Writing Definition and 688 Threads

hello! I'm new over here.. Hope I'm writing where it should be written. What is the solution of [SIZE="6"]x=tangent(x) ? Well.. in fact I'm looking for the point where the graphs of function tangent and its inverse, arctangent, intersect each other (if we plot them on the...

For finding domain of a function in Rn, I have jot down some of the points. Assuming, if one or more of these 'x'es are a part of the expression of a function f(x1, x2, x3,…, xn), we do the following in writing down the domain: - for √x we write x≥0 - for 1/x we write x≠0 - for 1/√x we...

Hello, I have a BS in Engineering. I am applying to science writing graduate schools for a plethora of reasons. Are there any science writers on this forum that could offer me advice on the lifestyle they live (is it hard to find work? lots of travel involved? making a name for yourself...

Perhaps this is more of a poll... How do you write your numerals in the U.S.? 1. My ones are European-esque if the 1 is to stand alone (that is, if it's not a 1 that's going to be in the middle of an unambiguous number, then it will have a hook and a base...but if it's smack in the...

Hi, this is my first post, so if it's in the wrong place please let me know. I'm writing a bit of fiction, more fantasy than science fiction, but I don't want to immediately offend the sensibilities of everybody who knows something about science. I really like the idea of a six dimensional...

I am very new with Mathematica and I need help writing a program that generates a Farey Sequence. Farey[n] := ? The result should appear as follows, for those values of N. Farey[1] = {0/1,1/1} Farey[2] = {0/1,1/2,1/1} Farey[3] = {0/1,1/3,1/2,2/3,1/1} Farey[4] =...

I need some help writing a Farey Sequence in Mathematica, so far this is all I have: FareySequence[n_] := GCD[a, b]; While b : a, b = b, a % b; result := a Simplify[a, b]; g := GCD[a, b] result := (a/g, b/g) I am very new to programming, please help!

Homework Statement How do you write Fe2S3 in IUPAC method, it would be great if you could explain and show some examples of IUPAC methods. The Attempt at a Solution I just want to see how you do one of them then I can probably get the rest, thanks a lot.

The Farey sequence F_n (F subscript n) for any positive integer n is the set of irreducible rational numbers a/b with 0<(or equal to)a<(or equal to)b<(or equal to) n and (a,b)=1 arranged in increasing order. The first one should be: F_1 = {0/1,1/1} F_2 = {0/1,1/2,1/1} F_3 =...

How can you write numbers (1,2,3,...) in statistical way?

I'm writing this letter to get some advice in terms of which school (my two top choices, already accepted) his company and the industry hire more from. I'm an engineering major by the way. Also want to ask about any internship opportunities, but I don't know if it's appropriate to ask him. I was...

Homework Statement I'm having some trouble understanding exactly how the eigenstates of this matrix are being presented. A= ( 0 -i i 0 ) <- matrix I can find the eigenvalues to be +/- 1 which gives the eigenvectors to be x=-iy or x=iy. The eigenvectors are then being...

I'm working on a report that describes the input and output from Mathematica. Is there any standard way for me to represent them? I done this openoffice already but I want to put my paper into latex. What I currently have in Openoffice format was like this: Input: [1] ________ [2] ________...

Ancient Tablet Found: Oldest Readable Writing in Europe Found at a site tied to myth, Greek tablet survived only by accident, experts say. http://news.nationalgeographic.com/news/2011/03/110330-oldest-writing-europe-tablet-greece-science-mycenae-greek/ :cool: An example of Celtic text -...

Can someone please explain to me how exactly you write down a metric, say the FLRW metric in matrix form. Say we have the given metric here. ds^2 = dt^2 - R(t)^2 * [dw^2 + s^2 * (dθ^2 + sin^2(θ)dΦ^2)] Thank you.

Hello, I am currently at work and I'm going to spend about 5 hours a day in front of the computer. This would be an excellent time to get some of my MATLAB homework done and prepare for my midterm. The thing is, this computer does not have MATLAB and I am not able to download anything (Wordpad...

