Myself and Kerm are signed up to Yahoo! Answers to try to find people there asking for help with their graphing calculator. Sadly, I keep running into questions I don't know how to answer, so I thought maybe I should start a topic here and see if I can get some help from you guys to pass off to there, or maybe some of you could sign up there and leave an answer, totally up to you.

Anyways, here's this one:

Quote:
How to use the TI-86 calculator to find loan goals?

The question is:
"Suppose you start saving today for a \$60,000 down payment on a house you want to purchase in 7 years. Assume that you make no deposits towards this account after your initial deposit. How much would you have to deposit in the account for it to be 60,000 after 7 years? The account has an interest of .07% and is compounded daily."
This is a pretty straightforward application for the TVM solver. You would set:
- FV (future value) = 60000
- I% (interest percentage) = 0.07 (which is very low. Did he mean 7% = 7.0?)
- P/Y = C/Y = 365
- PMT = 0
- N = 365*7

Solve for PV (present value). I tried this on my own calculator, and the answer is \$59,706. If you have a not-so-terrible interest rate 10 times higher, 0.7%, you get \$57,130, and for the very generous interest rate of 7%, you get \$36,759. I refreshed my memory on using the TVM Solver while working on my new book, but there are plenty of good resources out there. I just am not sure what the TI-86's TVM solver is like, and mine are all missing their batteries.

It seemed like they were wanting to store notes, which I could have answered, however, they want equations and such in classes I know nothing of. :<
tifreak8x wrote:

It seemed like they were wanting to store notes, which I could have answered, however, they want equations and such in classes I know nothing of. :<
I suggested Document DE, since it now supports all kinds of fun symbols.
I would have, however, their request seemed to indicate they wanted to be able to use these in a program as well? I couldn't quite tell, hence my posting it up here.
tifreak8x wrote:
I would have, however, their request seemed to indicate they wanted to be able to use these in a program as well? I couldn't quite tell, hence my posting it up here.
It was indeed an interesting way to phrase the question. I got the impression that they were storing values in variables only because they didn't know another way to store values (as numbers or strings).

How to make a frequency histogram?
on a calculator( TI-84 plus silver edition)

Not really sure if there is enough information to go on for this.

Linear equation problem?
how can i make it so that in my calculator (TI-84) i can make a number multiply after a set number of times it is used in the equation

A pre-calc word problem?
The shape and thickness of a contact lens depends on the vision correction that is needed. the intersection of the following inequalities describes a typical contact lens cross section. (X and y are measured in millimeters) sketch the region. How wide is the contact lens? How thick is it?

y<(or equal to) -0.065x^2 + 2.34

y>(or equal to) -0.055x^2 + 1.98

Thank you so much! I am just so confused!
P.S. I am supposed to be putting this on a graphing calculator (I have the TI-84 plus) but I just don't know how to do this one problem!

Calculator brands?.......?
I have a TI-84 plus silver edition and I was wondering if there was any way to do fractions on it.

Now I've left an answer on it, however, if you feel it could be expanded upon, please feel free.
I gave that answer a shot, tifreak8x. For future reference, the MathPrint OSes contain some thorough fraction features (as I learned more comprehensively about to write my book).

tifreak8x wrote:

Answered. Thanks for bringing that one up.

Register to Join the Conversation
Have your own thoughts to add to this or any other topic? Want to ask a question, offer a suggestion, share your own programs and projects, upload a file to the file archives, get help with calculator and computer programming, or simply chat with like-minded coders and tech and calculator enthusiasts via the site-wide AJAX SAX widget? Registration for a free Cemetech account only takes a minute.

»
» All times are UTC - 5 Hours

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum