Text Definition and 558 Threads

Hello I'm currently in lower Sixth Forum (Junior in Hight school for the Americans) taking As levels (maths, further maths, physics and chemistry) I'm looking for three things. 1. Text book on special relativity (probably going to buy 'Spacetime Physics') 2. Questions with model...

I have win7 I want to keep my icons. At the size they are but I want to make just the. Text size bigger. How can I do this I think I looked everywhere. Can you tell me??

Hi - I recently bought an old edition of carroll ostlie real cheap and I'm not too motivated because the book is gigantic and unwieldy. anyone know of a good intro astrophysics book on that level but in a fun-size/portable? :D Thanks

Homework Statement Find the distance between P and Q P(13x,-23x), Q(6x,6), x>0 *This came from Chapter 1 Linear Functions, Equations, and inequalities Section 1.1 Real Numbers and the Rectangular coordinate System of A Graphical Approach to Precalculus with Limits by Hornsby et alHomework...

Homework Statement My textbook shows a vector B 130° from the positive x-axis. B has a value of 5; it asks for the x and y components for B. But they show a way other than SOH CAH TOA. They got the x component by multiplying 5(cos130°) and the y component by multiplying 5(sin130°). What...

I am interested to know what book(s) others would recommend to someone aspiring to learn fluid mechanics from and what kind of preparation would be required for that book. I am an undergraduate student and have completed courses in single and multivariable calculus, linear algebra, ordinary...

I'm looking for a textbook that covers all of the standard undergrad algebra topics but from a more modern perspective. For example, most books reprove the isomorphism theorems for groups, rings, modules, instead of showing that all of these structures are universal algebras. Ideally the text...

I need to parse HTML and search for some text. For example, a text containing XXX (just random input) needs to be searched in HTML. I need to parse HTML, search this XXX and get its CSS attributes. However, this XXX text can be in any HTML tags. Java/JavaScript/PHP are all available for...

text files consists of 0&1 bits. But in ASCII, Most Significant Bit(MSB) is 0, so we have more 0s than 1s. Assume that we draw bits at random. Question: What is probability of drawing 0 in 2nd time, given 1st drawing was 0? My Analysis: From bayes formula, Pr(0) = 1/8*1 + 7/8*1/2 = 9/16, so...

This is from section 2.3 in Griffith's book on the harmonic oscillator, and apparently this differential equation should be obvious (to move on in my reading, I need to understand this first). I'm not quite sure how to solve a second order ODE without constant coefficients, so help to get to the...

Homework Statement Im a big rookie in Java ( and pretty much every language). I am trying to make a Minesweeper game for an assignment and I am still in the beta stages. I am stuck however on how to display the mines as a "0" once the button is pressed. I created the Jbuttons using a 2d array...

I was hoping someone could clarify a step of an example in my calculus textbook. lim x→∞ (√(2*x2+1))/(3*x-5) = lim x→∞ (√(2+(1/x2)))/(3-(5/x)), (since √x2=x for x>0) The description for the step says to divide numerator and denominator by x. I understand to divide top and bottom of a...

Hi guys, I'm still somewhat new to the forum. Been learning quite a bit here. This coming semester I'll be going back to school. I'll be doing Electrical Engineering. I was wondering if anybody knew of any online bookstores preferably European (due to shipping) where I can purchase cheap...

Near the end of July, it was the last day of term so I took my chances and I asked a girl in my chemistry class if she wanted to go out with me, and she rejected me. A couple of weeks later, during the holidays, I tried to reach one of her friends to ask her out (I had a crush on her too -- I...

Hey guys. Does anyone know of a good undergraduate level textbook on number theory? I have a pretty solid undergraduate level math background but have never had the chance to take a course on this particular topic. If anyone could recommend a textbook that he/she likes, or is widely used at the...

Anyone know of a good textbook that i can get off of amazon. I just want a good book to steer me in a good direction. Because i just study this a lot in my spare time and i don't have a decent source of information. Any textbook will do but i need something. The difficulty of the book does...

Hi to all. I'm sorry for my english, but I come from Italy. My CASIO fx-9860GII SD calculator see the text files who I put near its SD, and I can copy they on main memory, but I can't open they to read! How can I read the text files by the calculator? Must I use a particular software to...

hi, I have a big text file which includes lots of text and data (gaussian log file (it's a scan file)) and I need to extract some data from it. so I need mathematica to search along the textual data and find some strings and put the value in front of that string into a variable. can you...

Homework Statement Given a polynomial P(x) and a divisor D(x), divide P(x) by D(x) and return the answer in the form P(x)/D(x) = Q(x) + R(x)/D(x) In this case: P(x) = 4x^2 - 3x - 7 D(x) = 2x -1 Homework Equations The one given above The Attempt at a Solution I solved the...

How can I make a box around text in Java which will appear in Windows cmd.exe? Only using System.out.print("X"); and System.out.println("X"); . It MUST be a solid box and not use symbols like - or _ . It can also use int X , double X, char X, String X, and boolean X. Please explain...

I have a text file of the format x1 y1 x2 y2 . . . . . . I need to read this into an array. How is this done in Fortran?

Homework Statement This is question 1-9 from French's Special Relativity Homework Equations The equations are shown in my attempt at a solution belowThe Attempt at a Solution ------------------------------------------------- The answer in the back of the book states it should cost about...

Hi all ! I am a little new to FORTRAN and I am sorry if the title is confusing but I couldn't come up with anything better. I have a file of which I am showing a snippet below: *>>>>>>>>CHARMM22 All-Hydrogen Topology File for Proteins <<<<<<< *>>>>>>>>>>>>>>>>>>>> and Nucleic Acids...

I just downloaded a couple programs on my 89 but when I push down its kicks me out of it. I know this is probably an easy fix but thanks in advance!