I am writing a paper for a journal. The paper is supposed to have quite a few circuit diagrams. What software should I use to draw the circuit diagrams?

Homework Statement I have to fill in the missing info... Y=A*Sin[B(x-c)] +D A = 3. For finding the amplitude all I have to do it multiply 1/2 by the range? D = 3. For finding upward shift all I have to do is see if the center has moved up? period = 4pi/3 so B = 3/2 I am confused on...

Hello, Recently I've been attempting to put together a brief book on mathematics. The first section is short and introductory as I lead up into calculus. I kind of feel bad that I skipped over conics, geometric series, permutations and combinations, transformations of functions, and so many...

Homework Statement I worked a textbook problem earlier where I had to write the Lagrangian for a pendulum (of mass m and length l) connected to a massless support moving along the x-axis. I chose the angle theta as my generalized coordinate, since the problem specified that the acceleration of...

I am getting a ton of errors trying to compile this. I am including PAPI and ATLAS calls but so far I think those calls are working ok. For each subroutine, I am getting "unclassifiable statement" for the subroutine definition as well as "unexpected implicit none" and "expecting end program...

Hey guys... here is the thing.. i kinda blur to talk about the operation.. i need help from u guys to give me ideas to write about the operation.. i attempted the question already.. but, i think it wasn't enough explanations. [PLAIN]http://img401.imageshack.us/img401/8831/74967107.jpg

Homework Statement how do u approach a question like that? write an equation that satisfy the following simultaneously a) the domain of f is (-Infinity, 0) U (0,infinity) b) f is continuous on its domain (that is everywhere except at x = 0) c) lim f(x) as x--> 1- (from the left) = -...

How do I write this in calculus notation? [delta]E = (-2.178 x 10^(-18) J) / (n^2 - n_0^2) were [delta] is the Greek letter delta used to represent change of E = Energy -2.178 x 10^(-18) J = Different form of Rydberg's constant J is the unit for work Joules n = energy level of an atom...

I know its xmas eve and all but I'm pretty bored (bah humbug!) anyway I am just going to while away my time listening to songs on youtube... and writing random stuff here on pf...

Hi all, I have taken Calc III, Linear Algebra (Bretscher's book), and an ODE class, which have all been mostly computational. I plan on taking upper level math courses such as abstract algebra and analysis, and my understanding is that the latter are proof based rather than computational. Are...

This is all done really fast for fun, may be some mistakes. I'm a paintball player, and there seems to be a very prevalent misconception that certain paintball markers shoot paintballs greater distances than others. This isn't true because before actually playing, your marker must be...

I'm currently filling our applications and one of the applications requires a statement of purpose of "approximately 1000 words." The one I have written is currently 1500 words so it obviously has to be trimmed down. But as 1000 words is not a strict cap, I was wondering what a reasonable amount...

I've been thinking a lot about my education lately and I'm thinking science may not be the right path for me. I won't go into a list of reasons why, but I'm pretty sure it's just not for me. However, I'm still fairly interested and knowledgeable on the basics (I'm in my second year of...

I'm writing personal statements for my grad school applications, and in most of the threads in this forum giving advice for personal statements, they say to add a paragraph talking about specifically what research at that university interests you, and what professors you might like to work with...

I am a mechanical engineering student at the Oregon Institute of Technology and am looking to interview a mechanical engineer for a writing class. I am interested in learning what types of communication you use such as proposals and recommendation reports. If anyone would be willing to help with...

Didn't really know what board to put this post on, but anyway... After finishing a 10 day lab project, I'm expected to produce a 2 (possibly 3) page conference paper about it. Having never written a conference paper before I'm not too sure what to include and what not to... I have...

Homework Statement Write the equation used to calculate net force on a block of mass m that is accelerating down a ramp. Homework Equations The Attempt at a Solution Okay I think that we are going to have to use the equation F - f = ma. Since the question says to find the net...

Homework Statement Of the following, which correctly shows an ion pair and the ionic compound the two ions form? Homework Equations a. Fe3+, O3+ = Fe2O3 b. Cr3+, I- = CrI c. Cu2+, O2- = Cu2O2 d. Sn4+, N3- = Sn4N3 The Attempt at a Solution a. Fe3+, O3+ = Fe2O3...

