Class Definition and 942 Threads

Hey guys, I'm trying to avoid taking a pre-calculus class so i can take Calculus in the spring. I found resources from OCW which I'm going to use in order to learn on my own in the Fall so I'll be prepared in the spring for Calculus. Can somebody please take 10-15 minutes to look over this...

Is it really that bad to withdraw from a class? I am taking 18 credits and I am taking the following classes: Computer Based Experimentation Classical Mechanics Multivariable Calculus Linear Algebra Computing for math & science Students in Transition Seminar I'm going to drop 1 class, computer...

Homework Statement I was assigned a worksheet for a biomechanics class that had a simple impulse-momentum problem. My instructor and I disagree about the means to solve the problem. "A pitched ball with a mass of 150g (.15kg) reaches a catcher's glove traveling at a velocity of 28m/s...

Homework Statement For any positive integer n determine: \sum\limits^n_{i=0} \frac{1}{i!(n-i)!}Homework Equations I don't really know where to start.. Up until this point we've just been doing permutations, combinations, and determining the coefficient of a certain term in the expansion of a...

Homework Statement I am curious, if I,J, and M are ideals of the commutative ring R, and M/I\subseteqJ/I, then M\subseteqJHomework Equations M/I = { m+I : m is in M} J/I = { j+I : j is in J} I\subseteqR is an ideal if 1.) if a and b are in I then a+b is in I 2.) if r is in R and a is in I...

Homework Statement ~ is a equivalence relation on integers defined as: a~b if and only if 2a+3b is divisible by 5 What is the equivalence class of 0 Homework Equations The Attempt at a Solution [0] = {0, 5n} n is an integer My reasoning for choosing 0 is that if a=0...

Homework Statement Consider a football field. Standing along the sideline are 100 people, on person at each 1-yard hash mark. The first person weighs 30kg, the next 3kg, and so on up to 130kg. The people can only move in straight lines toward the opposite sideline. At a particular moment...

For my Java programming course, I have been asked to create a class called Parliament & describe its key states and behaviours. I know that key states describe what an object is and behaviours describe what an object does. I've also been advised to base an object's state and behaviour by picking...

I added a class before the add due date, but dropped it right after by accident (after the drop due date). Now, I received a grade R in the class, which I'm guessing means incomplete or something. The time in between which I added and dropped right after is less than like 20 seconds. What can I do?

Hi all, (sorry for the length) I am an Applied Physics major in her senior year (yay!) at a liberal arts college. I have a double minor in Mathematics and Computational Physical Sciences (aka Programming, but not Comp Sci.) Because of the way the sciences are set up at my college, it's...

I need some example driven learning material for my "singular perturbation" class. Someone help me please.

After reading the math book and solving the math problems, I understand the material. So why attend math class, where after I read the book, I find so boring and unnecessary? Is it because going to math class makes it more likely that you will read your book and do your homework? I feel like...

I'm taking an intro to proof's class this semester. What are your thoughts on Velleman's How to prove it book? Are the exercises easy or hard to do?

Hi, as we know a density operator \rho is defined to be a non-negative definite operator of trace class (with trace 1). We also know that for a given observable A, which is a (possibly unbounded) self-adjoint operator, the expectation value can be calculated as \operatorname{tr}(A \cdot...

So this should be simple. but i don't know why it isn't working. so, I have one class called OdometerBuilder with a method in it. (not a main) inside that method is like 40 lines of code. I am required to take out that code and make it into a separate class and method, done that. Now i need...

My name is Frederico Cantarelli. I am a Lindenwood University student, located in Saint Charles Missouri. I am senior level majoring in Business Admnistration! I will explain my situation on the lines below. For graduate in Business Admnistration at Lindenwood University, i will need 128...

Hello all! I know they are out there, but I think that I can learn a lot by creating my own. I do not want to get too convoluted with optimizing this thing, but I was hoping some folks could offer some input. I am narrowing the scope of this project so that the goal is to end up with a...

