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

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TI-89 factor() return value to two variables

I am writing a function for my TI-89 Titanium. I see that there is a built-in factor() function under Algebra(F2). I know that in my use case it is going to be the sum of two integers; for example my ...
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2answers
63 views

What is this picture? [on hold]

This appeared in a book by Texas Instruments, "The International Math on Keys Book," which was really a glorified manual for AOS (Algebraic Operating System) calculators like the TI-30. This book is ...
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1answer
24 views

How to calculate monthly payment

I have data inside spreadsheet and it is calculationg based on formula to calculate Monthly payemnt. Now I am implementing this functionality in my HTML using ...
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0answers
17 views

Calculator to check derivative answer

I hope I am not off topic here, if so, feel free to remove this post. I have a Casio calculator (CFX-9850GC PLUS) that allows me to check if my derivation is correct. For example, if I want to check ...
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2answers
79 views

“How much is it more/small than” calculator.

I need to find a calculator that will essentially give me how ever much a number is smaller/bigger than another number. Example: If I enter the two numbers '1' and '4'. It will tell me, ...
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5answers
83 views

Any good exponent calculators? [closed]

Can somebody give me a calculator that can do something like "5000^5000" ? I'm talking about a calculator that can do 2000 to the power of 2000 and not give me E+. Thanks!
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0answers
22 views

How to find the right way to pick a random selection

I love the website AnyDice (http://anydice.com). When I needed to make a dice game, it saved me hours of coding and testing. Now, I need something similar, but not for dice. I'm trying to do a ...
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1answer
26 views

Evaluating a decimal exponent

The example I am stuck with is $(-1)^.456$. According to my calculator, the answer is -1. According to WolframAlpha and the Google Calculator, it is a complex number. WolframAlpha -- ...
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0answers
15 views

Can't draw negative $x$ values on HP 50G

I'm unable to find an option to change the range of the function I'm plotting on the HP 50G, can anyone tell me where it is? My graphs always start with $x>0$.
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2answers
82 views

How to evaluate factorials greater than $69!$

How to evaluate factorials greater than $69!$? On my calculator, $69!$ is the largest number I can enter before it gives me a syntax error, most likely due to an overflow. Is there a way to evaluate ...
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0answers
25 views

How to make powers work right on a casio calculator?

I pressed some random buttons and it worked fine,but now its not working again. for example my calculator shows that -6^2 is - 36 and not 36, anyone know how to fix it??? My clculator model is casio ...
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1answer
57 views

How to calculate to the power of 1/n? [closed]

Has anyone figured out how to calculate to the power of $1/n$ ("^1/n") on their financial calculator? I just figured I have been doing it wrong this whole time. Does anyone know the right button to ...
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1answer
22 views

Getting function into TI-83 calculator trouble

I'm trying to get $$y = -0.1t^2 + 1.2t + 98.6, \quad0 \le t \leq 12 $$ into my TI-83 calculator to graph it, but I'm having trouble figuring out the correct syntax for this one. What it would be? I ...
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3answers
46 views

How to convert a big number back to decimals when you divide 1/15000 using a basic simple calculator?

This question has always stumped me since using a simple basic calculator over 20 years ago. I'm using the basic calculator on windows or it can be any for that matter. I input the following into ...
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0answers
34 views

TI-83 gets a simple convertion to polar form wrong

I am trying to do the equation $-1-i$ converted to Polar form on the format e^i The answer (according to my own computations) should be $$ \sqrt2e^{i5\pi/4} $$ While the calculator says it is $$ ...
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1answer
23 views

How to see whole answers for long floats on TI-83?

Disclaimer: I guess answers on calculators are on topic for this SE site, tried searching and found alot of non-closed/moved questions. If not, please say so and i'll be happy to move the post ...
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0answers
34 views

Am I plugging this into the calculator correctly?

I want to make sure I am plugging these into my BA II plus correctly in order to help me when I'm taking an exam. I keep looking up how to work the calculator and I think I have gotten the steps down ...
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1answer
30 views

Where can I find a binary calculator that can do exponentiations, roots and logarithms?

