Calculator Definition and 518 Threads

Can anyone shed any light on how this water powered calculator works please? http://www.thinkgeek.com/gadgets/electronic/7c17/ Thanks, Paul

I'm going nuts here and I can't figure this out. I have two complex vectors: A=(1+i)x + (1)y +(i)z B=(4-i)x +(0)y + (2-2i)z If I do the dot product of these on my calculator I get 1 + 7i, however when I do this by hand I keep getting 7 +5i. What am I doing wrong? When figuring this out by...

Hey there, I'm new to this forum, but I just wanted to let you know that I have put out a clebsch-gordan calculator that is a little bit better than the ones I've found out there so far, check it out. http://phys.csuchico.edu/C-G/ -Fish

e^{2x + 1} = 5 How can I solve this without a calculator?

Hi How do you graph absolute value equations on graphing calculator (TI83+)?

Hi I am trying to find the area inside the lemniscate r^2 = 2a^2 cos(2theta) a>0 I am having trouble graphing this in the calculator. I am in the polar mode. The a^2 is giving me problem. I am using TI 83 plus. Also i need the interval, for the above function...

What are Ulam #'s? A ulam #, if an only if it can be written uniquely as the sumof two distinct Ulam #'s. ? I need to make a list of the firts 20 Ulam #'s. I got the first 8. It's there any formanula or something easy to do it? How many Ulam number are thre? Prove answer EXTRA...

Ok, somehow, my graph does not show the x,y axis. I think there is no problem with my WINDOW... How can i fix this? WINDOW: Xmin=-10 Xmax=10 Xscl=1 Ymin=-10 Ymax=10 Yscl=1 Xres=1 https://www.physicsforums.com/attachment.php?attachmentid=5550&d=1131859881"

im trying to remember how to do some trig. first of all, how do you find cos^-1 (5/3) without using a calculator? 2nd, i need help proving this identity: 2sin^2(x) - cos (x) - 2 sin (x) + 1 = 0 3rd, how do you evaluate sin 165 (which is sin (11/12 pi)) again without using a...

Hi, this should be the last question for today :lol: Determine the number of solutions for the following system: y = -4log_{12} (x) y = 4 sin(x) Is there a way to do this without using a graphing calculator? Thank you very much!

I'm learning physics, and I'm reviewing over the trig part of the chapter. My professor does not allow us to use calculators. I'm looking at the inverse of the trig functions. What I don't understand is : it says that the reciprocal does not equal the inverse. like tan -1 does not equal 1/tan...

take any number, for example X and try and square it... first let Y = X rounded up the nearest power, not multiple, of 10 [ X - (Y - X) ] * Y + (Y - X)^2 = X^2 it should work every time... let X = 998 [ 998 - (1000 - 998) ] * 1000 + (1000 - 998)^2 [ 998 - 2 ] * 1000 + 2^2...

well, don't really know if it's physics or chemical... gas lighter than air, to be used in a balloon who can fly up by itself. I only know 3 types: helium, hydrogen, hot air Are there other, can be used in a ballon? And how can I calculate how much updrift the gas creates or better...

Why won't this work? :frown: ---------------------------------------- import javax.swing.JOptionPane ; public class FinalBalanceCalculator { public static void main(String args[]) { String input; String name; double b0; double rc; double ty; double ans; input...

I'm not exactly sure if this goes here, but it has a little to do with Academics. I am entering Senior year of HS and I am taking an AP Calc class. Since my TI-83 was stolen, I now have to invest once again into a calculator. As a pre-college student planning on taking many math/science classes...

Hi , I'm entering college this fall majoring in mechanical engineering and I need a graphing calculator. However , I am unsure of which one to buy. These calculators are quite costly so I want to be sure that I am getting the right one. I simply want a calculator that will be able to function...

At the university I'm taking my physics bachelor, only these calculators are allowed on exams: Casio FX-82 Hewlett-Packard HP-30 Texas Instruments TI-30 So which could you reccomend? Btw, aren't these calculators somewhat "archaic"? Also, is it common not being allowed to use...

I'm sorry if this topic appears to be in the wrong section, I was not sure what this would go under... if a moderator would be so kind as to move it to the correct sub-forum, I would be glad =) I'm going into Grade 12 this year, and will need a graphing calculator obviously not only for next...

Some of you are aware of the fact I have already prepared two chemical calculators (see signature). I am planning to extend the line of programs and I have several ideas about what could the next calculator do. However, before starting work I decided to do a quick poll: What type of...

I'm not sure where exactly to put this, but here goes, I am trying to upload a chemistry app to my HP 48gII calculator, i get it on the calc, but i don't know how to run the program. I am no IT guy, i just want to run the app. the program is called ChemLab.HP . I found the program @...

gooooooooooooooooooooooooooooood evening everybody, hows everything?? ok i just had a quick little question, how the heck do you use this kind of online graphing calculator?? its not quite a TI but i need somethin for my homework (havent gotten one of my own right now, well i had one but...