Hello all, my issue is in calling the attributes of a 3d vector class in python, this is the class I was working with: import math class Vec3: ''' A three dimensional vector ''' def __init__(self, v_x=0, v_y=0, v_z=0): self.set( v_x, v_y, v_z ) def set(self, v_x=0...

I need to know how does it operate. The textbook that we got doesn't state clearly. Can anyone guide me on how a class AB power amp work stage by stage ? Thanks in advance.

After you have analyzed the existing material used by the company for their day-to-day duties, the current Access database, and the additional requirements that the current system does not meet, the following requirements entity/attributes have been compiled: Customer information is tracked...

I've been told that usually Mech Eng's or Aerospace Eng's take this class, haven't heard much for EE's but it definitely sounds interesting. Advanced Engineering Calculus - Extends the treatment of engineering mathematics beyond the topics covered in Calculus 3 and differential equations...

Hello all; I have a homework 'question' I'm hoping I can get some help with here. For my Introduction to Mechanical Engineering class, we have been tasked with writing a technical paper and there is a portion of the mark dedicated to using social media and the internet to enhance the paper...

So I am participating in a program that allows me to take classes at a local university and the counselor suggested that because I plan to go into physics when I go off to college (I will be a high school senior next year) it would be a good idea to take the honors introductory course that is...

why intersection of empty class of sets is the whole space while their union is null set? Book writes that an element will fail to be in the intersection if it fails to be in one of the sets of the class but since there is nothing in the empty class so there is nothing in the empty class that...

And not taking ODE's? Is this doable? I understand the basics of most concepts as I am currently self-learning from online resources and textbooks, but I decided not take the class during the summer as I'm already taking calc III. The problem is that when the year starts up again PDE's is taught...

It's horrible! Despicable! I have to take Intro to Mathematical Reasoning, which is the proofs course at my university. I was planning on taking it this fall so I can take Advanced Calculus (the real analysis track prereq) and PDE in the spring. Math Reasoning is the prereq to both of them an...

I am finally getting my feet wet, actually taking math courses that apply to my degree. Anyone have any suggestion what I should be studying before I take the class? I have borrowed a book from a local library called "Calculus Essentials for Dummies." I have a friend who is in calc 3, I...

Calculus 3 Physics 2 US History and the World Circuit Analysis I seen my friends struggle in Calculus 3, only to realize it was because of a poor foundation in the previous Calcs. They said Physics 2 was harder than 1 but more enjoyable in the lab. The history class is what i expect from...

Where can I find class size information for math phd programs? In physics the class sizes seem to be larger (>20). However, It seems like math phd programs on average have only 15 new grad students per year. I can't find the specific information anywhere though. What would be the average class...

This is not really a homework question per se but I wasn't sure where else to put it: In a script I'm reading the following set is defined: P(n)_k := \{p \in S(n) | p^2 = p, \text{trace } p = k\} (i.e. the set of all real orthogonal projection matrices with trace k). Now the following...

Hi there, does anyone know a software or program that i can use to quickly sketch / draw and write as if i was writing in pencil ? For instance, paint is of no use, because it can't be edited. Photoshop is kind of hard to simply make straight or curvy lines without too much trouble. So...

Ahoy, Next semester I am taking Calc 3 and I would like to prepair over the summer so that it is not so daunting. If anyone can suggest a "...For Dummies" type book which would give me good examples and equations along with ample example problems that would be great. P.S. I already know...

Hello, Next semester I will be taking a class in Special Relativity through UIUC. Its only a 200 level course titled Relativity and math applications but I would really like to go in with a base. If anyone could give me some book suggestions which would contain practice problems and the like but...

Hi all, So the equivalence class X/\sim is the set of all equivalences classes [x]. I was wondering if there was a way of writing it in terms of the usual quotient operation: G/N=\{gN\ |\ g\in G\}? From what I've read, it would be something like X/\sim = X/[e]. But, since I'm looking at the de...