I've searched on Google, but all I found was binary calculators that can do additions, subtractions, multiplications and divisions, nothing else.
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2answers
51 views

Convert a fraction to infinite repeating decimal?

We all know how to convert an infinite repeating decimal to fraction. It is simple. But now I have these fractions 10/23, 3/29, etc. I know these fractions can be written in infinite repeating ...
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1answer
19 views

Graph single equation on calculator

Just got a new Casio fx-9750gII and just wondering, since you can store up to 20 functions, how do I choose to only graph a specific one at a time? And also to choose witch one to make a table with, ...
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1answer
53 views

How to get 2 using a standard scientific calculator without pressing the number buttons 0 to 9 and the buttons $+-\times\div$?

I was challenged by a friend to get a number 2 by using a standard scientific calculator but without pressing the number buttons 0 to 9 and the buttons $+-\times\div$. I could get 1 from $\ln e=1$. ...
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0answers
73 views

Casio fx-83gt - help! Linear Programming

Hi guys I'm studying a module called Operational Research and in particular linear programming. I am doing the simplex method and as anyone who studies linear programming would know, you need to ...
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0answers
210 views

Complex number systems of equations fx-115es plus calc?

Anyone here know how to use the EQN mode on the casio fx-115es plus to find solutions to a system of equations involving complex numbers? Also, if that's not possible, what about entering complex ...
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2answers
65 views

Looking for a function calculator

I am looking for a calculator which can calculate functions like $f(x) = x+2$ at $x=a$ etc; but I am unable to do so. Can you recommend any online calculator?
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1answer
139 views

Calculating FV and Payments for an inflation indexed savings (graduated annuity)

I have searched high and low but I can't seem to find the right calculation to work out exactly what I need. What I need is an equation. To work out the FV of an inflation indexed savings plan. The ...
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81 views

Multiplication problems

Can any one confirm which solution is correct and accurate solution if we have $0.004 × 10,000 = 40$ or $0.004 × 10,000 = 000040$ also, $6.51 × 1^4 = 65100.$ or $6.51 × 1^4 = 65100$ thank ...
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0answers
57 views

Finding the eigenvectors using a calculator?

Can I find the eigenvectors using a regular calculator or a graphical calculator? ...
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1answer
521 views

TI Nspire CX CAS fails to perfrom basic integration

I plugged rather basic integral into my new calculator (TI Nspire CX CAS) just to see what it could do. Surprisingly, it returned undef and I'm wondering if ...
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2answers
191 views

How to solve equations with Casio FX-85WA calculator

I am testing the casio FX-85WA calculator to solve equations, so I am trying to solve a very simple one: $2x-1=3$. But I am unable to input the equal sign, as it puts the result. I've seen others ...
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1answer
125 views

Math for Future Value of Growing Annuity

Am I working this out correctly? I need to verify that my code is correct... $$1000 \cdot \left(\frac{(1 + 0.1 / 12)^{40 * 12} - (1 + 0.06 / 12)^{40 * 12}}{(0.1 / 12) - (0.06 / 12)}\right)$$ ...
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3answers
52 views

Percentage operation gives different results with two scientific calculator

The operation is: $21.99 + 9.75$$\%$ On the Texas Instruments model TI36X-Pro the answer is: $22.0875$ But when I tried on the Casio FX-991ES Plus the result is: $24.134025$ Which is the correct ...
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2answers
159 views

Weird computation error when using fnInt (numerical integral) on TI-84 Plus

Today in Calculus class I was bored so I decided to try and approximate $\pi$ by evaluating $ \left( \displaystyle \int_{-a}^a e^{-x^2} dx \right)^2$ on my calculator for larger and larger values of ...
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42 views

Drawing straight line graph with large scale

I was given the equation: $$y(x) = 10000x + 150000 ,~~ 0 \lt x \lt 60$$ and was asked to draw the graph. I know that it is a positive straight line intercepting through $150000$, but I don't know ...
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5answers
163 views

Calculate ln(x) using 8-digit calculator

I have a bit of a unique problem. Well, maybe not a problem because I'm really just curious about it, but... I have a simple 8 digit calculator. It has +, -, x, /, and a constant operation function. ...
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2answers
172 views

