Class Definition and 909 Threads

Homework Statement Let f be a non-zero continuous function. Prove or disprove that there exists a unique, real number, x, such that the integral from 0 to x of f(s) w.r.t. s = pi. Homework Equations If any exist, please let me know. The Attempt at a Solution...

Hello Everybody I am a Physics Major transferring to Michigan State University next semester. I have completed Calculus based Physics 1 and 2, as well as Calculus 1,2,3, Linear Algebra, and Differential Equations. I am wondering which kind of math class some of you may recommend to take next...

Hello. I have this JAVA code, I have to change only class "LS", so that program gets sum and displays it. But I don't know how to get command line arguments to LS class (I need them in "??", to get sum). Can anyone help? :) public class S { public static void main(String[] args)...

I am currently a sophomore physics student taking a pretty rough course load and am struggling quite more than was expected. I took computer programming as a class "for fun" but it is totally blowing me away. I think I currently have a C in the class and it does not appear to be getting...

So here's the slight problem I'm running into. I have this Physics class that's not really going as planned. I understand the information, I'm just (slightly) bombing the tests. I get all of the questions involving numbers, but the "supposed something visually and tell me what the ball does"...

Homework Statement I have: - 1 class to read a data series (see text file attached) (series.h and series.cpp) - 1 class for a function (function.h and function.cpp) I'm trying to create another class which has input from 2 above class (as constant references) and produce output which has...

I started doing organic chemistry lab a few weeks ago and the instructor is an evil bastard when it comes to marking lab reports. We've 2 reports to do per week and I spend at least 6 hours on each report but only manage to get 60%. I can't be wasting all this time on a single class. Are there...

Hi all, I'm a graduate student and while I was reading about measure theory I stuck at this question , can anyone help? Let the function f: R->R be continuous except on a countable set. Show that f belongs to Baire class 1 of functions. For the solution I see 2 ways : 1. We need to...

I'm a freshman ChemE major. I have 15 credits lined up for next semester but want to add one more class since one is a PE, one is a non-intensive honors class, and one is economics. Should I take Java or an intro to Linear Algebra class? I have no experience with Java, and the intro class...

So I'm studying molecules and symmetry and I was wondering if there was a intuitive way of understanding why there are as many irreducible representations as there are classes. I keep getting lost in the math of the characters.

Here is my problem. Consider the matrices A = \left(\begin{array}{ccc}0&i&2\\0&1&0\\1&0&0\end{array}\right) and B = \left(\begin{array}{ccc}2&i&0\\3&1&5\\0&-i&-2\end{array}\right) Calculate A-1B andBA-1. Are they equal? Hint: find the inverse of A in the diagonal basis. I am really not...

This my basic understanding of it. I would appreciate if someone can correct me if I am wrong. When a tank circuit at the output of a class C is tuned to the input signal, it energizes the tank signal on every cycle of the tank voltage. When you set it to a 2nd harmonic for example it...

I missed a day of school due to sickness and while I was out the class went over isomers in our organic chemistry unit. I copied the notes down but quite frankly I am confused as hell about how to find them. Can someone please explain them to me.

Homework Statement ac | bc if and only if a | b (Note that this is really two implications.) 2. The attempt at a solution The only way I can see going about this proof is by using examples. I know that in ac | bc the c will cancel out in both, but I don't know how to properly word...

I've been up for hours trying to figure out the proper notation to prove problem #4 (1.6.5) on the attached files. I'm not sure how to set this up. It is basically proving the product rule using the gradient of two functions. The rest of the problem is on the backside file, but help getting...

At the moment, I'm studying Physics. Let's say that in my first year I have scored 89%. How many students on average would get that score? Does that result mean that I am on track for receiving offers of admission at MIT, Princeton...for graduate studies, given I keep getting such results in...

Hello, I am a sophomore and I need to conduct an interview on an engineer in the field i wish to enter into one day, so i was looking for a mechanical engineer, so if someone could get back to me as soon as possible that would be great, thanks for your time, Kevin.Reid414

At my university, it's a junior-level class, and mine is being taught by the physics associate chair. It's very fast-paced, and he told us the first day of class he would give us the hardest homework problems in the book. Well, he does. Aside from this site and finding solutions online to help...

I am a freshman in college and I am in multivariable calculus, I took the first AP calc in high school. I am deciding to walk in on an Ordinary Differential Equations class. It is apparently graduate and I didn't understand a single thing in there. I didn't understand anything mainly because I...

I'm considering taking an RF circuit design class that would focus heavily on transmission lines and microwave circuits. It's supposed to be a tough class but I think I would enjoy it because I really like E&M. The problem is that if I take this class I won't be able to take a photonics class...

I start Quantum Mechanics on tuesday, and I was just wondering how hard or easy is the classes Thank you

I am wondering if the following mod 2 cohomology class which can be defined on any compact surface, has any geometric meaning or is important in any way. triangulate the surface then take the first barycentric subdivision. This is a new triangulation. Define a 1 - cochain on this new...

my sis in class 12th & she needs 2 submit a bio project which carries 5 marks .since i m not a bio student i can't tell her anything.. please suggest a good bio project in bio.

Hi all, I am new to topology & geometry. I skimmed through the subject in various books so I might be asking simple questions. My question is how can we say Chern's class belong to Integer rather than Real cohomology class? I assume one defines it through the characteristic polynomial of...

Not quite sure how central angles ended up in a PreCalc class, but oh well. Okay so, I'm given this picture And this information: A satellite is in orbit 2000 kilometers above the Earth. It is scheduled to pass directly over a tracking station at noon. The satellite takes 2 hours to make...

