM  #8 
Joined: Apr 2007 Posts: 2,141 Thanks: 0 
$200 for an graphing calculator.. that's very expensive, comparing to TI84's price. I have an question  is there an graphing calculator, which the screen has the color version (like, a computer screen would), instead of black and white version? Did any company created this technology yet? 
October 13th, 2007, 07:11 PM  #9 
Joined: Dec 2006 Posts: 1,111 Thanks: 0 
Why would you want a color screen?

October 13th, 2007, 07:13 PM  #10 
Joined: Apr 2007 Posts: 2,141 Thanks: 0 
Well, in my opinion, if an graphing calculator has an colored screen (like an TV, or computers have), then it would look cool, comparing to the black and white screen that TI84 has.

October 13th, 2007, 07:18 PM  #11 
Joined: Nov 2006 From: I'm a figment of my own imagination :? Posts: 848 Thanks: 0 
If a calculator had a color screen, it would almost certainly be more expensive than an otherwise comparable calculator with a blackandwhite screen. Why do you ask for a feature that would raise the price, while in the same breath complaining about a calculator with other added features being expensive?

October 13th, 2007, 08:03 PM  #12 
Joined: Sep 2007 Posts: 7 Thanks: 0 
I actually have 2 calculators. One is an old TI83 since things like TI89 are banned in Trig, but starting in Calculus they are allowed. My TI83 I bought off craiglist for $20. My TI89 is a titanium, and I got it for about $160 at Best Buy. I bought the 89 by mistake, but figured since I will need it in the future I did not return it. It's a really nice calculator. 
October 13th, 2007, 08:23 PM  #13 
Joined: Sep 2007 Posts: 197 Thanks: 0 
I have the TI89 previous to the titanium, using OS version 2.09. I already have a color graphing program called Derive 6. Unfortunately, TI has stopped the Derive line and don't support it anymore.

October 14th, 2007, 06:11 AM  #14  
Joined: Dec 2006 Posts: 1,111 Thanks: 0  Quote:
"Yeah, I went out to buy a Ford sedan, but I accidentally bought a Porsche instead. I thought it might come in handy later on, though, so I kept it." Or something like that.  

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calculator, enter, graph, sin2x 
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