Questions regarding calculators such as the TI-83 (Plus), HP 50g, and other calculator models.

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3
votes
4answers
11k views

TI-83 Plus: Is it possible to find the eigenvalues on this calculator?

I searched the Internet and can't seem to find a source on how to find the eigenvalues on a TI-83 Plus calculator. Can anyone give me a hand?
0
votes
4answers
104 views

solving triangles

I have $\displaystyle\frac{56.851}{\tan(42.0892^\circ)}$, how do I figure that out on a calculator? I tried and I keep getting syntax error and I don't know how to make degrees. Google was no help ...
2
votes
1answer
218 views

How can I see alternative trigonometry solutions on a calculator?

When doing inverse trigonometric equations on a calculator, only the lowest positive solution is shown. How can I see alternative solutions (specifically for a Casio FX85ES)? Current behaviour: ...
0
votes
1answer
166 views

What is the difference between * and x

For PC calculators you use * instead of x, or / instead of ...
0
votes
1answer
1k views

Enter “Int” on Casio graphical calculator

Hi I know this sounds like a really beginner question, but I cannot find how to enter the terms "Int" and "Ran#" into my calculator (Casio fx-9750GII) My code is thus: 1->L 100->H Int ...
4
votes
4answers
390 views

A question about calculators (are $\sin^2 49^{\circ}$ and $\cos^2 49^{\circ}$ irrational?)

Are $(\sin 49^{\circ})^2$ and $(\cos 49^{\circ})^2$ irrational numbers? When you enter, $(\sin 49^{\circ})^2$ in a calculator, it shows a long number (and if it is irrational, then clearly the ...
2
votes
1answer
4k views

Calculating the percentage of the difference between two values

If I have the following two different values for x: x = 0.022 x = 0.020 And, if I want to calculate the percentage of the difference (change) in x, will it be? ---> 0.022 - 0.020 = 0.002 ---> ...
0
votes
2answers
7k views

Calculator model with mod function?

I'm wondering does anyone know of a scientific calculator with a mod function? In C# this is shown as follows (just in case there are any other mods that a mathematical non-savant such as myself ...
1
vote
1answer
427 views

Ti-83 Probability of events occurring

First time here, more frequent over at StackOverflow. So not sure if calculator questions are accepted here, but I'll ask. Is there a quick way to solve problems like this in the ti-83: 82% shot ...
0
votes
1answer
3k views

Calculate derivatives on Casio Graphics Calculator?

Is there any way I can calculate derivatives using a Casio Graphing Calculator? Is there a program available for the calculator which can calculate them?
2
votes
2answers
3k views

is there a CIS button on graphic calculators (Casio/TI)

Is there a cis (CosX + iSinX) Button in CASIO graphic calculators ? if so where its ? if no is there any turn around for it ? PS. I got a CASIO fx-9860G Thanks
0
votes
5answers
2k views

Is there a calculator out there that shows the full answer instead of shortening it?

I'm looking for a calculator that shows a full answer regardless of it's length. For example the assignment 2^1000 will output: ...
0
votes
2answers
2k views

How to create an array in TI-89 Titanium calculator?

Has anyone experienced using TI-89 BASIC programming to solve math problems? I want to create an array using TI-89 but I don't know how? Update I tried both ...
1
vote
2answers
213 views

calculate x using regression equation

I calculated the cubic regression for a set of numbers following the instructions on this site: http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=71235 I am wondering how do I evaluate using the ...
25
votes
4answers
7k views

Calculator algorithms

Does there exist a good reference on the algorithms used by calculators, especially on the trigonometric and transcendental functions? I would still like to know how Casio generates its random ...
1
vote
1answer
726 views

Advanced math software for the TI-89 (discriminant of a general polynomial?)

I was wondering if this question should be posted in this forum or in Stack Exchange, but reading both "What kind of questions can I ask here?", in Math I found Software that mathematicians use ...
20
votes
7answers
1k views

“Why do I always get 1 when I keep hitting the square root button on my calculator?”

I asked myself this question when I was a young boy playing around with the calculator. Today, I think I know the answer, but I'm not sure whether I'd be able to explain it to a child or layman ...