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Jul
23
comment Your favourite maths puzzles
One answer (from Proof Without Words book): gurmeetsingh.files.wordpress.com/2008/10/calissons.png
Jul
22
comment Can there be two distinct, continuous functions that are equal at all rationals?
Indeed I did. Thanks for catching that!
Jul
22
comment Intuitive understanding of the derivatives of $\sin x$ and $\cos x$
@Justin L.: Whoops, I definitely misread your question and thought that it was answering itself somehow. Sorry!
Jul
22
comment What property of certain regular polygons allows them to be faces of the Platonic Solids?
The definition of "Platonic solid" requires that the faces are identical regular polygons, but apparently you're looking for some other more general definition that allows irregular polygonal faces. Why is it that you're not counting the triangular bipyramid which doesn't have regular faces? Here's a picture: upload.wikimedia.org/wikipedia/en/thumb/f/f7/…
Jul
21
comment Intuitive understanding of the derivatives of $\sin x$ and $\cos x$
I feel like maybe this should be a question asking if anyone knows of an intuitive explanation and you should write the second part of your answer as an answer. (See meta.stackexchange.com/questions/17463).
Jul
21
comment Best Intermediate/Advanced Computer Science book
I think this would be more appropriate at Stack Overflow, no?