Simplfy a complex matrix into a real one

I encounter systems of linear complex equations (At most 3 equations) in my circuit analysis course. The calculator I am using is Casio fx-991ES and it only accepts real elements when in matrix or ...
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2answers
431 views

Graphing an ellipse on TI-nspire CX CAS

How do I graph an ellipse on a TI-nspire CX CAS? I know how to graph an ellipse with the equation $$\frac{(x-h)^2}{a^2} + \frac{(y-k)^2}{b^2 }=1$$ but I don't know how to put coefficients in the ...
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1answer
36 views

how can get simple function

how can get $y$ simple function of $x$ from : $$ \frac{2 \sqrt{y} \sqrt{y-b} \log \left(\sqrt{y-b}+\sqrt{y}\right)}{\sqrt{\frac{A y (y-b)}{b}}}+\text{constant} =x$$ where : $$ y=y_0 at x=0$$ and ...
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4answers
567 views

Calculator similar to Desmos but for 3D

Is there a calculator with functionality similar to Desmos but in 3 dimensions? I am looking to learn about families of quadric surfaces so I am looking for a 3D calculator with sliders.
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1answer
456 views

What exactly do the sin, cos, tan buttons do on a calculator?

I understand they mean sine, cosine, tangent, but what exactly is the calculator doing when I enter an angle and press those buttons? Edit: To help others better understand my question, my question ...
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3answers
762 views

Need a good non-graphing calculus calculator that can derive and integrate

It's my 3rd time going through Calculus II and I want to pass this class already. I'm not trying to cheat I just see people with fancy calculators and I have never even used a calculator on tests ...
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0answers
54 views

Calculator for math/finance/statistics that can store .PDF

I need a new calculator. And rather than googling and doing research, I figured somebody on stackexchange probably know this. Requirements/facts about me Symbolic calculator (can do double ...
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4answers
644 views

Weird stuff happening with complex numbers on a ti-84

So, I'm trying to do some calculations for my Electrical engineering homework. This requires a bit of algebra with complex numbers. I have been finding that some of the calculations that my calculator ...
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3answers
673 views

Why would a calculator have base 5?

I have a calculator that I found recently that has a base 5 option. It has options labelled HEX, BIN, DEC, OCT, and PEN. My son set it on PEN, and no numbers above 4 worked anymore. Playing around ...
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3answers
46 views

Order of powers

Which of the following is $a^{b^c}$ equal to? $a^{(b^c)}$ or ${(a^b)}^c = a^{bc}$ This is probably a really basic question but I can't seem to find the answer anywhere.
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41 views

From $\tan\varphi = -3/2 = -1,5$ to $\varphi\approx 123,69^\circ$

Sorry for this question but what do I have to type into my counter to come from $$\tan \varphi = -1,5 $$ to $\approx 123,69^\circ$ and $\approx 303,69^\circ$? Thanks!
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TI83+. Math-> Solver. Why does it give different solutions?

Not sure if anyone still uses this one.... Recall the keystrokes: Math 0:Solver Up arrow Enter equation Press ENTER You will now be at a prompt displaying the equation, and a line saying x=### ...
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1answer
120 views

help - how to calculate distance between to points ( latitude/longtitude) without ACOS / ATAN

I need to calculate the distance between to points (latitude/longitude) in WebI (SAP system) and I have limited formulas there (don't have : ACOS / ...
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1answer
53 views

Rational calculator

I am calculating a recursive equation: $X_n = \frac{1}{2}(X_{n-1} + \frac{3}{X_{n-1}})$ I need a free online calculator that can calculate for $n=7$ $(1/2)\times(88063572/50843527+(3\times ...
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1answer
272 views

Graphing multivariable functions

Is it possible to graph out a multivariable function (3 variables at max) on a graphing calculator? If yes, how? My instrument is the TI83.
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214 views

What is the CPLX button on a calculator?

On my cheap "dollar store" scientific calculator, it has a 2nd function button named "CPLX". When you press it, the calculator displays some text similar to the "DEG, RAD, GRAD" that says "CPLX". ...