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Common math questions, quality answers.
Jul24-14 10:02 AM Greg Bernhardt 
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Test your skills. Math challenges will be posted at least once a week. Suggestions for problems are welcomed. Brought to you by Office_Shredder.
Jul31-14 12:54 PM pasmith 
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Jan16-12 Greg Bernhardt
Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:23 AM
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In the derivation of a cycloid, it says (pg. 655 Stewart, 5th ed) |OT| = \text{arc} \ PT = r \theta . I was just...
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in the following i will demonstrate a 'proof' that 1+1=0 1+1=√1 +1 =√(-1)(-1) +1 = (√(-1))(√(-1)) +1 ...
Feb20-14 12:09 PM
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In the bionomial expansion (1+x)^p , p can be integer or fraction. The coefficients are written as p ...
Jul11-10 09:10 AM
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Whyyyyyy??! Whhhhhy?!!!?
May12-11 06:47 AM
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In science proving something by making it linear is a cmmon approach. For instance you can write some laws on this...
Feb10-07 06:00 AM
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Hello all, I'm in the process of working on developing a course to prepare students for calculus. The emphasis is...
Feb11-09 01:34 PM
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Long story short, I've been looking for a program that can produce graphs like mathematica and manipulate 3D objects...
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1) in my exams there were 3 simple questions on integration carrying 5 marks each, i solved them correctly but the...
May18-10 02:37 AM
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Dear all, i'm trying to understand geometry by studying the subject myself. i came across idea that i'm very much...
Jul31-13 07:47 PM
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what in the world does this mean: Is this algebra 2?
Apr24-04 08:29 AM
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? ?
Aug21-08 05:26 PM
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Hello everyone A question in complex numbers If inflicted P = q par There is a point of equality:...
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I need to draw a graph. According to the directions, I need to, "supress the origin of the abscissa so that the range...
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Any suggestion on how to improve your reading fluency with proofs of theorems? It's frustrating to spend over 1...
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I will be doing my final, third year of undergrad next year and will be doing intro subjects to the main areas of pure...
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i am a programmer really, and i am trying to make a program that allows the user to select 1 of a few methods to...
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Hi there I'm having trouble solving this integral!! Evaluate the improper integral intdx where the upper...
Aug13-03 05:57 AM
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How do you get this: \int_{-\infty}^{\infty}e^{-(ax^2+b/x^2)}dx = \sqrt{\frac{\pi}{a}}e^{-2\sqrt{ab}} I've been...
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My Latin teacher is a retired nuclear physicist. He is a very smart guy. Sometimes, he shows us things called ABL...
Mar20-04 12:23 PM
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A question at the end of a chapter in a book I'm reading asked me to prove something which I'm thinking is a mistake...
Jun2-10 10:39 AM
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To the impossible ineqaulity of another thread let me add two new ones 1)1/x +1/y +1/z >= 2/x+y + 2/y+z +2/z+x for...
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Hi, I know its possible to get an answer by graphing the curves and finding the point of intersection but I was...
Jun28-09 05:32 PM
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after it was found out that the first 9 pi digits 141592653 result in the end sum of 9, i searched for its iteration...
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If you notice that there is symmetry in the numbers 0 to 10 this is a good place to start with what I want to talk...
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Hi PPls okay i have studied calculus and i can easily see its application in many things like calculating...
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I know Binomial Theorem is a quick way of expanding a Binomial Expression that has been raised to some power i.e...
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Hi, Haven't studied math for a while and thought I'd ask you for help. It regards implied correlation based on...
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Hi all, In studying the eigenvalues of certain tri-diagonal matrices I have encountered a problem of the following...
Nov21-12 12:51 PM
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Can anybody give me links to download software that can plot implicit functions like x^2 + xy =9 etc. I have searched...
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Hi. I'm taking a Calculus course right now and I simply cannot understand Implicit Differentiation or the Related Rate...
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Could someone please explain to me how implicit differentiation is an application of the chain rule? It would be much...
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I have been able to follow how to take the derivative of implicit functions, such as: x^2+y^2-1=0 ...
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The truth table for implication looks like this p|q| p -> q ------------ T|T | T T|F | F F|T | T <----I'm...
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I'm now implementing different kinds of Particle Filters using Matlab. One is the Regularized Particle Filter(RPF) and...
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In 2006, the mathematically rigorous proof of the Poincaré conjecture was completely excepted. The Poincaré conjecture...
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Hello, I was not sure quite where to post this but settles on here. I am a 15 year old and I am having an issue. I...
Sep14-13 04:13 AM
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Ok, this is driving me crazy: i^{2}=-1 no problem here, but...
Jul18-07 12:58 PM
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Hello. I can't understand some things in these two files attached with this thread. Firstly,in file "image 1",i don't...
Jun2-08 01:15 PM
electronic engineer
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Hello; You can have positive integer derivatives, such as this: \frac{d^{2}}{dx^{2}}(x^{2}) = 2 You can have...
Jan2-11 07:53 AM
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