S

#### Steven O.

- Jan 1, 1970

- 0

electronics. For the tests, I need a calculator which can solve

systems of linear equations with complex coefficients. (When doing

the homework at home, I use Mathcad.)

I just went to Radio Shack, and got a case of sticker shock (much like

what I'm feeling these days when I go to buy gasoline for my car). The

cheap calculators, which cannot do systems of linear equations, cost

around $20. The calculators which look like they probably can do

systems of linear equations -- although it's not entirely clear from

the packaging -- jump to around $125 to $150. Prices on E-bay are

cheaper, but I'm not entirely sure what I am buying.

Can someone suggest a few models of calculators that:

1. Can solve systems of linear equations with complex coefficients.

2. Are relatively easy to learn to use, and to do the data entry.

3. If possible, perhaps cost less than $100, though I will spend

$100+ if it's unavoidable.

4. Does other stuff that is like to come up in undergrad level EE

courses and tests.

If anyone really wants to be a Saint, take a peek on E-bay, at some of

the stuff currently on sale, and tell me if any of those calculators

would meet my requirements. (Here's a list of just a few that are

currently being offered under the keywords "Calculator" and

"Scientific": TI-81, TI-83, TI-85, TI-89.)

A check of the TI Web site suggests that the TI-83 or TI-84 have the

features I want, but again, it's hard to know without having used

them. At the high end, they have the Voyager 200 (which costs $200),

and the TI-89 Titanium (which costs $150). Recommendations for the

minimum I really need for my purposes -- and for options for brands

other than TI -- would be appreciated.

Thanks in advance for all replies.

Steve O.

"Spying On The College Of Your Choice" -- How to pick the college that is the Best Match for a high school student's needs.

http://www.SpyingOnTheCollegeOfYourChoice.com