Homework Statement Question Anna is calculating the mean and standard deviation for a set of data for a random variable X. The data is summarised in the table below. x: 10– 20– 30– 40–50 Frequency: 8 20 12 0 (i) For each of the following cases, write...

Homework Statement As part of a larger proof, I'm trying to show that ||fn|| --> ||f|| implies <fn> --> f in Lp, where <fn> is a sequence of functions in Lp, 1≤p<∞, which converge a.e. to a function f in Lp. Homework Equations ||f|| = (∫|f|p)1/p. The Attempt at a Solution There's some...

Homework Statement Gravity = 10m/s/s The quotes are tables i just couldn't figure out how to make them. I don't know if velocity is suppose to change but i used 30 for each making the assumption its how hard the initial throw was.Homework Equations I don't know exactly what the teacher wants...

I'm relatively new to Objective C. I know I'm using C strings instead of NSStrings, but I'm more comfortable with them. And I know this is probably a bad example of Object-oriented programming, but this is for the sake of example. #import <Foundation/Foundation.h> @interface Greeter ...

In C++, pretty much any global main() function gets run. In C#, amy class's Main() method gets run, and having multiple Main() methods in multiple classes should give a compilation error(?). But if we have a .jar, when running it, how do we know which class's main() method the .jar will run?

I'm taking my first upper tier physics class in fall 2012 Analytical Mechanics. I know that the calculus of variation is fundamental to understanding the Lagrangian and because this will be the only classical mechanics class I will take in my undergrad I want to understand it well. Do you think...

Homework Statement One part of this problem is the following: Give the IUPAC name for each of the following: Ti(CO3)2 I thought it would be diTitanium Carbon Trioxide But its apparently Titanium carbonate Can someone please try and explain this better for me so I can...

I am trying to use Queuing Theory to do some computer architecture studies . Is there any mathematical treatment of Queuing Theory in which there is single queue but multiple classes of traffic along with multiple servers such that for every class of traffic there is one dedicated server...

This is somewhat of a tradition at this point on PF, so I figured I'd start. What's everyone's summer and fall schedules look like? My summer: Vector Calculus - using Marsden's book American Literature - five weeks of fun and adventure Mechanics of Solids - five weeks of pain and misery...

I'm looking for Links, books, and terms associated with the increase in mechanization, automatization, and efficiency of future economies. Think of the future where people who work at supermarkets, fast food chains, the postal service, or as truck drivers, construction workers, landscapers...

I'm going to be taking a class in ordinary differential equations over the summer and have about 2 weeks to prepare. The class has linear algebra as a prerequisite, and I just wanted to know what I would need to review from linear algebra to prepare myself for the course?

i tried to debug the following code and it crashes in the end at the curly bracket } i think i have a problem in the destructor .. Can anybody tell me why this happens ?? knowing that the Matrix extends and shrinks as i wish and all the functions work perfectly...

As an exercise, I'm trying to compute the class number of K = \mathbb{Q}(\sqrt{30}). By the Minkowski bound, I just need to consider the prime ideals which divide 2,3,5. I've found that (2) = \mathfrak{p}^2_2 (3) = \mathfrak{p}^2_3 (5) = \mathfrak{p}^2_5 where...

I have a pretty urgent question concerning the calculation of the class group, so any help will be very much appreciated:) I'd like to illustrate my question with an example: Calculate the ideal class group of Q(√-17), giving a representative ideal for each ideal class and a description of the...

Homework Statement I have to show that if there is a mobius transformation p such that m=p°n°p^{-1} forms an equivalence class. Homework Equations need to show that aRa, if aRb then bRa, and if aRb and bRc then aRc The Attempt at a Solution well.. for aRa I somehow need to show...

Hello physicsforums next semester i have a bit of an awkward schedule because i changed majors. this left me with in a strange spot where i can take another math class. here are my choices Abstract Algebra pros +i am pretty interested in it due to some exposure in linear algebra +I...