Calculator Definition and 511 Threads

Hello, I have a question. I have to create a calculator for grades. I need to make a menu and the student picks either the lab or the lecture which I didn't have a problem with. I also didn't have a problem with the set up of the questions or the average calculations. What I am stuck on is: I...

I'm getting pretty discouraged because I'm a straight A engineering student, but this semester I'm getting bad grades because I'm plugging things into my calculator wrong. I study a ton, and I definitely know the material, I just plug things into my calculator wrong and get the wrong answer. In...

Trying to complete some homework help I got a bit stuck on an elementary or common problem that was always a bit difficult. I have a function f(x) and just want to plot log f(x) against log x. This is common in chemistry and biochemistry. It should have been easy. :redface: I have picked up...

OK, my trusty 25 year old 32S II is finally showing its age - a row of buttons on the right side of the keyboard seem to have some intermittent connectivity problem. So, I figure it is time to upgrade. I want RPN - algebraic entry is irrelevant to me. The choices seem to be either the 35S or...

I have seen books and videos that claim to teach you how to become a human calculator. does this stuff really work? if it does can you recommend a good book or video ?

I want to do GCSE Maths Higher this year and i have a selection of four calculators: Casio FX-85GT HP 20S HP 48G HP 50g (my dad is a fan of HP) I was wondering whether I needed to get another, slightly more up-to-date one of just use one of the ones i have already got. Could anybody help?

#define _CRT_SECURE_NO_DEPRECATE #include <stdio.h> int main() { int A; int B; printf("This is a simple boolean truth value calculator.\n\n"); printf("Please input the boolean value for statement A\n\n\n"); scanf("%d", &A); printf("Press enter to continue\n\n\n"); getchar()...

So i graduated with good gpa in a civil engineering program in a school in Québec. Problem is, at that said school, programmable calculators were allowed and we abused it. Every single integrals or derivatives or complex number manipulation was solved by it and now i transferred to another...

Homework Statement A) use sigma notation and calculate sum as far as you wish (set your own endpoint)(1/2) + (1/4) + (1/8) + (1/16)...B) this is a personal problem because I want to know how to calculate the sums with e.g. sigma notation, with a calculator. Never having done this before...

Hello! Some time ago I asked the admins for permission to post a link to my Logic Calculator app for android. They allowed me to post in this section so, here I am! I am a software engineering student from Buenos Aires and in my freshman year I started to develop this app as a project for a...

Hi, When I type into my calculator 13.6/(1.000000001) the calculator returns the answer 13.59999999 Then, when I type 13.6/(1.0000000001) the calculator returns the answer 13.6. Obviously, both 13.6/(1.0000000001) and 13.6/1 cannot equal 13.6, so what's the deal with the calculator...

hi everyone i hope you are fine . is it allow to use graphing calculator in ipho physics olympiad

A friend showed this to me today, and I downloaded it and am loving it. The HP42 was my favorite calculator, and after my latest one died many years ago, I hadn't been able to find any to buy (at a reasonable price). But now there is a free app that you can download to your phone that brings...

I just had a quick question. One problem says, "about 68% of the data will fall between what values?" Will I use the binompdf or normalcdf command on the TI-83 calculator? I can't remember. Thanks!

Hi all! I'm really interested in the physical interpretation of the Riemann and metric tensors. Is there any program that let's you type in a Riemann or metric tensor (or even better, an Einstein tensor) and then gives you an image of how the space would look (i.e. the curved grid lines)? Thanks!

Hi Anyone know of an online asymmetric differential stripline impedance calculator? I already have the Saturn pcb design tool kit. I just want to find a second one to cross check the result. My experience is I have seen two calculators gave different results. Thanks

Without the help of calculator, evaluate $$\frac{(-\sqrt{6}+\sqrt{7}+\sqrt{8})^4}{4(\sqrt{7}-\sqrt{6})(\sqrt{8}-\sqrt{6})}+\frac{(\sqrt{6}-\sqrt{7}+\sqrt{8})^4}{4(\sqrt{6}-\sqrt{7})(\sqrt{8}-\sqrt{7})}+\frac{(\sqrt{6}+\sqrt{7}-\sqrt{8})^4}{4(\sqrt{6}-\sqrt{8})(\sqrt{7}-\sqrt{8})}$$.

Homework Statement Hello, I have to use the HP 10s calculator at my university, I have been used to my modern casio for the last 4 years but I have a problem. The square root symbol when pressed does not allow for continual calculation, such as when I am using the quadratic formula. It seems to...

Is there a programming editor on the HP 50g (like the TI programming systems)? I have been unable to find any information on this, so any help would be appreciated.

Suppose you have 8-1/3 and want a precise value for it. How would you go about calculating this on a regular scientific calculator. I punched in: 8, then the exponent button, then 1, then negative, then division, and finally 3. The calculator reads "error."

I am no programmer but I want to learn for personal development. so physicsy type guys recommended Python. I downloaded it and have been playing. my goals for programming are three; 1. learn to code just for fun 2. do calculations and numerical calculations 3. input data from transducers...

Hey guys, I am developing an program for calculation of reactions in a "4 point support beam". The problem is that this structure is Statically indeterminate and hence requires some other method. Support on any level is appreciated, especially from Civil Engineers. I will keep on posting...

I'm supposed to make a simple logic calculator based on the following requirements: 1. The user can use either capital or lower case 'T' and 'F' in their expression. 2. Use either a ';' or '=' to indicate the expression should be evaluated immediately. 3. The program should not exit when it...

