Voyska
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 Feb 9 awarded Notable Question Jan 29 asked Define the operations for quadratic forms expressed on matrices? Jan 20 comment Where is the form $f(g(x))g'(x)$? "entire books published consisting mainly of page after page of worked-out integrals" - Do you mean tables of integrals or books that show how to compute each integral? (Like Edward's Integral Calculus)? Jan 20 comment Where is the form $f(g(x))g'(x)$? @AndréNicolas Yes, Nicolas. This is not imediatelly clear from the calculus textbooks. I'm trying to understand it a little better. Jan 20 asked Where is the form $f(g(x))g'(x)$? Jan 15 asked What is the cost of factoring polynomials in $\mathbb{R}[x]$? Jan 15 awarded Popular Question Jan 12 asked Book filled with proofs pre-Decartes and post-Decartes? Jan 12 accepted What's the importance of conics and quadrics in the context of a course of pure mathematics? Dec 6 asked Is it actually important to translate the conics? Nov 29 comment Is $-2 h \sin (\theta ) \cos (\theta )\neq -h\sin (2\theta)$? Oh, sorry. I usually assume I screwed everything up. Now I screwed up by assuming that I always screw thing up. That's a whole different plane of existence! Nov 29 asked Is $-2 h \sin (\theta ) \cos (\theta )\neq -h\sin (2\theta)$? Nov 26 asked What's the importance of conics and quadrics in the context of a course of pure mathematics? Nov 23 revised How did he went from $b_{12}$ to $\tan 2\varphi=\cfrac{2a_{12}}{a_{11}-a_{22}}$? deleted 2 characters in body Nov 22 comment Why does this matrix give the derivative of a function? @nbubis is a Jordan block and f a function matrix ? Nov 22 accepted How did he went from $b_{12}$ to $\tan 2\varphi=\cfrac{2a_{12}}{a_{11}-a_{22}}$? Nov 22 asked How did he went from $b_{12}$ to $\tan 2\varphi=\cfrac{2a_{12}}{a_{11}-a_{22}}$? Nov 21 comment How did mathematicians decide on the axioms of linear algebra How does your intuition says that $c\langle u,v \rangle=\langle cu,cv\rangle$? Take the vectors $\{(a,b), (c,d)\}$, then: $e (a,b) =(ea, eb)$ and $\langle (ea, eb), (c, d )\rangle = ea\cdot c +eb\cdot d = e (ac + bd)$. Nov 21 revised On a non-standard approach to the classification of conics? deleted 1 character in body Nov 21 asked On a non-standard approach to the classification of conics?