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October 13th, 2007, 04:26 PM   #1
 
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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
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October 13th, 2007, 06:09 PM   #2
 
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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.
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October 13th, 2007, 06:34 PM   #3
 
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great, thanks a lot, it's a graphing calc. I just wanted to make sure that I was getting correct results back.
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October 13th, 2007, 06:54 PM   #4
 
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Are you using Texas Instruments graphing calculator?
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October 13th, 2007, 06:55 PM   #5
 
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I personally have a TI-89.
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October 13th, 2007, 06:57 PM   #6
 
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How much does a TI-89 cost in U.S. dollars? I'm thinking about buying one, but I don't know yet.
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October 13th, 2007, 07:03 PM   #7
 
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Amazon.com sells a TI-89 Titanium for about $200, although I don't know how representative this is.
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October 13th, 2007, 07:06 PM   #8
 
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$200 for an graphing calculator.. that's very expensive, comparing to TI-84'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?
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October 13th, 2007, 07:11 PM   #9
 
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Why would you want a color screen?
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October 13th, 2007, 07:13 PM   #10
 
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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 TI-84 has.
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October 13th, 2007, 07:18 PM   #11
 
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If a calculator had a color screen, it would almost certainly be more expensive than an otherwise comparable calculator with a black-and-white 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?
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October 13th, 2007, 08:03 PM   #12
 
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I actually have 2 calculators. One is an old TI-83 since things like TI-89 are banned in Trig, but starting in Calculus they are allowed.

My TI-83 I bought off craiglist for $20. My TI-89 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.
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October 13th, 2007, 08:23 PM   #13
 
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I have the TI-89 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.
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October 14th, 2007, 06:11 AM   #14
 
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Quote:
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.
Good thing it was on something as small as a calculator. Imagine if it had been something larger...

"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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