Calculator Definition and 511 Threads

Hi there I'm doing a double degree in physics and mech engineering. Up until now, I've been using my good old Ti-83 and has served me well but me thinks it may be time to maybe invest in a good calculator for the future. I would prefer to stay with the TI brand since I'm very...

To be honest, this is straight up advertising, but I think it'll be helpful to a lot of people. My friend has made an Uncertainty calculator app for the iPhone (android coming soon), and it has saved me tons of time. So I just want to support him. Here are the links and screen shots...

Gday, I'm encountering a rounding error on my Ti-nspire CAS and was wondering if this approximation is acceptable. For the function f(x) = (x^2 +1)sin(x), I obtained (by hand, confirmed with CAS) a derivitive of f'(x) = 2xsinx + (x^2 + 1)cos(x). Calculating the minima of f(x) with the CAS...

I'm in the 11th grade, and a lot of problems I'm doing now require me to have a graphic calculator handy, the most basic ones run up 150$ easily, I am told that after this course when i take calculus its mandatory, although i can do all these problems manually, should i bother with it or people...

This is actually just a simple calculator question. See, according to this paper I attached, (2sin{pi/2})^5 equals 32. When I plug it into the calculator, I get 4.95 x 10^-7 Just wonder what's wrong with this picture..?

[b]1.We have an assignment, we need to construct the circuit of calculator using 74147 IC . Can anybody help me on how to hold and shift the data, and also how to have a 0 display. Homework Equations The Attempt at a Solution

Homework Statement A school has three clubs, and each student is required to belong to exactly one club. One year the students switched club membership as follows: Club A. 1/5 remain in A, 2/5 switch to B, and 2/5 switch to C. Club B. 1/4 remain in B, 1/2 switch to A, and 1/4 switch to...

Does anyone know of a free scientific calculator for the PC? The one that comes with W7 is crap and I'm tired of using MATLAB or wolframalpha for the most basic of calculations.

Homework Statement I have an assignment to write a program for calculating the sine (and various other functions) using the method of truncated infinite series using DO statements. The DO statement is supposed to run until the difference between the current and last iterations are less than...

Ok, Here is the assignment: Develop a mortgage payment calculator. Design a GUI to enter price of home, down payment, interest rate. Your bank only offers 10, 15, and 30 year mortgages. Use grouped radio buttons to select between 10, 15, or 30 year mortgage. Monthly payment should be...

Question: Why does my calculator state the limit of the following function is 1, but my calculations state it does not exist? There's a gap in the graph between -1 and 0. I noticed that there are a few points in that section that do generate real values which appear to move towards 1, but...

I have this TI-30Xa calculator that is one of the most unreliable things I own. When I first got it, I took it out of the package and turned it on and messed with it and then put it down. I show up to school to use it on a test and it's not working. When I get home I had figured out that...

Beaconaut APICalc 2 just released on Jan.18, 2011, which is an arbitrary-precision integer calculator for bignum arithmetic, cryptography analysis and number theory research... http://www.beaconaut.com/forums/default.aspx?g=posts&t=13"

My mom has a Texas Instruments TI-36 Solar calculator. A few days ago I found that there are functions for calculating combinations and permutations. The trouble is I can't seem to figure out how to use them.

I thouht about derivatives of both sides. But it leaves me with a negative number inside ln... I can't think of any way to solve it without a calculator help?

Hi guys. I am mechanical engineering undergraduate and we have a website. Now we want to put up an interactive calculator on our website. So we are trying JavaScript. Though we tried writing a code for our calculator it didn't work. At this time we're getting confused because of level of...

I use a Casio fx-991MS calculator. I observed this strange thing during some calculations. Setting up the calculator in radian mode, I found out the sines of various angles (multiples of π) display showed 0 for lower values. However when I entered angles from 1201π onwards, the answers were...

Homework Statement okay so I am doing a graphing calculator project where i have to create some kind of scene, using a ti 84+, and so far i have created a boat and waves, and i can't seem to figure out how to make a small fish (supposed to be in quadrant 3) and also a flag (for the boat) and...

Hello. I'm currently making (or attempting to make...) a mathematical model based around mutation in a hypothetical organism (that is, one in which all the mutation rates and genome sizes are known). I am currently graphing a particular feature of this model, involving mutation rates, but I...

Hi all, I am studying to be an electrical engineer and I have a C programming course that all of a sudden took a massive jump..last week we were writing single For statements and things of that manner and now he assigned a program that's just got my completely stumped, I thought I was...

Homework Statement a right triangle. hypotenuse is 10, the opposite is 8, and the adjacent is 6 Sine .6 Cosine .8 Tangent .75 i need to find angle A (aka Alpha in the problem) With out using a graphing or scientific calculator. Homework Equations i was told to use...

Hi all How find the 3 value of x by using Calculator u = 4x^3 - 4x = 0 I know this good way to solve iy 4x(x^2-1) = 0 X = 1 or X = -1 or X = 1 but I want a way bu useing a Calculator to find the 3 value of x plese help me .

I wasn't sure where to lost this thread so I decided to put it in general discussion. So anyway, on my TI-84 graphing calculator I have been having this weird problem, once in a while a setting will change on its own( not sure how) and then the calculator would stop letting me graph...

How can you find, say, sin(41.3°) without using a calculator? Or maybe a better question is: How does a calculator find that value when you punch it in? Also, what about arcsin, arccos, etc... How does a calculator find those values?

I am trying to develop a btu calculator for my solar thermal water heater. I would eventually like to use labview to do the acquisition. I have an internal heat exchanger and know the temperature before and after it enters the exchanger. I have a flow meter w/ a pulse output. What would the...

