Class Definition and 909 Threads

I never really had much math back ground and I was lucky I passed high school math. I was in the hospital a lot, I think my teacher felt sorry for me and gave me a passing grade, so I could get my HS diploma. I decided to go to college and I took my placement tests and they placed me in...

My computer science course is currently going over defining classes in C++. We do three things: 1) Create a header file that declares the class and save it as the class name appended with .h 2) Create a file that includes the header file in (1) and implements the class functions and save it...

This is my first semester as a EE undergrad and I'm having difficulty with my telecom class. These are my current classes: Physics Calculus Intro to C Programming Electronics and telecommunications. Everything else is fine. For telecom, I don't know why they are making us do it in the...

So my understanding is an abstract class is one with at least one abstract method ( ie cannot be executed). It can therefore not bei nstantiated (not entirely sure what instantiated means) An interface I am a bit more confused about. first of all i thought it was where unrelated objects...

hi. i am a freshman majoring in mechanical engineering and i really love math. i am in calculus II right now during my first semester. as a mechanical engineering major, my university requires that engineers only take calculus I, II, and III and differential equations. i already had a bunch of...

My current Physics class which is a regular physics calc based mechanics class isn't very difficult. Actually I already took the class in H.S and got a 5 on the AP Physics C exam. I decided to retake the class because I thought I didn't know enough Mechanics and that it would be good to...

Hi, I have what i think must be a really basic question. What is meant by a class, object, instance and attribute in programming? In simple terms (i don't know computing at all). I thought a class was basically something that could be represented as a noun in everyday life, an object is an...

If you wanted to put ints, doubles, strings into your own container class how would you do it?

Hello, I am a graduate student and I currently taking a class that is unrelated to anything that I am doing in my research or field of study. I was told by my graduate advisor that I would need another class this semester, however, that turns out to be incorrect and I no longer need this...

Greetings, First of all I believe this is the right forum as it isn't necessarily homework but more of a discussion about possible projects/experiments for a modern physics class. If it is in the incorrect forum could a mod please move it. I am currently taking a physics 3 course that...

My teacher was going over a thevenin and norton circuit and i understand the thevenin and norton part of it, but the part that confused me was when he did the node voltage at the 2 circled nodes to find Ix. I understand why the bottom node would be zero because it is the reference node but why...

As the title says I want to go into Medical Physics. I have one more course requirement to finish my undergrad at the end of the spring semester. None of the courses are offered so I will have to do a independent study to replace one of these classes: Biophysics, Analytical Mechanics, or E&M II...

So, this semester I am taking Calc2 (6 credits here), Physics1 (4 credits), Linear Algebra (3 credits), and OrganicChem1 (4 credits). My Organic Chemistry course is at a strange time on Sundays and it's really inconvenient to attend. On top of that, it's only one day a week, which is awkward...

I am learning about the ArrayList class in my java programming II class. I am wondering why you would specify an arrayList to only contain, for example, strings: ArrayList <String> arrayName = new ArrayList <String> (); versus ArrayList arrayName = new ArrayList (); in which, to my...

Do any students here (or faculty for that matter) actually ride a bicycle to class? For the past few weeks I have been thinking it's a good idea. I live something like 2 miles from my university, and there are virtually no busy intersections that I would have to cross. Lately, traffic has...

I'm not really a big fan of computers but I understand there importance to physics. My school offers computer programming classes for engineering and science majors but I don't want a extra formal class that isn't required. Do you think it would be a good idea to self learn all of the programming?

Is reading the Principia a good idea as a supplement for my physics Mechanics class I will be taking this year. The class is a 1st year class btw, I feel by reading it along with my textbook and lectures I will be able to develop a very deep understanding of Mechanics. Do you guys think it's a...

I'm currently in this grad class, but I have serious doubts I have enough time on my hands from my busy schedule to do well in this class. As a result, I'm considering to just audit the course, which in my university means: "to go to the class without any official recognition." In other words...

I'm going to be starting my first year in college soon as a physics Major and I have very high standards when it comes to physics. Last year I took AP physics C Mechanics and E@M, the problem was that I had 10 other classes in high school so I couldn't devote proper time to physics. So I noticed...

Hi, I have a class, say myclass and it takes two strings (let s and g ) and one int ( say i) as its arguments. It looks like, public class { String s , g; int i ; public void myclass(String sname, String gname, int k){ s = sname; g = gname; i = k; } } Now, I have several...

Often I feel like sitting in class is pointless. Some stuff I already know from reading the book and the stuff I don't know is done too fast for me to learn anything from it. I need to look over examples and new material multiple times before getting it. Video lectures like the ones from MIT for...

I'm planning on continuing my education after about a ten year break. I originally got an AAS in criminal justice. Then I left the country for a long time. Anyway, I'm back now and I'd like your advice. I'm planning on doing some math and science classes at the local community college before...

Background: I'm going to be a junior, having very strong Analysis and Algebra yearlong sequences, in addition to a very intense Topology class, and a graduate Dynamical Systems class. For this coming Fall, I'm sort-of registered for this class, titled "Manifolds and Topology I" (part of a...

So I've been contacted by a Community college I was hoping to get a small job teaching a 6 hour/week course for some extra money. The course starts monday the 15th but the interview won't take place until the week classes start! Has anyone ever heard of this? My contact said that I will...

Homework Statement V=Matrix (2x2), T(A) = (0 1 ) A , and W = {A\epsilon V: A^{}t = A (1 0) Homework Equations So T(A) transformation, multiplies a 2x2 matix with entries 0 1 1 0 by A with A on the right side The Attempt at a Solution I...

I just came across another question while brushing up on my c++. If you have a base class that uses virtual methods, when you try to use it to define a derived class then you *need* to prefix the base class name with "public", as in the following example. class ExampleBaseClass { ...

