Calculator Definition and 518 Threads

I have a solar calculator and it also has a battery what I want to know if this solar cell would charge the battery. The positive from solar cell is connected to battery, but the negative from solar cell seems to pass thru two diodes before connecting to battery. John

The goal of this game is to get your opponents life points down to 0 before he gets yours down to 0. You take turns hitting each other until one persons health is at 0. The variables are: Attack (accuracy of hitting instead of missing) Strength (how high you can hit) Defense (determines...

Hey, I was wondering if i need to be a mental calculator to pursue my career in theoretical physics or mathematics? I mean I am not terrible at calculating math problems like 17 x 24 in my head but i am not super fast at calculating in my head problems a bit harder than that. If so which field...

I have been looking for an integration calculator. I need to solve \int_0^{\pi} \frac{\cos (a \cos \theta)}{\sin \theta} d\theta This is a sine integral that likely involve numerical analysis. I tried Wolfram free Mathematica and it did not find a solution. Please advice.

Hello, I am allowed to take a graphing calculator to the Math Praxis Content knowledge test. Does anyone have experience taking a TI-Nspire to the test and did they allow you to use it? I wanted to know this because I need to buy a Ti-Nspire (which has a key pad), but the ETS does not seem to...

New release of Jorrie's tabular calculator. http://www.einsteins-theory-of-relativity-4engineers.com/LightCone1.0/LightCone.html this is clearly the best on-line cosmology calculator for the general user on the web. Hands down. Lightcone rules. that's all there is to say. Check it out...

Hello all, So I write a finance final tomorrow morning and my financial calculator decided to quit working on me. The screen would flash as it turned off and on rapidly, almost as if there was a loose connection. So I popped 'er open and here is what I found: http://i.imgur.com/UdASBX1.jpg...

Jorrie obviously doesn't have to adopt any of our suggestions in building his tabular (cosmic history) calculator. It's his project and he's doing all the work. But he's said in several threads that he would like reactions/suggestions from us (and he may have used them in some cases.) Maybe...

Hi. I'm looking for a calculator similar to the Casio fx-911es plus, but with programming capabilities,or at least simply a small expression that I can write and save to. The fx-911 is mostly good, but it annoys me that it clears memory on Power off (minus the 8 variables). I used to have...

I recently started programming a basic web based app. that calculates the forces within a standard wood truss. I thought it might be of some interest to visitors to the Physics forums. I've added most of the common types of trusses used in residential construction, with more to come later...

Does anyone know of a good online 3d calculator that will actually work. Thanks.

Homework Statement Find the length of the curve between x=0 and x=1. Note: can this be done without a calculator?Homework Equations y = sqrt(4-x^2) The Attempt at a Solution x=2sin∅ dx = 2cos∅ d∅ sqrt(4-4(sin∅)^2) ---> 2cos∅integral (0 to 1) sqrt(1+(-2sin∅)^2) integral (0 to 1)...

Calculator Vs computer...precision Im doing a simple research to find out which device is better for calculations Valueof π On scientific calculator = 3.141592654 on computer calculator = 3.14159265359 How do I find percent error? And would this difference have any impact on...

Is there a CASIO calculator "end of line" way? Without starting from the beginning and pressing 'back'; from being already in editing of previous data. Model is fx-115MS

Hello everyone, I was just going through the manual of my casio fx-350ES calculator to find out how i can input an equation with one variable. let's say the equation below: (t/5)^1.514 t being the variable Then i would like to input a range of values for my variable, t so that i can...

Consider the function: f(x)= x7-4x5-3x4+4x3+12x2-12/x7 a) Graph the function on [-6,6] by [-6,6]. From your graph, estimate how many x-intercepts the function has and what values they are. b) Now graph the function on [-1.5, -1.4] by [-10-4, 10-4] and on [1.4, 1.5] by [-10-5, 10-5] From your...

Hai, calculators connoiseurs, hope you can help this lost lamb. Non-connoiseurs, come in, you might learn something from our experts in the field :biggrin: Now...I've used a Sharp EL-506W for four and half years. Its main drawback is the lack of a proper way of representing big huge equations...

Homework Statement This isn't homework but its part of my assignment. I am creating a center of gravity calculator for a car using excel which I can enter the locations of different components and their masses, and it will give me the center of gravity for the car. I am then using this to...

I am used to Classpad but have to quickly train myself up to use TI for exam requirements. I can't work out how to do 2 bread and butter things: 1. get an answer in exact form, ie: $$\frac{\pi}{2}+\frac{\pi}{2}=\pi$$ and, 2. how to differentiate $$x^2\ or\ 2x^3+3x$$ without having to...

Hey guys this question is going to sound pretty dumb, but I never learned how to do this. What if I want to find say, cos(pi/5) but I don't have a calculator? Even if I did have a calculator, I want it in nice values, like square roots, rather than decimals anyway. If I have something...

Homework Statement I was looking at a solution for a practise question and in the last step they simplified -[(0.02)^4]/[4(0.98)^4] to 1/(4*49^4) How do you do this without a calculator?

My Texas Intrusments graphics calculator recently had some liquid spilt over it and therefore doesn't work anymore. I'm now wondering whether it's worth spending some $200 for a new graphics calculator or whether I should just settle for a simple Casio FX100AU? I'm in an Electrical Engineering...

Ok so the title is a bit of an over-kill, but seriously sometimes I feel like when I'm doing math my brain is like a calculator. (though no where near as efficient of course) I'm able to work a solution based on what I'm given, but I'm just a number cruncher, and I don't seem to understand...

Hey guys, New to the board, hoping someone can help me. I am trying to identify what I believe to be the face of a very old calculator, circa 70's or 80's. Unfortunately it was butchered by someone for a project and there's no identifying marks, except for a part number on a circuit board...