Homework Statement I would need some help with extracting two matrices from a text file into Matlab. First is the 60x3 matrix of node coordinates. Second is the 24x8 matrix of node numbers assigned to elements. I have 24 brick elements so each of the elements has 8 nodes. But there are some...

Win 7 MinGW compilers. I have a txt file that has empty lines that I'd like to pass by when reading them. Each line is assumed to be 85 characters. Here's a snippet of code: Open(unit=astro_in, file="METEOR_LegacyInputToNML.txt", status = "OLD") do while(.True.)...

For any mathematician or physicist, what textbooks do you consider a must read? Also, what books do you remember reading that gave you great insight into a topic which you previously did not have?

Dear PF, Could you please advise me good detailed reference on Grand Unified Theories... especially I want to see where for example SU5 potential is composed from two Higgs representations (two Higgs fields) and how symmetry breaking (minima of potential appears for both of fields) happens...

Hey everyone, Recently I bought a programming book for C, I've been waiting eagerly to start, but I can't because I don't have a text editor or complier. A couple of people have suggested that I download Microsoft Visual. I did this and I tried to write a simple program from the beginning...

Hey. I was wondering if anyone woudl have any good recomendations for large algebra textbooks that cover an enormous amount of material. I would use this book to learn new things, and also as a go to book when I need a quick refrence. So far, I know of only 2: Hungerford, Dummit and Foote.

I want to indent everything after the first line, but not the first line itself. So it needs to come out like this: Physicsforums is a very interesting place where you can learn a whole lot and such and so and such and so. Is this possible?

Hi everybody, I'm taking Quantum Mechanics 1 this semester. Thing is many of my classmates and I feel the professor is horrible and not a good teacher. He is often disorganized and unprepared for class. Problem is there's no way to change him so we're stuck with him. He apparently wants to...

What does it mean when math text authors use the word "pathological"? I have an example right in front of me in fact, but I'm sure you have seen this word before. I've seen it in a few other textbooks, and I'm pretty sure those books were also grad level math related subjects, just can't recall...

Homework Statement please look at equations II.2.8 , II.2.9, II.2.10 in the attached scan, Homework Equations noneThe Attempt at a Solution im unable to get from II.2.8 to II.2.9, i wonder where they got the extra r in the denominator of the stuff in the brackets, here is what i get for...

Lookin' for a good text on Advanced Calculus for self-study. Thanks.

As the title suggests, I'm looking for a good text on Advanced Calculus for self-study. Thanks.

Right now I have Schroeder, and I'm not a fan of it, despite some of the rave reviews I have read. I'm thinking I need another text to learn from while taking this class. I have a copy of Fermi's Thermodynamics (somewhere), but I'm not exactly sure what's in it. I just think it's silly that I'm...

Homework Statement I am attempting to transfer the data from a file into a 2D vector array. The data look like this: 1 2 3 4 5 6 7 8 9 However, the dimensions must be detected dynamically. Homework Equations The Attempt at a Solution There are two files in this code, but I attempted to...

Can anyone recommend a good introductory text? I have studied Fluids, Thermodynamics, Heat Transfer, and Math methods at graduate level. I am in the Aerospace industry if that affects responses. Thanks!

we have just started to learn a new chapter in my physics class about de broglies hypothesis. In my textbook it shows a diagram of a line of electrons being fired at a constant speed, hitting a sheet of thin metal foil and then diffracting. The explanation in my book says ' A narrow beam of...

at what radius can you send peer-to-peer text messages / SMS over "ham radio"? suppose we have lots of people concentrated in a small area, like a college campus. Maybe a mile or so in diameter. We would like to set up a packet switched peer-to-peer SMS transmission using low cost long wave...

Hi there. I'm looking for a good text editor, that also is a good math notation editor. I currently use openoffice as text editor, and I have openoffice.Math but couldn't integrate it with the Writer. Is there a better alternative, remembering I need text and math editor together? Thanks

I am reading Kane - Reflection Groups and Invariant Theory and need help with two of the properties of reflections stated on page 7 (see attachment - Kane _ Reflection Groups and Invariant Theory - pages 6-7) On page 6 Kane mentions he is working in \ell dimensional Euclidean space ie...

He starts using the term 'reducible', as it came out of nowhere, from the page 162 of the text. I know, roughly, what kind of thing he mean by this 'reducible' obejct. (That is that an element is factored into two elements that are not units.) And this should not be a problem if this term is...

Almost half of it's content is online? And expensive? Are you kidding me? http://www.amazon.com/dp/1133110878/?tag=pfamazon01-20 Anyway I'm considering an advanced course in linear algebra, and after researching the library and online reviews I found these 3 texts to be the most famous...

Which universities or instructors---anywhere in the world and particularly in the USA, Canada, UK, Australia, New Zealand, or India---use or have used Tom M. Apostol's landmark textbook on Mathematical Analysis? Are there any video lectures from a course based on the text available on the...

In the past few weeks, I have occasional trouble with my latex expressions (using the itex tag) running over the text that follows them. I also see this in some posts by others. Is there a good way to avoid this? Is it a browser specific problem? ( Mozilla and Firefox are mine.)

Hola While searching the textbook stores online I noticed that Academic math books are generally super expensive, ranging price from $150 to $300. Some texts are a few hundreds, 300 pages and they cost up to $200 or more? Come one? Please don't tell me because they have the hardcover or...

I'm taking a Linear Algebra / Vector Calculus course this semester as part of a maths major for my Comp Sci undergrad. degree. We don't have a prescribed text, but I'd very much like a hard copy of something that I can reference. The course is somewhat compressed compared to what the Maths...

Does anyone know of any good texts that are geared towards creating Physics Engines using c++? Or at the least, a text on creating physics engines in general? Any personal recommendations would be great.