# Tagged Questions

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

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### 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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### 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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### Store a constant on a TI 84

On my TI 84 I have a variable E with the value 8.854e-12, ie. Epsilon not, which I use for my physics class. I also have G and M for 6.67384e-11 and 4pi e-7, both of which I have found I need for my ...
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### Can i do the summation by only one single expression in calculator? How?

How to calculate the expression easily?
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### 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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### 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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### Calcution's functionality & webapplication

Is there a application in Internet or a function in a calculator at windows 7 to make a caculation containing 400 and 360? It is easier to calculate if numbers have low numbers.
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### Find the absolute and relative error for a calculator with incorrect rounding

A calculator is out of order. The calculator will round up every single number to the nearest integer if the value at the first decimal digit is 6 and above, or else it rounds down the number to be ...
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### 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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### 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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### How does my $10\times10$ abacus work?

How does this $10\times10$ abacus work? More specific: Counting: is it common to count from 1 to 100, or from 1 to 9.999.999? How does addition work? How does multiplication work? Are there any ...
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### What is logarithm & how log table can be constructed by me?

I'm studying properties of logarithm but I don't understand how base e works. Base 10 looks simple while doing calculations of numbers having multiple of 10. As other numbers are not multiple of 10 ...
507 views

### Finding the eigenvectors using a calculator?

Can I find the eigenvectors using a regular calculator or a graphical calculator? ...
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### Solving $x$ for $y = x^x$ using a normal scientific calculator (no native Lambert W function)?

Solving $x$ for $y = x^x$ using Lambert W function is clear enough thanks to this handy answer, but as I'm using the solution in a network support document I need it in a form that can be solved on a ...
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### Should I learn to use RPN

I'm a young scientific student in high school (Lycée français). And I wanted to know if RPN would be interesting at my level? I do possess a RPN calculator (HP Prime), so I can start to use it ...
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### Program for General Form

I am trying to find the general form of the conic sections, however, I am not able to create a program that runs it. I know the way you find it is by using B^2-4AC but I would like to write a program ...
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### How can I plot a phase portrait on Ti-Nspire?

I'm trying to graph the direction field and phase portrait of a system of differential equations, but I don't know how to. I can't seem to find any tutorials online. I can only graph slope fields.
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### Differentiating using Calculator Trick with Definite Derivative

Differentiate $y=sec^2(x)$ Answer in Problem Set: $2x\cdot sec^2(x)\cdot tan^2(x)$ Answer in Wolfram Alpha: $2 \cdot tan(x) \cdot sec^2(x)$ We can always solve it manually, deriving and stuff; but ...
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### How to use the BA II Plus financial calculator to solve for IRR and NPV?

I've calculated the answers manually but would like to learn how to do so on the financial calculator to save time on the test and minimize errors. How to do this? Problem: You have been offered a ...
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### 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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### 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 ...
2k views

### Multivariable polynomial long division calculator

Is there code/online calculator that divides polynomials in multiple variables? The answers are always other polynomials, but they have many variables.
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### Is there any derivative that the Ti-Nspire can't do?

A fellow student was showing off by quickly have his ti-nspire solve the homework problems. Just wondering if there is any derivative that the ti-nspire would mess up on. Just where is the limit ...
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### TI-nspire CX CAS Trig Integration / Graphing

I am having trouble with the TI-nspire CX CAS solving trig integration and graphing. When I try trig integration, I get this result: Integral from 0 to 6pi of sqrt((xsinx)^2+(xcosx)^2) dx it returns ...
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### Find the limit of sequence.

Assume $f(x) \in C^2[a,b]$ and $f(a)f(b)<0,f'(x)>0,f''(x)>0,\forall x \in[a,b].$Prove the sequence  x_{n+1}=x_{n}-\frac{f(x_n)}{f'(x_n) } \quad x_1 \in[a,b]\text{ and } x_1 \text{is to ...
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http://codepen.io/anon/pen/jrMvdL A = P ∗ ( r ( 1 + r ) n ) / ( ( 1 + r ) n − 1 ) My math is correct typed into a calculator. Why are the auto loan calculators of google and bankrate giving ...
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### Large arithmetic calculator?

I am looking for an (online) calculator that can compute millions of digits (maybe a billion) without slowing my computer down and would perform these exact computations: Round[$2^{2^{24.0193819506}}$...
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### Graphing calculator for third year undergrad applied modules

Can someone recommend me a good and affordable calculator please. I am going to sit exams like partial differential equations (method of characteristics related stuff), nonlinear dynamical systems and ...