Hello, first time poster here! I am trying to understand some results I am getting from this "Relativistic Star Ship Calculator". This site sets up the question I'm trying to answer exactly like I imagined it should (thanks to The Forever War). From the description: The star ship...

I need to evaluate the following expression: \sum_{1}^{x}1-0.02\ln x For very large values of x (>1,000,000). Is there a calculator that can do this, or is there a different way I can write the expression in a calculable manner?

Hello Im solving a problem with calculator to find the zeta in this equation but as i see some persons they solved this equation with different numbers(1.63 ) without calculator.now i want to know how can fine zeta in this equation without calculator and fast?

Hi. Does anyone know a spreadysheet type of a program that can calculate 100 digit numbers to 20-30 decimal places?

My beloved TI-85 died. It had served me quite well for 16 years, and I still think it's one of the very best calculators TI ever put out. But after changing the button battery, for some reason it started to refuse to display anything, eventually reaching the point where it wouldn't even turn on...

On a scientific calculator, how do you get a root of a number for an exponiental? Ex.-.653846^1/12= I was taking 1/12 and making it so I can make it exponent for .653846. Obviously wrong. What am I doing here??

Homework Statement Find the domain and range of the following function without the use of a calculator: f(x) = sec (pi x/4) Homework Equations As far as I know, this problem doesn't specifically require "equations". Therefore I am leaving this section blank. Not because I am a...

How would one solve the following WITHOUT a calculator? Sub in t as x^{\frac{1}{2}} 4x+8=33x^{\frac{1}{2}} I just don't see how to do this without a calculator. If I take t^2=x, then sub it in I need to do the quadratic formula which is too hard without a calculator/would take too...

The new A20 tabular calculator let's you look at changing geometry out to about 88 billion years according to the standard LCDM cosmic model (with usual estimates for the parameters.). http://www.einsteins-theory-of-relativity-4engineers.com/CosmoLean_A20.html It's pretty neat. Here is one...

I know this is a pretty basic question, but it's holding me back from doing my homework due tonight. How do I use trig functions on my calculator. For example and problem in my book says: (483 N) cos (44) = 347 N When I plug it in my calculator like so: (483)cos(44) = I get: 482.9243181...

Hi, everyone. I was wondering if you guys know a good *programmable* graphing calculator for Windows XP. I took a look at Microsoft Maths which was kinda fine but it lacked many feature (even though the input was neat). And then I came across GraphCalc (http://www.graphcalc.com/) which was...

Has anyone modified a calculators programming syntax? I have a Voyage 200 and was wondering if I could get it to function with MATLAB syntax. Would I need to modify the operating system to be able to do this? Hello and thanks

Hello all. I'm teaching myself C++ (my first programming language), and as an exploration I decided to see if I could make a simple four-function calculator. The thing is I'm having trouble. I managed to successfully write a program that would input two integers and return all four functions...

Homework Statement For the rod in Problem 10 (already solved this, see below): (a) plot u vs. x for t= 5, 10, 20, 40, 100, and 200 (b) plot u vs. t for x= 10, 20, and 30 (c) how long does it take for the entire rod to cool off to a temp. of no more than 1 degree C? Homework...

I got the calculator free i don't even know how to turn it on :(

Hi all - couldn't find another suitable place to post this on the Internet... My TI92 died last week after 15 years of use (OK I killed it with coffee), and I thought I'd just try and get by with Wolfram Alpha but it's just clunky and horrible. I'm currently using my spare TI86 which lacks a...

I'm taking a vector analysis course this semester and would like a vector capable calculator. For calculus I have been using a TI-83. Any recommendations? Price not an issue, but as always its better to get the job done for less. Thanks!

Can someone guide me toward using my TI-89 Titanium calculator for sequences? I would like to be able to PUT IN a sequence of numbers and have it GIVE ME the formula. Not vice versa please. Thanks.

Homework Statement These are three separate problems sec θ = 2 cot θ =1 csc θ = 2 Homework Equations I'm not sure which of the trigonometric identities to use here. Therefore, I'm not sure which equations are relevant. The Attempt at a Solution I've never learned how to...

For undergraduate college, would you guys suggest purchasing a regular graphing calculator such as an HP 50g or TI-Nspire NX CAS, or something like Mathematica 8 for Students at the same price?

I'm considering buying a graphing calculator. Which one is good? Is the Texas Instruments Nspire CX CAS the best one on the market right now? I'm also looking at the HP 50g but I'm not bound to RPN so I'm fine with Algebraic calculation.

I'm trying to calculate relativistic photon energy shifts, and I have to use e^{\frac{x}{c^{2}}} However,since I'm dealing with the speed of light, the exponent becomes extremely small and my TI-84 gives me a nonsensical value. Could anyone recommend a more accurate calculator?

Homework Statement Find the exact value of: ∫-55 √25-x2 dx without using your calculator. (Hint: Consider the geometric significance of the definite integral.) Homework Equations integrate and find antiderivative and evaluate at A and B. The Attempt at a Solution ∫-55 √25-x2 dx...

I've been beating myself for selling my TI-89 2 years ago, it might have been able to do it. I am looking for an online calculator that can solve integral equations and differential equations. Any such exist?

Homework Statement Simplify 3√-27x^6 I'm very confused on how to evaluate what -27^(1/3) is without a calculator. I think I'm fine with the other steps. if someone could explain this to me I would really appreciate it. The Attempt at a Solution = 3√-27x^6 = (-27x^6)^(1/3) =...

Like many math newbies, complex numbers (or at least the idea of complex numbers) are a source of some confusion... but I've worked with them before and I'm reading through posts on PF that I hope will give me some sense of intuition about them. That said, there is one nagging question that I've...