Calculator Definition and 518 Threads

Curious if anyone has found any good iphone calculator apps? Anything good for graphing?

Hi. Homework Statement I'm solving the definite integral 4π∫{0,3/2}(x^3)dx For some reason I get a different answer solving by hand and using my TI-89 than I do when I use an online calculator or my TI-36X Pro. I have to use the TI-36X Pro to take my Engineering FE exam in 2 & 1/2...

Homework Statement Uhmm i just started this project where i have to make a picture using functions on a graphing calcutator I am doing a kitty kat so far I am stuck on two things once is making a sideways elipse inside the eye so the cat looks more realistic another is getting rid of the lines...

Homework Statement To save money you put $3000 at the end of each year in an annuity that pays 6.8% compounded annually. Use the formula for the value of an annuity. The Given Formula: A=P[(1+(r/n)nt)-1] ______________ (r/n) How much would be saved at the end of six years...

For sin(4pi), my calculator gives -2^-13. Obviously, that is really close to the correct value of 0, but it just says 0 for ANY other multiple of pi I've tried. Weird right? TI-83 plus.. common calculator. Anyone have issues like this?

In the EL-520X, where is the function to find the greatest common factor or the lowest common multiple? In an older version of Sharp, I could find it, but for this one I can't. Thanks...

Calculate the following integral: $$ \int_a^b\frac{dx}{\sqrt{(x-a)(b-x)}} $$

Homework Statement what is sec(pi/4) what is sec(0) The Attempt at a Solution First let me make sure that cos^-1, acos and sec, they are all the same right? I put in cos^-1(pi/4) in my calculator and the answer I get is .667, which I think is the same as sec (pi/4). The book...

Homework Statement Find the exact value of the following expression. \sqrt[3]{10+6\sqrt{3}}+\sqrt[3]{10-6\sqrt{3}} Homework Equations The Attempt at a Solution Don't know where to start. I guess we can factor out a 21/3 but I don't see how that would help. Any clues? Perhaps some factoring...

(Not sure where to post this, so please feel free to relocate if needed) I am hoping someone can give me some advice on a good calculator for my Calculus class. I am currently using my trusty TI-83+ as my go to device, but my instructor will not let us use any graphing utilities on the test...

I tried squaring both sides but can't seem to simplify it. Any ideas on how this can be solved? Thanks! Edit: For those who are interested, I have attached the question that has prompted me to solve this system of equations.

Hi i want to buy a calculator . What model is the best? Is there anyone that supports a big variety of electrical and computer engineering programs? I was thinking about fx-9860gii SD (because of nyquist , bode etc), is it a good choice ? my badget is up to 150 euros thanks in advance

I had no idea where to post this. Anyways, I want to buy a graphing calculator. I am deciding between a Ti-89 Titanium and a Ti-Nspire CX. Or, is there another calculator you suggest? Right now I have a Ti-30XS, and I like the kind of logic used to enter my math into that. I don't like...

Homework Statement sinx=-1/2 how do I find x without using a calculator? Homework Equations The Attempt at a Solution I really don't have any idea.

Projectile motion air resistance calculator - tutorial?? I am not familiar with the terms/words of physics in English, but I hope you can excuse me. I need a tutorial for how to calculate the air resistance in a projectile motion. I want to do it with my calculator and that's why I came...

Is it possible to use flip-flips to store numbers inputted, for example if i input 5, current will go to 4x nand flip flip and store 0101 and the next digit to be calculated, any ideas on this?

I want to create a histogram that shows the averages of 5000 samples of 500 dice each. How do I do this?

Hi, I am toying around with writing a significant figures calculator written in Python. According to NIST and other sites, the preferred way for working with uncertainty is to report the uncertain digits in concise form: eg 11234(13)kg would be 11,234kg+/-13kg with 13 being 1 standard...

Homework Statement None of the forums seemed to fit this but this seemed like the best one. I've been having a bit of an unconventional problem in my AP physics class. When I'm taking a test I am able to find the answer analytically but I run into trouble when i try to solve the answer...

1) cos 60o = vx0 / 50 => vx0 = 50.cos 60o = ? 2) sin 60o = vy0 / 50 => vy0 = 50.sin 60o = ? OK so I use my calculator for 1) and I insert in my calculator cos 50x60 = 42.42 but this is not the right answer because the answer is 25 m/s because the answers...

Straightforward question for anyone who knows how calculators work.

Hello. I have the distance formula programmed into my calculator and I searched for a distance formula that includes the z-axis but I couldn't find any. Does anyone know how to make such a program for the TI-84? Thank you.

In maths in school we are starting to do a lot of problems involving integral and differential calculus as well as general algebra. The problem is while I can see the correct method of going about obtaining a solution it takes me a long time to get there as the integration and stuff takes up...

Hi, I'm looking at a few models but I'm having a hard job seeing if any/all of them have a sort of Physics equation solver. For example, laws of motion, a calculator that could tell me for a set of given values what the value of s is when t=2. Or, say, for a given velocity curve - show the...

x^3-3x^2-5x-1 ?? x^3-3x^2-5x-1 apparently the book solved it by dividing it by -1 with synthetic division. i don't like synthetic division and tried to use -x with regular division. it did not work out. how does one solve this without using a calculator? please explain why...

I have no idea what wrong my cods when I press = button of my calculator nothing happens. can someone help me to fix my codes thanks. import java.util.Stack; import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.math.*; import java.util.Vector...

