Writing Definition and 688 Threads

R is a bounded region in xy plane defined by y=x2 and y=x+2 a) if f(x,y) is a func. defined in region R, describe how to write double-integralR[f(x,y)dA] as a sum of one or more iterated dx dy integrals. b) if f(x,y) is a func. defined in region R, describe how to write...

hi. for a science lab in school we were discussing/exploring chemical equations... we had hydrogen peroxide (H2O2) which was catalyzed by potassium iodide (KI) for our lab report we need links to a website which describes how to properly write equations w/ catalysts. so firstly is this right...

Hello all, In my research, I use DFT from time to time using SIESTA or VASP. I have spent much time reading up on the various aspects of DFT and think I have a pretty good handle on it. In order to prove this to myself, I would like to start to write my own code. I am however finding that...

Hello, please help me to find the problem in algorithm. My task is to read from file hotel visitor's info (name/surname, date of arrival, date of departure, room number). Than, to contract similar room numbers and write near the overall number of days in particular room. So everything is good...

I'm a student that isn't quite understanding how to write formulas for compounds. any help would be appreciated. thanks.

Hey guys, I was wondering if you guys could provide me with a name of a decent, but not too pricey, digital pen. I am not sure if this is the exact name I am loking for, so what I want is a pen that I can write on a given tablet/surface with and for it to show up on my PC. For example, I could...

Homework Statement A chemical reaction A -> B is carried out in a closed vessel. If the tank volume is 30.5 gallons, and there is now B in the tank at t=0, how much B in grams does the tank contain after 2 hours? The reaction rate is constant, k, and k= 9.3x10^-3 g/L per minute Homework...

OK guys I'm a physics student, I'm trying to write a paper on representation of a given number with 100Cr digits with few alphabets(a-z)and some equations,assuming some arbitrary constants. I'm giving falsification test here:- (1) The equation don't need to work,if the digits are lesser or...

I have been told by a few people that people that have a very good technichal knowledge (i.e. engineers) and can write well can make loads of money. I can't really find where the two paths intertwine. Can someone explain what they mean?

Could someone tell me what I'm doing wrong? thanks! Homework Statement Write the equation is cylindrical coordinates 7x2 + 7y2 = 2y r = ? (has to be in the r = ? format) Homework Equations r2 = x2 +y2 x = rcos(θ) y = rsin(θ) The Attempt at a Solution 7x2 + 7y2 = 2y...

I needed to write an equation for a wave with: amplitude : 2cm wave vector : 502.7 angular frequency : 125.7 Hz time : 0 sec and I used the general equation for waves to come up with: y = 0.02 sin (125.7 - 502.7x) is that alright?

Homework Statement Write a balanced equation and indicate the reaction type (single/double replacement, decomposition, or synthesis) for each of the following: a) Sulfuric acid (aq) + potassium hydroxide (aq) --> b) Zinc (s) + sulfuric acid (aq) --> Homework Equations The...

Hi, I was wondering what was the general consensus on getting a rescore on the analytic writing part for the general GREs. Do people who get the rescore tend to get a better score? Or is it the other way around? Thanks, LX

The definition I have for a random variable is X=\lbrace \omega \in \Omega \vert X(\omega) \in B \rbrace \in F where F is a sigma algebra and B is a Borel subset of R. Using function composition, how would one write a similar set notation definition for f(X), where f is a Borel measurable...

Homework Statement Write the formula for Ammonium Sulfide Homework Equations NH4^+ = ammonium S^2- = Sulfur The Attempt at a Solution NH4^+2S

Hi! Thanks for helping me. I need to write a program (in C++) that reads the file Employee.dat as input and then outputs to 4 different files which are Managers.dat, Marketing.dat, Developers.dat, and Testers.dat. Each of the output files contains the name of the employees of its category. The...

I am about to write a thesis. I was just wondering whether Scientific workplace is the best software to write a thesis or MS Word. Any advice wouuld be welcome.

I would like to write a C program that writes itself to the screen (without reading from disk). My idea is to assign text to a string S, split it into two parts S1 and S2 and then write each part twice. If S1 is made equal to program part before text definition and S2 equal to program part...

Hi, I am looking for some opinions on making the transition from computations to proof-writing. Next year, I plan on taking Honors Calculus at the University of Chicago and rather than learning axioms or any new mathematical concepts, I'd like to learn how to express mathematical ideas better...

I have been writing a program to compute and change a value a great number of times and writes each value into a file I did this by continuously storing each value (which is a 7 element vector) into an array, and then writing that into a file using the cvswrite function The problem I am...

Hey I was wondering if anybody had any tools that are downloadable for writing math or physics equations on a regular word document? Mabey something like latex writing? I use wordperfect office x3 by the way.

hi, i had my SAT exam today. The topic was: Can the past influence the present? there was an example i included in the essay, which now I'm feeling unsure about. I talked about the holocaust (past event) and the recent apology of Angela Merkel to the jews (present). and i also talked about...

Homework Statement A sinusoidal wave traveling in the -x direction (to the left) has an amplitude of 20.0 cm, a wavelength of 29.0 cm, and a frequency of 15.0 Hz. The transverse position of an element of the medium at t = 0, x = 0 is y = -3.00 cm, and the element has a positive velocity...

Hello to all, I want to analyze and make model of the water mixing process as shown in file in attacment. Basically, there are two input variables: input hot water flow and cold water flow. There is constant flow FL3. I need to write equation that describe how level and tank's temperature is...

