Calculator Definition and 532 Threads

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

Evaluate the expression $(2^{2^{2014}}+1)(2^{2^{2013}}+1)\cdots(2^{2^2}+1)(2^{2^1}+1)(2^{2^0}+1)+1$

How prove that $2^{2^{\sqrt3}}>10$ without a calculator?

In calculator, when we press = more than one times, why answer will get change? yesterday, i pressed 1+1 then i press = it gives 2, again i press = it gives 3, why if answer is 2 why it is showing 3, all calculators like this showing, is this manufacturing error?

Hopefully everyone's heard of this by now, but for those who haven't, there's an excellent interactive online graphing calculator offered by Desmos: https://www.desmos.com/calculator

Hello, I'm enrolled in College in the civil engineering program and am looking for guidance with calculating strength of steel square tubing. We are making a project that has parameters. 1- Must be made of steel 2- 4"x6"x36" is maximum OD of section. 3- 14 lbs is maximum weight 4- the load...

Here's a cool online thermal expansion calculator. It's OK and might even lead to other interesting websites. http://www.engineeringtoolbox.com/linear-thermal-expansion-d_1379.html

Homework Statement y= -2log3(x-3) -1 Homework Equations I am using a SHARP EL-546W scientific calculator, and I do not know what steps to take in order to find a point given an x value. i.e. if x=3, then y=6. I cannot seem to get 6 on my own and I have tried a wide variety of methods and...

Hello, I do a lot math and physics work, (predominantly advanced fundamental theories), and have consistently been hindered by a particular issue when it comes to a few of my defined functions. I feel like it would be a kind of "order of execution" issue with a simple solution, but though I've...

Homework Statement w!/(w-n)! = number of ways of distributing n* distinguishable particles in w distinguishable states w = number of distinguishable states n = number of indistinguishable particles How many ways are there to put 2 particles in 100 boxes, with no particles sharing a box...

I've recently started working on a wind load calculator. Notice the complexity when overhangs are added to the roof. These load diagrams show the Envelope Procedure for a Gable Roof: Load Case A: Load Case B: If torsional load cases are required then another Load Case A and B...

Solving for Sin with no calculator + additional questions Sinθ=opp/hyp Sinθ=5/3 Sinθ=1.6 I know the answer is 35.87°. I would like to convert 1.6 to 35.87° but am unsure how.

Maybe I'm plugging my website but I just finished writing a versatile cylinder calculator. If you know two variables (Volume Area Radius Height), it calculates the other two. http://www.1728.org/diam.htm It was a little tricky deriving the formulas but I'm glad I did. (Yes, I know if you...

New here and this is my first post. I've developed an online psychrometric calculator and I believe it is now working perfectly. I would like someone or anyone who has expertise in this area to check my work. The link is...

I've recently started doing a lot more residential structural engineering for local clients and the first thing that I realized was that I was lacking a good beam calculator. I do have a number of spreadsheet calculators but I've found them hard to program and once I do have them programmed...

Here's the problem: Find the general solution of x*dy/dx+2y=10x^2. How do I find the answer for this problem on Ti-89 calculator? What's the input?

What in your opinion is the best(or even just your favourite) calculator in the world? And why?

I was wondering how that could be done. I tried 0,2 ---> 1/5, then 167 ^(1/5) , which should lead to 5√167 (fifth root of 167) , but I can't seem to move on from there

Does anyone know of an online calculator that can form an equation of a curve with complex values and lots parameters? An advanced curve fitting calculator Y= C1(1/(1+C2e^C3x) for example

how do i use the nspire to find arc length?

HI I need your advice to buy a calculator to be used in master study in electrical engineering-communication and computer networks and also useful as an engineer (electrical engineer/Electronics & Communication) Thanks in advice

Hi there. Thanks for taking the time to read this thread. I am needing some opinions on three calculators I am looking at for college algebra. The runners up are the HP 35s, TI-36X Pro, and the Sharp EL-W535XBSL. I am wanting to use it for my Math 1000 and Math 1050 classes. Price is no issue...

http://i.imgur.com/qsZ0PM4.jpg I opened up the back of the calculator to see what kind of battery I might have to replace eventually, but I didn't expect to see a second battery slot. Is it a backup battery slot? If so, how do I tell what kind of battery fits in there? I checked the manual...

