Recent content by Shailen Sobhe

I wonder how the mouse is able to detect motion on a perfectly uniform surface. What if the mouse is moved at a very slow speed such that each image taken by the mouse is completely similar to each other?

@Perillux You don't need to pay to retrieve your mails. There is a workaround for this. You can configure hotmail to forward your emails to your GMail address. In your GMail, you can simply label all mails coming from youraddy@physicsforums.com. Hope that helps.

I guess plotting y-squareds in terms of x is a Texas Instruments limitation. Substituting for variables can be done, but then, imagine one has 5 or 6 graphs to plot and wishes to see where they intersect. Cumbersome. Basically, I shall learn all the quadratic rules, graph transformations, and...

CompuChip, Thank you very much for this reply, but is it the only way I can plot graphs of y^2? I surmise, like many would do as well, that rotating your calculator is awkward. Besides, though you could type the positive part for Y1, and then plot Y2=-Y1 as a shortcut, it is still cumbersome...

The <Diamond> + F1 menu allows me to plot only Y= graphs. How do I plot a graph of say, y^2=x+4 ? You cannot plot y=Root(x+4) because you would miss the negative part of y. If this is the only way to plot such graphs, how to you tell TI to plot a y= +/- Root(x+4) ? Thanks.

It would be cool if the e-mails were provided by GMail, because some people here, linux users like me, are anti-microsoft and have solemnly pledged never to open any microsoft site in their browser.

@alphysicist: I was worried I had a fake Titanium. Mine is a refurbished one. I've sent the calculator to my seller yesterday, and got the keys corrected today. (My mistake: I didn't notice the difference when I compared my physical calculator and the downloaded picture.) Thank you for...

How to enter negative numbers in Ti89 Titanium?? This is so hard. I wonder whether I need more training in Google search or is it that the Ti89Titanium has a very very poor Knowledge Base and Tutorial. How do you enter a negative value? During my search, I noticed that the Ti89 uses a key...