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 Mar 16 awarded Popular Question Nov 19 awarded Famous Question Nov 29 awarded Yearling Sep 24 awarded Autobiographer Jul 2 awarded Curious Oct 30 awarded Notable Question Mar 10 awarded Popular Question 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 20 revised Change of Basis Calculation Improved formatting May 20 suggested approved edit on Change of Basis Calculation May 19 comment How to prove inequality So is $d=3$? or $a,b,c,d$ are any elements of $\mathbb{N}$? May 18 revised Question about non-homogeneous and homogeneous linear D.E. deleted 69 characters in body 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 13 awarded Critic May 12 answered Irregular singular point of a DE May 11 revised A First Course in Linear Algebra Text added 807 characters in body