Nico Bellic
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 May 24 comment How can I resolve a matrix of 13 rows and 40 columns? Try online matrix calculators. There most certainly should be some. May 21 comment Derivative of a weird Integral and Derivative of a Function Hi Teckizt. You have to notice a pattern for the derivative part. First derivative is $1/(x-1)^2$. The third is $((3-2x)x^2)/(x-1)^2$. The four is $((4-3x)x^3)/(x-1)^2$. Notice the pattern? May 19 comment How to prove inequality So is $d=3$? or $a,b,c,d$ are any elements of $\mathbb{N}$? May 17 comment Find all positive integers $L$, $M$, $N$ such that $L^2 + M^2 = \sqrt{ N^2 +21}$ Dammit Marvis, you beat me to it haha. May 13 comment Eigenvalues of a matrix $A$ such that $A^2=0$. @froggie Yes you are correct. The only is unnecessary there. May 13 comment Eigenvalues of a matrix $A$ such that $A^2=0$. @froggie I think it is. mathresource.iitb.ac.in/linear%20algebra/proof10.3.2.html May 13 comment Eigenvalues of a matrix $A$ such that $A^2=0$. @preeti It will be diagonalizable with entries from $R$ only if the $nxn$ matrix is symmetric with $n$ distinct eigenvalues. May 11 comment A First Course in Linear Algebra Text Hi Nunoxic. I added Strang. I think that one complements well with engineering applications. EDIT: I also see that you chose it too! May 7 comment Series Solution Near Ordinary Points for Second Order Differential Equations Haha, nice few people recognize the reference. May 7 comment Series Solution Near Ordinary Points for Second Order Differential Equations Thanks Jon. The only reason why I got stuck was because the simplification threw me off. It was late and I didn't even think to simplify (in fact I thought it was already simplified). Anyway, thanks again. May 6 comment Prove that you can form at most $n$ same sized intersections of $m$ subsets of an $n$ element set. Ah I see. Thank you. Also, can you define semi-definite and definite. May 6 comment Prove that you can form at most $n$ same sized intersections of $m$ subsets of an $n$ element set. Hi Austin. I'm a little confused on your terminology. Could you please elaborate from "Letting M...". May 6 comment Prove that you can form at most $n$ same sized intersections of $m$ subsets of an $n$ element set. Thanks! Just one question, what does the âˆªiCi at the end mean? I'm not sure I understand that notation. May 5 comment A game: Fibonacci sequences and probability. That's one way to say it. Apr 22 comment Using linear algebra, how is the Binet formula (for finding the nth Fibonacci number) derived? I'm truly, really sorry, but I'm not sure if I'm able to follow you. Apr 22 comment Using linear algebra, how is the Binet formula (for finding the nth Fibonacci number) derived? I haven't done eigenvectors yet (I do that in about a week in my L.A. course). Is there a way to derive all that without using those concepts? Apr 15 comment The rank of a linear transformation/matrix Oh duh. Oh my I feel very dumb now. Apr 15 comment The rank of a linear transformation/matrix Ah I see. Is there a proof to that? Apr 15 comment The rank of a linear transformation/matrix Again, thanks so much. For some reason the mn thing was throwing me off a great deal (I had read it somewhere online and for the life of me couldn't find what it meant). But apparently it has nothing to do with the rank-nullity theorem, so I believe it's all good now. Apr 15 comment The rank of a linear transformation/matrix Ok, it makes sense. Thanks!