Chris Taylor
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 Jan 27 awarded Generalist Jan 5 comment What is the geometric interpretation of the transpose? @mcb You need to read the rest of the sentence - "can be regarded as a rotation to a new basis, then scaling in this new basis, and finally rotating back to the new basis". The effect of the two rotations cancels out, and the net effect is just a scaling (the magnitudes of the scaling are described by the eigenvalues of the symmetric matrix). Dec 17 awarded Yearling Dec 15 revised Simulation of 2-dimensional Brownian motion added 1 character in body Dec 1 comment Amount become $9$ times in $12$ years at Compound interest. In what time it will become $27$ times Try taking the square root of both sides. Nov 30 revised Particular case of a differential equation added 3 characters in body Nov 11 awarded Good Answer Oct 21 awarded Nice Answer Oct 12 comment negative number divided by positive number, what would be remainder? @neolivz4ever But only two where the absolute value of the remainder is less than the divisor - sure, you can write 13 = 1 x 5 + 8 but no one thinks that is a justification for saying that 8 is the remainder after dividing 13 by 5. Look, you have one convention, and almost everyone in the world has a different convention. You can either admit that there are multiple valid conventions, or you can continue to pointlessly insist that you are right and the rest of the world is wrong. There is no interesting discussion to be had in either case. Oct 10 comment negative number divided by positive number, what would be remainder? @neolivz4ever As I and many others said, there are multiple conventions on how the quotient is rounded. You are free to use your own convention, but that won't stop other people using a different one! Jul 10 comment Functions that are their own inversion. @user121330 Phrases like "it's easy" and "it's trivial" are common mathematical parlance. Like a lot of mathematical language, they have a slightly different meaning to their common English meaning. In particular, when someone describes something as "easy" or "trivial" they often mean that it can be done without introducing significant new ideas, or without requiring a sudden flash of insight. In particular, a calculation or derivation taking many pages of routine algebraic manipulation can be described as "trivial" even though most non-math people would say it is hard. Jun 19 awarded Notable Question Jun 14 awarded Good Answer May 31 awarded Nice Answer May 16 awarded Popular Question Apr 28 awarded Popular Question Apr 3 awarded statistics Mar 28 awarded Nice Question Mar 1 awarded Good Answer Feb 14 revised Approximating the logarithm of the binomial coefficient added 214 characters in body