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### Calculator Issues!

Posted: Sat Nov 02, 2019 11:00 pm
Hi,
I have been practicing a lot of problems lately and I realized that whenever I calculate things like the Heisenberg uncertainty equation, I always get the wrong answer using my TI-30XIIS calculator. My calculator is set to SCI and DEG, yet I still get answers incorrect! However, when I check my solutions manual, I did all the work correctly and even entered it into my calculator correctly, but it gives me an answer that is wildly off. But when I use my graphing calculator it calculates correctly. Does anybody have any advice?

### Re: Calculator Issues!

Posted: Sat Nov 02, 2019 11:09 pm
I am having the same problems! I think it has to do with plugging in scientific notation and may be able to be solved with parentheses, but I'm still trying to figure it out, too!

Hopefully someone else has a concrete solution.

### Re: Calculator Issues!

Posted: Sat Nov 02, 2019 11:13 pm
I use to have this calculator and I noticed that it has a lot of problems dividing multiple numbers that you are multiplying together. I had to get a new calculator because it wasnâ€™t working for me but maybe you can just make sure to put all of your multiplying factors in parentheses. Hope this helps!!

### Re: Calculator Issues!

Posted: Sat Nov 02, 2019 11:25 pm
I think your problem is that you set the calculator to SCI. SCI makes ALL the calculations in scientific notation. For example if you did 5 x 5, you wouldn't get 25, you would get 2.5x10^-1. I think that this is what would throw your answers off. So change your settings to the default settings. I think for this, resetting the calculator works the best, so you don't miss anything. If you want to put something in scientific notation, you should do that manually at the end of a problem. If there are numbers in scientific notation, it is always good to put that number into parentheses to prevent any miscalculations. Also if you are using a large formula to solve something, I think that it is easier to solve it piece by piece by piece rather than putting it into the calculator all at once. If your calculator is just acting weird in general or glitchy, reset it and make sure that the battery is charged up. I hope this helps!