Writing Definition and 712 Threads

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.

So I'm writing a computer science paper and i had a few questions. I have created some algorithms; i see a lot of papers presented in the algorithm, theorem, proof layout. So, when i say algorithm x.x i basically describe what my algorithm? and when i have a theorem, is it basically saying that...

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...

I'm doing some research in which I'm using homology theory to solve a problem in computer science / engineering. Most of the work is on the CS part, but I know enough homology to get me around. I'm not really coming up with any new math per se. I'm not doing any hardcore proofs or anything. My...

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...

I'm applying to some a several master program in many Schools, I have to write a letter of motivation, I clearly understand the main concept of it, But what do I have to write in it? How long should it be? I know I should be honest, how much honest I have to be? I have like a hundred question...

Recently, I've been trying to brush up on my writing skills in preparation for the coming graduate school storm. I've gone through Strunk and White's book twice, but I was wondering if anyone knew of a good reference, on-line or otherwise, about scientific writing. I'm just looking to brush up...

I'm trying to solve a problem in E&M, and I got an equation which depends on p and q, which I can solve provided I can write sinh(\sqrt{p^2 + k^2} \pi) as a product of a function of p, with a function of k. If I can do that, I can solve the problem, but I don't know how to do that part (or if...

Hi, Sorry if I put this in the wrong forum. Ive just been writing up my notes and I can't seem to be able to write things like this: ^{12}_{6}C using microsoft word. If anybody could explain how I could write it in this, I'd be very appreciative. Thanks

I'm quite confused by mesh analysis. I understand that the idea is basically to apply KVL to each mesh. For example, if you have a loop that contains, say, a 3ohm and 2ohm resistor, and that's it, what is the correct KVL equation? Is it simply 0=3I+2I? As another example, check out this...

Homework Statement Write the equations of a surface of revolution with axis OZ: A) the Torus obtained by a rotation of a circle x= a + b*sin(u), y= 0, z = b*sin(u) 0 < b < a B) the pseduosphere obtained by the rotation of a tractrix x= a*sin(u), y=0, z= a*(log(tan(u/2) + cos(u))...

I'm writing a story/novel at the moment and need some info. Can anyone give me a list of current concepts for interplanetary travel?

I am having the hardest time getting this algorithm written: Write an algorithm that returns the index of the first occurrence of the largest element in the sequence s1,..., sn. If the sequence is 6.2, 8.9, 4.2, 8.9, the algorithm returns the value 2. Input: s, n Output: ?? I'm...

This is a completely ranting thread, I do not know if this is appropriate, but I just hate my expos 101 class so much! In my university, every freshman is required to take a writing course (if that person does not have the equivalent AP credit). What we do in that class is: we read totally...

A while back, I found an online applet that was located on the front page of the mathematics department website for some American university. The problem is that I can't remember which university it was, and I'm not succeeding in several searches. Basically, the way it worked was, you type...

Just a quick question! I'm writing a report for a unit that is meant to be written according to a "standard scientific report" format. So for the most part I know how to set it out, but I was just wondering about my calculations. I observed a star and to make sure that it was the right...

I have no idea how to type math symbols into here so it's all in the PNG attached. I'm probably kind of dumb for not getting this but... I understand that 1) & 3) are true. And the 2) is not right, as it means all x are members of F and true for P(x) when we mean all x that are members of...

Hi there, I'm stuck on getting my step function set up. the function is: f(t)= 0, t<0 (a/b)*t, 0<t<b a, t>b where a and b are just constants. Here's my step function of the first two intervals...the first one I didn't do anything to it since it's zero, so I got...

How can you find average velocity from a position-time graph? How can you find instantaneous velocity from a position-time graph? Any help is appreciated!

Hello everyone I'm having problems on this last part of mathematical induction. I have to show that the two equations are equal to each other. The book shows a few examples which i will show below. They are writing the kst term separately from the first k terms. Heres my problem firstly...

Precalculus: Writing polynomial functions (help!) :( Hey guys and gals, i'd appreciate if you could help me (well) with this question. Write a polynomial function at minimum degree in standard form with real coefficients whose zeros include -1 and 1+4i :O its hard for me, I am not a...

Hello everyone. I have the following: THe sumnation of 1/k! from k = 0, to n. I"m suppose to write this in expanded form. I did the following: 1/0! + 1/1! + 1/2! + 1/3! +...+1/n! = 1 + 1 + 1/2 + 1/6 + 1/24 + 1/120 +...+ 1/n! Is that what they wanted? An example simliar to this one was...

I'm practicing induction and proof-writing, and I have a small query. How do we use the inductive hypothesis in our closing argument? Can we equate it to a statement proved by a lemma? For instance, do we assume that the inductive hypothesis is true in the (n+1) case all the time? Also, can...

Could someone guide me through this? *math dummy* Write a polynomial in standard form that models or represents the area of the shaded region. http://www.sfu.ca/~tca19/thing.GIF Thanks!

ello ello! The directions are the following: Rewrite each of the following statements in the two forms \forall x, if ____ then ___ and \forall _____ x, _____ For some reason the latex keeps putting an x for the 2nd form, but it should be Upside down A ______ x, _______ for the...

I'm writing a large amount of data to a binary file. Trouble is, I don't know how much until the program finishes executing. Given this, I'd like to rewind back to the beginning of the binary file and write an element indicating how many records I wrote to the binary file - this way I can...

I'm assuming this is the correct forum, please tell me if it isn't so I'll know if future. I'm new to the whole formulae thing, and need some help with some (presumably) easy formulae. How would I write the following in both words and symbols? I've done as much work as I know how to do, so...

Hello, How do you all make your numbers look so nice with a horizonatal line between the fraction? I tried inserting some from copy and paste and it lost all the subscripts. Is there a way to do this on a computer without saving capabilities?

Book report! I am supposed to write a book report on any book of my choice, I am thinking of a sci-fi book (maybe I, Robot or The Robots of Dawn, but the second one I suppose is not a good choice. Suggestions are welcome though.). But I am facing a tiny little problem. I have never written a...

How I can write a program which reads a sequence of integers and counts how many there are. Print the count. For example, with input 55 25 1004 4 -6 55 0 55, the output should be 8 because there were eight numbers in the input stream. Please help.

For summer session I, I have two classes, Fluid dynamics and Technical Writing. I went to Fluids class today, and it was superb :approve:. My professor is an Indian guy who works at NIH. I like his teaching style. He writes on the board beautifully. It's almost like reading a textbook on the...

Carbon monoxide reacts with the iron (lll) oxide. Would it be like this... 3Fe2 O3 + CO= 2Fe3 O4 + CO2

So I'm writing a paper on why seatbelts are dangerous Hello all, I just started here and I am writing a 10 page paper on why seatbelts are dangerous. I am using the concenpts of Newton's First Law, Impulse, and Momentum. I can not stray away from those unless it proves my thesis as to why...

What exactly does this mean, i have a set of data and it asks me to write a model for it, and to define all non-arithmetic peices in my model. The data shows no real symmetry or anything. What type of "model" should i be writing ? :confused: Here is the data.