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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.
Y 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...
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I was tutoring someone for an intro mathematical logic class and there were a few problems about proving something is...
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How can I find the derivative of a step function?
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Hey guys, this is a little silly question but it bothers me. Im not a math genius (yet i hope) and im still in...
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Hi everyone. I hope this is in the proper place - not sure where to put it. Anyway, I am working on an optimization...
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I am a little confused about how exactly vectors are used. For example, if we had the two statements \vec{r} =...
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I am reading through Borwein's paper, "Fast evaluation of the gamma function for small rational fractions using...
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I was wondering if there is a field of mathematics which lies beyond and higher than abstract algebra? If it exists...
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I have heard that the Borwein/Zucker algorithm for computing certain values of the gamma function is pretty awesome,...
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Hi. I'm wondering if it's an acceptable method of measuring distance between two objects of known size by averaging...
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The problem I am having is a problem in my textbook. It says that if we have xy Cartesian coordinate system, and if we...
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I was wondering how that could be done. I...
Jul30-14 08:47 AM
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I'm having a problem understanding exactly why trig functions are defined the way they are. Of course, the definition...
Jul30-14 05:22 AM
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So, out of curiosity, when you guys see log(x) do you assume base 10 or base e? Because I just wasted 2 hours of...
Jul30-14 03:15 AM
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I'm reading a book - and I've been stuck for a while on the same page. This is only a calculus question. We have the...
Jul29-14 09:12 PM
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Hey guys, I'm puzzling a bit over an example I read in Rudin's Principles of Mathematical Analysis. He has just...
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Hello, i'm working through Lang's 'Introduction To Linear Algebra' and am on page 18 (in case any of you are...
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This is not a high school question, but it seems to be too broad to fit in any of the other categories. Fractals are...
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Hi, I found this derivation at wiki: Can someone tell me if the theorem...
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I know not all shapes satisfy this relationship, but what is your intuition behind this formula that finds area...
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Hi there, Consider a related rates problem, Gas is being added into a balloon at a rate of dE/dt = x ft^3/sec ...
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Hi, all. I'm in desperate need of assistance with a matrix I can't get my head around of. I want to solve a system of...
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Suppose T=T(r,θ)=G(x,y) How do you prove ∇T(r,θ)=∇G(x,y)? I can think of some arguments in favor of this equality,...
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If you rotate your rectangular coordinate system (x,y) so that the rotated x'-axis is parallel to a vector (a,b), in...
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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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Hey guys, Struggling with understanding this taylor vs. maclaurin series stuff. So a few questions. Let's say...
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I'm currently reading Tolstov's Fourier series and in page 58 he talks about a criterion for the completeness of a...
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