I just got back my score on the writing section of the general GRE. Apparently I got a 3.5, which puts me in the 25th percentile. Now I don't mean to sound arrogant, but writing has always been a strength of mine. When I write papers, either for physics or humanities classes, they usually come...

Homework Statement All answers shuold be in terms of m,g, θ ,μk and μs 1.Write the equation used to calculate the force required to move a block of mass m across a floor with a constant velocity. [SOLVED] 2.Write the equation to calculate the tension in a rope holding a block of mass m...

Homework Statement Write the vector <1,7> as a sum of two vectors, one parallel to <2,-1> and one perpendicular to <2,-1> Homework Equations DOt Product The Attempt at a Solution I'm confused on where to begin this problem. Should I be using the dot product? Thanks

I am writing a article in my university newspaper, and I am just gathering as much info as I can about chernobyl, now and then. ***EDIT*** OK, got some good info, so I am changing my post here. Im trying to come up with a really good intro, but I don't like what i came up and want something...

About how many hours a week would a typical electronic systems engineer spend writing reports vs the number of hours spent doing actual engineering? And, what kind of jobs could i look for in engineering that minimize the amount of writing i would need to do? I'm a first year student, and am...

I have three questions: 1. Suppose your supervisor has given you freedom to choose topic of research (for PhD). How do you decide what topic to work on? 2. Can one work on two somewhat disconnected topics and write about both in same thesis? 3. When do you feel that you have done enough...

Hello everybody, For a long time now I have been trying to find the very best thing to write with. I spend most of my time studying and solving math and physics problems so naturally pens and markers are a huge part of my life. I like to write with multi-colored pens as it helps me keep my...

how to write an assembly program to calculate the dot products of two arrays ?? Thx Anyone know how to write an assembly program (source code) to calculate the dot products of two arrays with LC 2 ? Given: The size of each array is 15 (a[0],...,a[14] ; b[0],...,b[14]) that are stored in...

Where could I find a webpage or guide on how to write unit vectors in terms of sin and cos? I looked through my textbook and tried searching google, but I can't find anything...I must be using the wrong terminology. edit: Delete me! I had one of those epiphany moments and figured it out...

Hello guys. I was wondering if you guys could give me your opinion/advice for the following scenario: Yesterday I wrote my first midterm in statics (1st year engineering), which is worth 30% of the final mark. The written part of this exam, worth half of the entire midterm, consisted in a...

hello everyone! I just started a course in real analysis and i must say that it is quite different from all the "engineering math" that i have taken before.I was wondering if anyone could give me tips or advice on how to get better at writing good proofs. Right now,we are using a book called...

Does anyone have suggestions concerning software which would be good for including numerous graphs, tables, and visualizations...some equations. I'm aware of the usual (and use them), including Latex, Lyx, JasperReports (in Java), etc. I'm just looking for something better...more like...

Here's the problem. Having traveled 15000km to my new college, I've come to realize that I cannot find the beautiful, extra fine tip, navy blue gel ink that I've used for 11 years. Now I'm desperately for a new pen, one that can give me the same, smooth, effortless feel with minimal smudge...

Hi, I am very new to matlab, this is actually the first time I am using it. I have to write a code for finding averages, right now I have "function av=average(x1,x2,x3,x4,x5) % average(x1,x2,x3,x4,x5) returns the average of (x1,x2,x3,x4,x5) av=(x1+x2+x3+x4+x5)/5; return;" This works just fine...

Now, before I begin, let me say that I have no idea where this would go. It's homework, and it does pertain to introductory physics, but I'm really asking more for general tips than answers to any specific problem. So, I have a lab report due in about 9 hours. I've already gotten part of it...

I am writing a story and one of the main themes is the discovery of magic. The story is set in the tenth century AD, somewhere in Europe. What I am looking for: - Questions that most authors don't bother answering when covering this subject. - Answers to these questions. One...