Hi I need best calculator for electrical engineer ( communication or computer networks) I think ti-89 for DE solver read about casio and hp but still need advance for pro. Thanks

Hi and thanks for reading. I am looking for a calculator to use purely in exam or tutorial situations where I don't have access to a computer and need to solve algebra problems (usually hydraulics (mannings, specific energy equations solving for flow depth) or geotech related) where the...

Homework Statement please help me solve the following, I do not have a good enough calculator :( 15=35 sinΘ(-35 sin\vartheta \pm( \sqrt{(35sin \vartheta)^2 -294)}/-9.8) -4.9((-35 sin\vartheta \pm( \sqrt{(35sin \vartheta)^2 -294)}/-9.8)^2 It is a massive equation, I tired using wolfram...

I can do some of the problems on this, but some I can't figure out. The answers on these listed I am getting wrong, I covered up the ones I know. I am obviously making a mistake typing them in my calculator. The ones with the e not in the exponent but the base, I can't figure out how to enter...

Hello I have a TI-84 Plus calculator and during my math class we were doing log functions on the calculator and I was met with the err "Argument". I don't know what this means, but from what I've heard my calculator is missing the required software to run a log. I should clarify that when I say...

For pre-calculus 12, is there a need for students to master the ability of graphing quartic or quintic functions without using graphing calculator?

I'm struggling with this lately, I know that it depends on what you need to see, but is there a general rule of thumb?

Help!Strange problem with scientific calculator. I was doing chemical equilibrium problems where one of the steps required me to square the reciprocal. Which was (1/4.2x10^52)^2 The correct answer for this is 5.7 x 10^-106 but my Casio FX 115 ES calculator keeps showing zero. Can anyone...

Does anyone know of any calculator apps that can deal with units? I know I can do it on google search, but I was looking for something more like a calculator. I found this one: http://physyapps.com but it's only for iphone and mac. Thanks, Paul

So my numerical analysis class requires me perform iterations involving huge expressions into my strictly NON-graphical scientific calculator. It often happens so that my current calculator (CASIO fx-911ES PLUS) does not allow me to feed in it a expression which goes beyond its input memory...

Im trying to determine the exact solutions (in degrees) to the trig equation shown below. I'm only interested in solutions over the interval [0, 360) . In my ti-83+, I input the function as y= 6(1/cos(X))^2*tan(X)-12tan(X). If I already know the number of solutions is 6, how can I tell this from...

Hi, Does anyone know a program that I can put on my TI-84 calculator that will allow me to input any transfer function and get the state space representation of the system or the other way around. For example G(s) = \frac{\sum(K_{i}s^{i})}{\sum(P_{i}s^{i})} The calculator prompts you...

Just upgraded my internet, and I want to upgrade my download calculator along with it, since I find many programs give me shaky and inaccurate download times. I rigged my network so I can switch between my slow speed and fast speed DSL. The problem is the "if / else" statement at the end of...

Finally finished up the snow load calculator. Moved it to this page: http://design.medeek.com/resources/snow/snow_calculator.pl Give it a whirl and let me know what you think. I wish there was an easy way to calculate the ground snow loads for a given location but unfortunately there...

Hi all, I am a programmer and in one of my projects I need a cash payout calculator based on upper and lower minimums and variable input. Here are the variables: Total amount to payout Total number of payouts Set minimum first place payout Set minimum last payout "K" to vary the slope of the...

Homework Statement Find the voltage Vo using node voltage method specifically.Homework Equations The Attempt at a Solution I am able to get the correct answer when finding the equivalent impedance, then determining the current, and then finding the voltage at the first node V1 by subtrating...