This question might be out of the scope of this forum but, Assume an object (lets say cube) rests on an even floor that at all points is vibrating vertically at the same frequency at all times. (a platform going up and down) The floor is vibrating vertically at a FIXED displacement. How can i...

Does anyone know any good non-programmable calculators? I have a sharp el-520w right now Do any of them solve things like indefinite integrals?

Hi everyone. i think this is my last thread on PF:frown:! because i am too busy,anyway, 4 months ago i posted a thread named it finding cube roots without using calculator and now i want to know if there is a way or method to find sin and cos without using calculator. And thanks to all who...

I'm teaching first-semester calculus right now, and I'm noticing that a lot of my students are using the online graphing calculator at desmos.com. (I think this sort of thing is like nuclear power, it can be used for good or for evil.) I played with the desmos app, and although it seems nice in...

Homework Statement Calculate sin75 without calculator![/B]Homework EquationsThe Attempt at a Solution I constructed a triangle with angles 15, 75 and 90 then I defined sin75 by the sides. In a previous exercise the task was the same but with tg15 and I used the result in this execise too. I...

How do I find ##2^{1.2}## without using calculator?

Hello all, Is there a function that can be used on a calculator to add a comma after each third number. e.g. 100,000,000 It would help me read larger numbers quickly.

Hello Everyone. I'm returning to college to earn a degree in physics 15 years after getting a BA in English. I took calculus almost 20 years ago and used a Ti 85. I've noticed that some graphing calculators have CAS integrated, which I've never used, and I'm keen to get one for my physics and...

The problem I have the triangle ABC where ∠C is 90°. The side AC is ## \sqrt{3} \ cm ## and the side BC is 1 cm. What is ∠A (α)? The attempt $$tan(a) = \frac{1}{\sqrt{3}}$$ The problem is that I have to calculate the exact value of α without any calculator. I tried to calculate the third...

I have been a real nerd for a long time, and I have a decent collection of graphing calculators. My collection includes: TI-82 TI-83 TI-83 Plus TI-Nspire CAS Casio fx-9750 My favorite calculator is probably the TI-82 just because it has a real nice 80s look to it and runs great. I have...

I'm working through some examples in a textbook but i am unable to get the desired answer on my calculator, i keep getting math error and various other results which are not the answer I'm looking for. What i have is: √ 62.9∠88.2 / 0.00165∠72.3 Please could someone tell me what answer you get...

Well the texas instruments ti-84 calculator is my favorite toy. I use it for anything I can from getting a girl to put her phone number in my calculator to programming. Is there a way to somehow add an external circuit that can make the ti-84 send text messages. I bet there would have to be a...

HI EVERYONE I was thinking if we could find a cube root without using a calculator. square root was easy to find without calculator,but cube root i have no idea to find it. any help?? for example(cube root of 3 or 2)

Let $f(x)= x^{11}-16x^{10}+16x^9-16x^8+16x^7-16x^6+16x^5-16x^4+16x^3-16x^2+16x-1$. Evaluate $f(15)$ without using the calculator.

DOo somebody know how to import text to casio fx-cg 20?

Before I say, I just want to mention that the Danish words for 15 and 18 are femten and atten Atten sounds a bit like the English word "eighteen". So that is where we get our metric prefixes femto- for 10-15 and atto- for 10-18. When you do cosmology the most common quantity, or one of the...

There are a lot of books and videos that can teach you how to do math in your head. does any of it really work. Is there a certain book or video that you would recomend

Homework Statement Calculate the mean and standard deviation for the random variable X which equals the sum of the dots facing upward when two standard six-sided dice are rolled. The Attempt at a Solution In List 1, I entered all the possible values of the random variable X...

What is the best non-programmable scientific calculator with a scrollable (or otherwise easily accessible) memory of past calculations? I would like to find one where the full decimal/standard answers from past calculations can easily be selected and used for new calculations. I already know...

I'm tasked with findings he solutions to a particular tangent equation, and when I did it before with sine it was just a matter of plugging in the equation to the calculator, then getting all the zeros. Since it is tangent now and not sine, do I do something special? Is it no longer the x value...

Homework Statement It's a worksheet with questions like : A pelican flying along a horizontal path drops a fish from a height of 5.4 m. The fish travels 8.0 m horizontally before it hits the water below. What is the pelican's initial speed? Homework EquationsThe Attempt at a Solution [/B] So...

http://deathdate.info/s/death my death date according to this site is January 22 2054

You have a malfunctioning calculator that cannot perform multiplication. However, it can add, subtract, and compute the reciprocal $\frac{1}{x}$ of any number $x$. Can you nevertheless use this defective calculator to multiply numbers?

I've started my trig class and this is the first time in my math career I've actually had to pay attention to what mode my calculator is in. So my question is, is there a rule for it? Will it be obvious to the problem?

I was wondering if it's possible to use the TI89 Titanium's built-in solver with programs. More specifically, for compressible flow problems, I'd like to calculate mach number based on area ratio, specify whether the flow is subsonic or supersonic, then do something with the corresponding...

The trend in commoly available cheap scientific calculators is that when you want to calculate a function like sin( sqrt(2)/5) , the most convenient thing to do is press the sin() key first. Twenty years ago (or less) when using the "algebraic" calculator interface (on some fairly...

Hi I'm feeling very pathetic at the moment...! Can anyone tell me how to work out the following equation on a calculator? Thanks! PLEASE NOTE THE "6" is the power of 6 :-) So, here's the equation... X = 5220 (1.05) 6