What would be the best way to check the result of implicit differentiation with a TI calculator?

hello. I was wanting to know how to raise a number to any power without using a calculator. More specifically, I was wanting to raise numbers to the .5 power, (and all the other roots, 1/2, 1/3, 1/4). How can this be done? <----------------------> My fellow 633|<5 :smile:

Hey... requested my professor to give me a few questions to enable me to improve my skills... am having problems solving them however and was hoping that you could guys could help me: Q1) Use a calculator to evaluate the following powers. Round the results to five decimal placeS. Each of...

How do u graph these without using a graphing calculator? a) f(x)=3sin2x b) f(x)=1+cosx

Can you give the EXACT number of bytes there are in 256 terabytes? If you can, show how you did it.

Hi everybody, I have given an equation to calculate the final Value (FV) of an investment as follows: FV= Principal*(1+{R/N})^{NT} Where: Principal = initial investment amount, R = annual interest rate, N = number of times compounding is performed per year; this can be quaterly (4...

Hi, Anygood graphing calculators on the web, that will work on Linux? I found this one GCalc Is there others that are worth trying? Thanks in advance!

b^x=y log_b(y)=x When you punch in log on your calculator, mathematically, how is it solving for x? For example, 3^x=81 log_3(81)=4 How is this being solved? Thanks

Which Electronic Calculator is best suitable for me ...studying MS in Mechanical Design Enginnering & working as a Design & Development Engi neer in an R & D firm... My hot areas of work are Mech anical Static & Dynamic Analysis of Strcutures(including Plate Analysis,Harmonic...

Does anyone know of a good, preferably flash or html-based antiderivative calculator? I'm on a Mac and can't run any windows executable file. https://www.symbolab.com/solver/antiderivative-calculator And if not, would someone please tell me the antiderivative of tan? [edit] I'll just give the...

Even calculator can't solve this... (8^2003+6^2003)/49=? Who can solve this?

How can i calculate 3^0.2 without using a calculator? We can write 3^4 as 3*3*3*3. Can 3^4.2 be written in the same way (without exponent)?

Find Equation On Graphing Calc Plz Help! I know how to graph the inverse on the t1 83 graphing calculator u press 2nd prog 8 y vars enter but Is there a way to find the eqn of the inverse after its graphed? HELP SOMEONE PLEASE THIS COULD MAKE MY LIFE SOOOO EASY PLZ PLZ PLZ HELP ME! :cry...

Does anyone know how to put absolute values in the t1-83 graphing calculator? I need to graph absolute value of x, the absolute value of x +2, and the absolute value of x-3

What does a Battery powered Calculator do when it's batteries run dry?..does it still perform calculations?

I have a TI graphing calculator and I'd like to graph the following equation,... x^3+y^3-3xy = 0 I'm not sure how to graph this on my TI I took the derivative of the above with respect to x,... 3x^2+3y^2\frac {dy}{dx}-3x\frac{dy}{dx}-3y=0 Which I solved as...

Hi, I was wondering, how would one solve the following equation without using a calculator. In other words, algebraically. lim (x + sqrt(x^2+5x)) x-> -infinity Thanks in advance

A pocket calculator is programmed but cannot think. I could provide the same answers but I am not programmed. How could one show the difference between these two situations?

i don't understand how to find the exact answer to log base 4 64 without using a calculator. can anyone help?my teacher gave examples but they are on bad photocopies sarah

I have a couple questions about some problems on a take-home quiz that I got (no calculator allowed) Bear with me, this post is long... 1. The radius (r) of a sphere is increasing at a constant rate of 0.04 cm/s. (Note: The volume of a sphere with radius r is V=4/3pir³ a) At the time when...

hello, I'm new! well anyways, I'm having trouble with this assignment. the assignment is to, on my TI-83 plus graphing calculator, create an illustration as a graph. it doesn't have to be much, it could be a person, or a flower, pretty much anything. the thing is, I'm not too good at...

Hey, I've been writing programs on my calculator for math and physics ever since I found out that it was possible. I have about 10 now in the last 3 days, putting in the quadratic formula and other formulas, like finding torque or angular momentum. I was wondering if anybody had some pretty...

hi, How do u find the e^6 or the exponential of 6 or -6 or any number in a scientific calculator? Thanks skan

I'm having some trouble solving inequalities with the TI-89. Let's say that I want to solve x^2<1 The answer should be <-1,1>, if I type in solve(x^2<1,x), but that's not what I get. It only returns the inequality itself just as I typed in. What's wrong??

Is there anyway to do this without calculatior and without graphing it? lim (x-3)/(x-2) x->2+

I need some help with these two questions: tan2A=cot40(40degrees) and cosec^2x=1

I've noticed what it seems to be an error in Ned Wright's calculator http://www.astro.ucla.edu/~wright/CosmoCalc.html First off, I want to present a beautiful theorem that relates 3 of the more often used distances in astronomy. Is called Etherington reciprocity theorem (Etherington,1933)...

I was wondering what the best calculator to get would be? I've just started a 4 years masters in mathematics and I was hoping to get something that would get me through the whole 4 years (scientific got me through 5 years of high school and a basic graphics calc got me through 2 years of...

How can you prove that: e^pi > pi^e, without using a calculator. (all you know is the values for e and pi.)