[SOLVED] spell check latex Is it possible to use spell check when writing in latex using the texnic center?

Hi, Anyone knows a dummy book that can tell very basic step by step for writing firmware codes? Thanks Mike

I have just started computer programming in this running semester. So, I'm not experienced in writing pseudo-code. I have one thing to ask. Look at the following c++ statements: [FONT="Courier New"]if (x>10) [FONT="Courier New"]cout<<"x is greater than 10"<<endl; Can I replace these c++...

Does anyone else write equations on cornflakes packets? When I've eaten all the cornflakes, I separate the seams of the packet by running a finger down them, and flatten out the cardboard into the huge rectangle it started as. Then the rough blank side is a nice solid surface for writing...

What is the proper way for me to write symbols for elements such as Chlorine?

Can someone please clarify: If i wish to write2^(√2) as an exponent am I correct in thinking this will be written as: exp√2(ln2) ? Thanks

How do i go about writing IEEE papers in Latex do i need to download some additional files for it , Or whts the syantax to write IEEE format papers

Writing "Cram Sheets" for Math/Science Classes... I like to write "Cram Sheets" for Math/Science Class that include my common mistakes, important notes, and any extra information that my textbook does not accentuate or simplify. I like them to be neat and tidy (and hopefully digital so I can...

Homework Statement An engine is operated slightly fuel rich (phi>1). Ethylene (C2H4) and inert nitrogen (N2) are the reactants and there are 40 mol of nitrogen for every mol of ethylene. The hydrocarbons are burned over a catalyst and converted to carbon dioxide (CO2) and water vapor (H20)...

Can anybody suggest how to write an open interval (a,b) as a combination(union, intersection and compliment) of closed intervals of the form [c,d] and vice versa. What if closed intervals are half closed as following (-inf, f]. 'f' being rational.

This may seem a very strange poll but I honestly want to know what others think. I just spent 1 hour writing out a full, rigourous solution to a problem. I formulated the main idea in about 5 minutes and I knew that my proof (once written out) would be correct. After spending about 12 times...

Homework Statement How do you write the following in f(x) form? x =1; {3<y<6} and (x – 3)2 + (y – 9)2 = .25 Homework Equations The Attempt at a Solution I had to use these equations in a project that I am graphing and I must also include the f(x) form and I am lost. Can...

I need to write a balanced equation for a reaction between water solutions of nitric acid and magnesium hydroxide. I'm stuck and I'm sorry I don't know how to type in subscripts, so I can't write out the formula on here. Any help?

Homework Statement Okay so I want to be able to do this in Microsoft Word 2003: http://upload.wikimedia.org/math/e/7/b/e7b1daa5e6f9f335dabcc1ca136c93a8.png Homework Equations None. The Attempt at a Solution However, the problem is, when I try to do subscripts and superscripts...

Hey guys, I am having difficulty interpreting M(x,x') into dirac notation. How do i write M(x,x') in dirac notation? The actual problem is to write the following in dirac notation: int { int { m(x)* M(x,x') g(x') } dx} dx' I would appreciate your help.

writing zetas and xis in greek is driving me insane! does anyone know where there is a good tutorial on the web for writing greek letters?

It seems to that i went wrong way. Homework Statement \int \frac{arcsin(e^x)dx}{e^x} The Attempt at a Solution =-\frac{arcsin(e^x)}{e^x}+\int \frac{dx}{\sqrt{1-e^{2x}}} \int \frac{dx}{\sqrt{1-e^{2x}}}=\frac{x}{\sqrt{1-e^{2x}}}+\int \frac{xe^{2x}dx}{(1-e^{2x})^{\frac{3}{2}}}

Let's say you're running a Fortran program that writes to the hard drive. What happens when the hard drive is completely full? Do other files get written over?

Writing a Drama -- Searching for God I'm currently writing a drama revolving around an autistic guy and his prodigious 8 year old nephew looking for God/Heaven by building a machine - trained to the skies and capable of receiving signals. The whole thing is an analogy on the more tangible...

Hi! How can i write chemistry formulas in LaTeX ? Such as: MgC_12 etc... It does not look good if it is done in math-environment...:rolleyes:

Name the following :ZnI2, BrF, FeSO3, CaH2, BaHPO3,CuNO3, AgIO, SO2 write the correct formula of these: zinc sulphate, barium nitrate, gold(III)nitrate, barium chloride, mercurous nitrate, antimony(V)cloride, ferrous bromide, calcium carbonate and hydrobromic acid. i have attempted them...

Hi, Hope it's ok to post this not sure where else it could go and you seem like a bunch of bright chaps who could give me some good feedback so: http://www.savefile.com/files/777513" It contains adult content so please be warned thanks :wink:

hello, I need the code to write pictures to a file so I can read them sequentially.

Rather than waste precious time going to the shop, you endeavor to use up anything and everything left in your cupboards and fridge. (This week I have eaten mainly toast and raw carrots.) You actually have a hard time thinking how you will spend your days after work is completed. (I did...

Whats "LaTeX " is it formula writing software for the forum? - sounds useful David

Here's an interesting piece of news I found today: http://www.msnbc.msn.com/id/18353425/&GT1=9246" Apparently a student wrote a violent essay for a creating writing assignment, and he's being criminally charged. The maximum jail time is 30 days. I'm no legal expert, but I'm quite...