Hi, All: I am trying to figure out the mapping class groupof the torus ; more accurately, I am trying to show that it is equal to SL(2,Z). The method: every homeomorphism h: <\tex> T^2 -->T^2<tex> gives rise to, aka, induces an isomorphism g: <\tex> \mathbb pi_1(T^2)-->\mathbb...

The class is Calc III (multivariable), and I'm taking it online this summer. It ends in about two weeks, and I have 16 1-hour lectures left to watch. This class is horrible. The professor simply reads out of the book then expands on these ideas. However, he is often wrong and spends 10...

Have been reading up on tesseracts lately and I was wondering what class in college if any include the learning of these. Was thinking it would be a physics class of some sort but at the same time it could be a math class too.

Homework Statement Let A be the set of all integers x such that x is = k2 for some integer k Let B be the set of all integers x such that the square root of x, SQRT(x), is an integer Give a formal proof that A = B. Remember you must prove two things: (1) if x is in A, then x is in B, AND...

Just started my physics class. Already need help! Homework Statement A tiger leaps horizontally from a 5.5 m high rock with a speed of 3.1 m/s. So I know Height=5.5 meters Initial Velocity=3.1 m/s Homework Equations How far from the base of the rock will she land?The Attempt at a Solution I...

Hello again PF, I've been doing some light reading on different magnetic fields of different gas giants, and what was really fascinating is how different Uranus and Neptune's fields were from Jupiter's and Saturn's, due to their different mass and composition? What I read was that both of...

I really want to get a programming internship next summer. Which one of these classes would be the best preparation for one? Object Oriented and Advanced Programming (difficulty: very hard) Database Management Systems (difficulty: moderate) User Interface Development (difficulty: moderate)

Hello, I'm using the article class with a table of contents. Everything works fine, except one point: The List of Figures, List of Tables and the Bibliography appars in the Contens with no points between the Name and the Page where they are. For example: Contents 1 Section 1...

casting in java...&& wrapper class Homework Statement well my question is quite simple. 1..) when a vector is instantiated ,does it needs to have a particular data type like integer,employee... like in case of array or does any object can be put into it irrespective of its name... example...

I need to locate an online Pre-Calculus Class that I can start ASAP and finish by August 22nd. This is very important to me. Otherwise I can not register for two classes I wish to take this Fall. I have already had Pre-Calculus once but under less than ideal circumstances (family, financial, and...

I'm about to fail a class, because the exam is in 4 days and I haven't studied anything about it the whole semester. I really don't feel like studying 12 hours a day until the exam to then get a low grade just to pass this class. Is it too bad if I do it next year? Does anybody care about that...

Hey guys, I'm doing a four year degree course in theoretical physics (British/Irish). I got a 1.1 (first class honours) in last year's examinations (74.75%), which was in second year and counted for 10% of the marks. This year I only managed 58%, which is a 2.2 (second class honours, grade 2)...

Homework Statement So I'm teaching a year 8 (12 year olds) class on air or the properties of air. Does anyone have any ideas of what I should tell them or how to explain these properties in a understandable way? Homework Equations In the document that I have been given it says that I...

How do I go about getting a good grade in thermo? I'm a chemical engineering major and I am scared ****less about this class. I am taking it this fall. I've heard horror stories, and my cousin, who I consider to be a pretty sharp guy is having a really hard time with it. Any textbooks you...

Okay I just checked out my ODE professor's site for next year and I notice that all of her assignments are writing-based... I've attached one of the sample assignments (there are like four writing assignments in one semester...), the marking scheme and a sample article I am a little worried...

In a couple weeks, I'm going to be teaching a summer calculus class and I wanted to introduce my students to the mathematical software that can be used. However, where I teach they do not have maple or mathematica, so I have to use one of the open source programs (octave, maxima, scilab etc)...

Homework Statement Five-sixths of the students in class are passing with a grade of C− or better. Three-fourths of the students in the same class are passing with a grade of B− or better. What fraction of the class is not passing with a grade of B− or better but is passing with a grade...

Whats normal with wait lists? Usually, how many people get into the class? Like typical or average? Every single person gets in who from the wait list most of the time, or?

Hi all, I have read this forum on and off for a couple years' now and have finally started the road to calculus. I have a BA in Econ already (2001) and took the "Business Calc" class way back (that's what the minimum was). I find myself in a technical career (not Econ related), but have...

How to get "Ahead of the class"? Hello Im starting an Access course to physics in september and would like to know what I can be doing to put me in a better position for when i start. I intend on going on to Ph.D level but have no A levels in maths or Physics so i have to start somewhere...

Homework Statement 1962N Load 5 m from effort (hydraulic ram) and fulcrum 1m from effort. Calculate the Velocity ratio, if work input is 3000j calculate work output. Homework Equations VR = distance moved by effort / distance moved by load effort = 11772N MA = load / effort =...

Homework Statement Let n\,\in\,\mathbb{N}. Let F be a field, and suppose that p(x)\,\in\,F[x] is a polynomial of degree (n + 1). Let S be the set: S\,=\,\left\{\left(a_0,\,\ldots,\,a_n\right)\,:\,a_i\,\in\,F\right\} Define \phi: S\,\rightarrow\,F[x]/\left(p(x)\right) via...

For a math class the school says that you study 2-3hours per hour of lecture,well, by study what do they mean? Does the 2-3 hours include doing homework, or is that just additional time on top of the 2-3 hours that they want spent studying for every hour of the lecture of the course?

I'm trying to write a simple program to calculate the impedance of an AC circuit consisting of an arbitrary number of resistors, capacitors and inductors combined in series or parallel. First I ask the user to create the components they wish to use in the circuit, and this is where I hit the...