Originally Posted by

**hockeyplayer** Hello everyone,

I am a college chemistry studen and I would like to get some help with my TI 89 calculator. I am having some major problems with it and I cannot seem to find anyone who knows how to use this thing.

I have several questions and if anyone could please help me I would appreciate it.

first I am having problems doing temp conversions with this calculator. I followed the book exactly, but I never get the correct answer. I use the catalogue button, get the temp conversion then select what I am looking for. for example I chose temp conversion 98.6 degrees F _ C. I know the answer is 37, but it gives me some off the wall answer.

another problem I am having is simple division. I wanted to divide 125/100 and all it does is reduce the fraction. I can do the problem, but I just don't understand why it does this.

I also have problems with the scientific notation. if I ask the calculator to give me a decimal in scientific notation it won't. another example is if I type .00067 into the calculator, go to mode, select scientific notation, and hit enter it just gives me the same decimal back.

under the unit conversions when I ask something such as convert meters to inches it gives me the answer in m squared or whatever.

I am very confused and what it boils down to is I DO NOT trust this calculator to do what it's supposed to do. if anyone could PLEASE help me I'd appreciate it. PLEASE e-mail me or post something to help me. I am having an exam this week and I feel so far behind b/c I've been trying to figure this calculator out, with basically no results.

thank you all