Think this question is more of a physics than math question. Anyways I am trying to figure out how to make a calculator to figure out what temperature something is at based on the ohm reading I get. I have several readings to go by but I think doing it exponentially is the wrong way to go...

how would i plug this into the calculator? to find the sum? step by step process? thankss! 4 ∑ 2 cos (π/k) k = 1 i tried this site http://mathbits.com/mathbits/tisection/Algebra2/summation.htm and i got a different answer...so i just need help with the set up on a T.I calc.

Hi all, I am trying to find a nice back-of-the-envelope way to numerically-calculate nasty things like square roots and stuff. For instance: \sqrt {4.51} = ? I tried to use a linearization: \sqrt x = \sqrt {n + \varepsilon } = \sqrt {\left[ {{\rm{integer}}} \right] + \left[ {{\rm{decimal...

Homework Statement Use a calculator to estimate any extrema of this function: f(x)=5x^3-30x^2+45x+5(sqrt(x)) Homework Equations The Attempt at a Solution I don't know how to find it using a calculator. f'(x)= 15x^2-60x+45+(5/2)x^(-1/2)

Homework Statement Use a graphing utility to graph the conic. Determine the angle through which the axis are rotated. x^2+xy+y^2=10 Homework Equations \cot2\theta=\frac{A-C}{B} x=x'\cos\theta-y'\sin\theta y=x'\sin\theta+y'\cos\theta The Attempt at a Solution I can find the angle of rotation...

My eyes are on this https://www.amazon.com/gp/product/B000GTPRPS/?tag=pfamazon01-20, Do you think it is good?

I was doing this problem about optimization and I derived it to: R' = (1-lnx)/x2 (This was the right derivative by the way as the maximum on the R function was the same answer as when R' = 0)Anyways as R' = 0 when stationary points occur: 0 = (1-lnx)/x2 I was wondering whether it was...

My son needs one for school, my friend who is a government scientist said Casio, however the last Casio watch I owned probably lost 5 minutes a day how could I possibly trust them to make an advanced calculating device?

I wasn't sure where to post this, as it's just a general question rather than anything actually math related.. I'm starting pre-calc this summer, excellerated, and going into calc 1 at the second half of the summer. This is to get me ready for starting my Physics major in the fall. I'm a...

I'm currently taking a high-school pre-calculus class and next year I'm going to be taking AP Calculus and Physics I. I plan to major in Physics in college and I'm looking for a calculator that will get me through all of that. I need one that's approved for the SAT, ACT, AP, and is powerful...

Homework Statement Alabama Instruments Company has set up a production line to manufacture a new calculator. The rate of production of these calculators after t weeks is (dx/dt)=4,500[1-130/(t+9)^2] calculators per week. Production approaches 4,500 per week as time goes on, but the intial...

I've been using my calculator to graph a few functions. When I go the plot function menu and add a new function at this point [Y7(X)=] will appear. If I press [Choos] I will be able to select previous functions that I have entered and graphed. I want to erase these functions, so that when I...

Hi, I am an engineering student that loves writing programs for my ti calculators. I am currently using a texas instruments voyage 200, I love the screen and the qwerty keyboard. But I KEEP running into limitations with these things. I am approaching the point where calculations are...

My old trusty scientific calculator only has one line display and most of my calculations seem to really a need an extra line or two. And I use the "constants" feature a lot. Anyone recommend a solid physics calculator with a robust display and "constants" (c, h-bar,Bohr radius, epsilon0, alpha...

This is not necessarily a math question, but I have a problem with a TI-89 calculator. Calculating something with pi doesn't give me a decimal answer. For example, if I put in 2*pi, it will just give an answer of 2pi instead of 6.28. How do I fix this?

Calculator Ipnuts: DAL vs. RPN vs. CAS Hi all, I'm just wondering what calculator input methods are commonly used while learning advanced maths such as engineering/scientific maths. I have just got the hp i41cx+ iPhone application, and while I can appreciate the advantages RPN input, I...

Anybody knows one?

∆Eastings + 262.575 ∆Northings + 929.573 Bearing = not an idea how to work it out Distance = Pol(∆Northing,∆Easting)= displays distance Please help, thanks!

If i connect 76 solar panels (3v each) (that are found in calculators) together can i generate voltage of about 230v DC? if i connect this voltage to a GEYSER of 220v-240v AC does the GEYSER work

Homework Statement In my math class, we are not permitted to use a calculator. I am currently reviewing for a test and came across a small problem. Perform the following operation using the Euler (polar) form for the complex numbers involved. (1-3i)/i Homework Equations The...

Hi Do we need to convert the system of calculator to red in like this queation

Homework Statement I'm wondering how you would find values of sin, cos, tan, sec, csc, and cot without a calculator. I don't have a specific problem but how would you solve things like tan 45 degrees, sec 30 degrees, and cos -30 degrees? 2. Relevant info I have the values of sin and...

im a senior in high school taking ap calculus, I've done regressions here and there with the calculator but i was wondering how do do it without the calculator, i obviously know how to get a linear equation out of 2 points, but how is it done with more points and higher degrees? i understand...

I do not have a calculator that does matrix stuff that would be great for my classes this semester. I don't want to spend $100+ on a graphing calculator since I use MATLAB at home strictly now. I am looking to solve simultaneous equations, matrix operations like det,eigen,mult,...etc Any...

Hi, I'm barely getting College Algebra. I'm at the point where I need a hint about 1/3 of the time. I have TI84+ calculator and was told I can't use the TI89 or HP50g on exams but CAN use them on homework. Do either, or preferable the HP50g, work out typical CA problems such as factoring in a...