Hi! This is a great forum and I've been using it for help for a while so thought I would finally sign up. Anyway my group is making a 4 bit binary calculator for a course in my second semester and we're am having a few issues. The main restriction is that we can only use basic gates to...

Homework Statement Just as a background this is my first time ever learning to program. I am in an engineering C++ class. I had to write a program that took in ten random numbers and then found the mean median and mode. I got the first two and was able to figure out how to sort correctly. But...

Simply cannot get my calculator to give me the correct answer!? Homework Statement I'm going through a worked example I did in a tutorial and cannot get the same answer we did in class with my calc!? Homework Equations Damping ratio = the square root of E2 / 4∏2 n2 E2 Where...

How does a calculator based ranger, or cbr, work? like the motion detector, with the TI- 83 calculator and computer. Like, explain the ultrasonic waves and sound stuff DUMBED DOWN please (: Pleaseee reply ASAP, need it for tmrw! PLEAASSEE!

How do you do stuff like sin(pi/4) in your head or sin(1) or sec(pi(x))? Thanks for your help. I'm in Calc II and fully understand the calculus but my trig foundation from high school isn't the best.

The Limx-->infinity of the function Square rt(5x^4+2x) / (x^2) Note* The square root is only in the numerator for the expression (5x^4+2x) I have tried multiplying by the complex conjugate but I am not sure if this is the correct way to do it. I did sqrt(5x^4-2x) over itself and got...

Homework Statement Write a C++ code factorial.cc that calculates the factorial of an integer by direct multiplication. Start with your code in exercise (3), and modify it so that it gets "n" from the user and prints out n! = 1*2*3*...*(n-1)*n. To do this, use a "for" loop: int nfac...

[b]1. I have two calculators. including the Texas inspire cx. I can't make either of them work reliably on trig questions. I have an exam sunday and i need to be sure how to use my inspire. [b]2. Summation: [50][0.5] + [50][0.07cos35] + [100][0.1cos35] = 13.55 [b]3. Now i got this formula off my...

This book says that sin of 45 degrees is .70 My calculator which is a TI 83 says it's .85, plus this website also says it's .85 http://www.coolmath.com/graphit/ Who is right?

Which calculator do you think is suitable? I want Complex Matrix Solving and other aspescts of electrical engineering that requires handling complex numbers such as hyperbolic functions with complex arguments. Further more, Entering User Program (preferably through a computer) and a graphic...

What's your favorite calculator and why?

It only seems to have been mentioned a couple of times in passing, but Alan Eliasen's Frink calculator and programming language (https://frinklang.org/) makes unit conversions simple (converting to SI internally then back to any desired target units. User-defined units may be added, too.) Very...

Homework Statement My TI-84 plus is messed up, is there any way to reset the settings without erasing my programs? edit: my graphing funciton only graphs one graph even though I imputed two. There is this weird black arrow and a rectangle in all of my YnThe Attempt at a Solution

Hi guys, new user here, I couldn't figure out which subforum would be suited best for this, so the mods may feel free to move this post around. (edit: should have posted in the Math&Science Learning Materials subform... mods, can you move this please?) I just wanted to make you guys aware...

Homework Statement we have to create a picture in the graphing calculater, rules to the project 1window must be set at X[-20.7,24.7] and Y[-13,17] 2picture must be centered in this window 3no fewer then 20 program lines. horizontal and vertical lines don't count in the 20 4no programs within...

Does anyone know a good way to check if a given set of vectors (assume we just know we have a set, not their values) is linearly dependent or linearly independent without a calculator? Ex: Given a set of n-dimensional vectors, say, vector1, vector2, and vector3, how would one determine if these...

I am making my way through a Precalculus text. It is not for a class, just independent study. I am doing every problem in the book. So far, I have done all of the problems without a calculator to better my arithmetic skills. This is frequently time consuming because the book isn't giving me...

Hello, EureKalc 3 is an environment for numeric and symbolic calculation, dedicated to solving problems in the field of physics and engineering... It's a free and opensource MathCad like application running on Mac OSX. I developed it primarily for solving physics problems at the level of...

I need an algorithm for developing a calculator application. When I googled , I got results that perform the ordinary push and pop operations . I need the complete algorithm that can be useful to code a calculator application in GUI.

Ok... This is a simple question that I'm having a hard time with. I'm forgetting something that I learned and I want to clear it up... I know that a 120/208 3 phase system has 3 hot leads that are 120 degrees out of phase with each other with respect to the neutral. If you multiply 120 X...

Hey, I'm having trouble graphing polar equations in my TI-89. I just bought it and still don't understand how it works. For example I have r = 5 + 5 sin(theta). It's suppose to look like a upside apple thing (kind of). But I don't know how to get the graph to show up. I know I'm doing...

I am currently a junior in high school. I have a TI-84 plus silver edition. My parents are letting me give my old calculator, the TI-84, to my sister and let me buy a new calculator. What would be the best calculator to get? I am planning to be an engineer and need a calculator that is approved...

This is more of a calculator issue than the physics part. Below is just an example from my textbook. Our professor expects us to be able to plug an integral like this into our calculator to get the answer. although every problem I have tried like this just pops out another integral on the...

I need to get a graphing calculator but I am not sure which one suits me best. I need it for graphing and possibly some more advanced functions. I checked out the prices and the TI-89 is somewhat expensive. It seems a little "hyped" than the other older models. Does the TI-85 have everything the...