My Math Forum How to enter sin^2x into a calculator to graph?

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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 TI-89.
 October 13th, 2007, 06:57 PM #6 Joined: Apr 2007 Posts: 2,141 Thanks: 0 How much does a TI-89 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 TI-89 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 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?
 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 TI-84 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 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?
 October 13th, 2007, 08:03 PM #12 Joined: Sep 2007 Posts: 7 Thanks: 0 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.
 October 13th, 2007, 08:23 PM #13 Joined: Sep 2007 Posts: 197 Thanks: 0 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.
October 14th, 2007, 06:11 AM   #14

Joined: Dec 2006

Posts: 1,111
Thanks: 0

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.

 Tags calculator, enter, graph, sin2x

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