I am currently producing an exam paper. My friend suggests me using the exam document class. It's quite convenient most the time and I almost finish my work. But there are 2 things that I am not satisfied with: (1)the default spacing between questions, parts, subquestions How can I adjust the...

Hello All, I have an undergrad physics degree. I've been studying GR on my own for a while, including Hartle, Schutz, Carroll, etc. There is NO GR course offered this fall in the state of CO, which is where I live. This fall I'd like to take a real ONLINE class in beginning GR included...

how can i access the private variables of a class from another class? for example... class One{ public: One(); private: int array[6][7] }; class Two{ public: Two(); private: void printNumbers(); }; void Two::printNumbers(){ // i want to...

I am just going into my fourth year of a 4 year MSci course and have got my results from my third year. It's not as good as I had hoped and my average is a 2.1. I know that Cosmology is very difficult to get into and PhD's are over subscribed. I was also hoping to work at one of the...

Im a rising junior in the US starting my upper division physics classes. I have an opening this quarter and want to take an applied math course, but cannot decide between these two: In the mathematics department: "Applied complex anlysis Introduction to complex functions and their applications...

Electric Engineering Curriculum no programming class? http://www2.eng.usf.edu/studentServices/docs/guides/Curriculum20092010.pdf So if you open that pdf and go to page 8 "Bachelor of Science in Electrical Engineering" i don't need to take any programming class? how come??

Here is the thing that I noticed in most Physics and Mathematics courses, I noticed that no matter how poor our professor is, no matter how poorly written the textbook is, and no matter how everyone studies 24/7, somehow, for just some reason, everyone always scores the mean, in other words, no...

Homework Statement Definition: If A is a set and if ~ is an equivalence relation on A, then the equivalence class of a\inA is the set {x\inA l a~x}. We write it as cl(a)Let S be the set of all integer. Given a,b \in S, define a~b if a-b is an even integer. so, the equivalent class of a...

Hi guys, I am of a Mechanical Engineering background, however my dissertation has a largely optics based focus, and I am struggling with understanding the heating effect of a Laser. I will be using various wavelength ND:Yag lasers, and will be focussing them onto a target material, which...

I am an engineering major at a large research university. This upcoming fall, one of my classes is taught by the Dean of the Engineering Department. Almost all scholarships within the engineering department are "selected by faculty," without an application process, so my impression could have...

Homework Statement "Prove that if x is an element of [y] then [x] = [y]"

Homework Statement Suppose [d], [b] \in Z sub n.

In class my professor for thermodynamics made the following deduction: We write dE = \left( \frac{dE}{dT} \right)_V dT + \left( \frac{dE}{dV} \right)_T dV And from the first law: dE = dQ - PdV * Equating and cancelling dE gives: (1) dQ = \left( \frac{dE}{dT} \right)_V dT + \left(...

Should I take Calc I concurrently with Physics I or take only Calc I my first semester(then stagger the Physics/Calc curriculum for future semesters)? I've heard posters mention that taking Calc I then starting Physics a semester late is better for E&M later on. Any advice? Thanks.

So in January i averaged 70% in my exams which is borderline first class (in uk). So I am just wondering what the trick is for you people who get really high grades? I just come out of an exam, studied really hard for it but know I only just about passed. How do you brain boxes manage to...

Question one Homework Statement x[n] = 5sin(0.22*pi) The root mean square (RMS) value eof a sin wave is known to be A/root(2) where A is the amplitude. If the noise in a system is known to have an RMS value of 0.5, what si the signal to noise ration (in dB) of the x[n] in this syetem...

Hello, Has anyone done this? It may be considered very rude, but it's pretty custom among math/physics majors to do the coursework and just skip their classes (and in fact some math/science profs recognize this). The reason to do this, of course, is time. I generally find it quite difficult...

So we have an egg drop project due at the end of the semester for my introductory physics class. We're dropping it from the second story, which is about 3 meters down I believe. The materials we are given are 20 drinking straws, 30 cm of tape, and 1 8x11 piece of paper that we can cut/fold and...

I'm at a good school but I really dislike my writing teacher... It's such drugery right now. I'm afraid I may get a C so I want to withdraw halfway now and take it later with much nicer instructors. which looks less bad on my transcript: C or W? Thanks. EE major

Homework Statement Find the equivalence class [2] for the following equivalence relations: a) R: Z <-> Z, where xRy, iff |x| = |y| b) T: N <-> N, where xTy, iff xmod4 = ymod4 N means natural numbers etc...there wasnt the correct symbols in the latex reference Homework Equations ?? The...

I need to take Pre-Calculus before this Fall. There's only two choices, either take it online or CLEP it (test for credit). I can't take an in person class because my job's schedule is too nuts. Has anyone ever taken a Math class online? Is it worth it? Thanks for your help.

hey,guys,i want to choose Aerospace engineering as my career field in two years ,i want to know do i need to go to any programming class or overall which class would you recommend me to go ? thanks:approve:

I love physics, especially particle and astronomical physics, and for my intel research class which I will be taking next year, I would like to study them more. For this class, I need to choose a topic of study to which the answer is unknown or poorly understood and "play scientist" for a year...

Hi, I am trying to show that for M a 4-manifold, and [a]_2 a class in H_2(M,Z) , there is always a surface that represents [a]_2 , i.e., there exists a surface S , and an embedding i of S into M , with [ioS]_2 =[a]_2. (Equiv.: there exists S, and an embedding i of S of...

OK, I'm going to pick my class for high school in a few days. I wondering if I want to be a robotics engineer what classes should I take ? Also, what type of robotics engineer is there?