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comment I cannot find the relation between $(I-A)x=v$ and $((I-A)^2)x=0$.
Are you doing this in general, or are specific A and v given? If the latter, could you please add their values to your question?
May
22
comment Linear Algebra and Upper triangular matrix
Hi, welcome to Math.SE! Consider revising your question so we understand what it is you are asking for, or perhaps providing some examples.
May
21
comment Best methods for solving ODE with series
@Quality the idea is to end up with exactly the same powers of x in each sum, i.e. $\sum ... x^n$
May
21
comment Best methods for solving ODE with series
@Quality all sums should index from 0
May
20
awarded  Enlightened
May
20
answered Find the values of $a,b,c$ of the complex function $f(x)= (ax+b)/(x+c)$
May
20
revised Find the values of $a,b,c$ of the complex function $f(x)= (ax+b)/(x+c)$
LaTeX
May
20
answered Best methods for solving ODE with series
May
20
comment Way to compare three numbers with an algorithm.
@Frxstrem of course, another typo from multiple revisions, fixed now, thanks
May
20
revised Way to compare three numbers with an algorithm.
deleted 2 characters in body
May
20
awarded  Nice Answer
May
20
comment find the derivative of the integral
@CodyJohnson he likely meant to integrate dy, otherwise the problem makes no sense...
May
20
answered find the derivative of the integral
May
20
answered Can a graph with no cut edges contain a cut vertex
May
20
comment Can a graph with no cut edges contain a cut vertex
what are your thoughts on the problem? can you write down definitions of cut vertex and cut edge and think what happens in a graph without cut edges?
May
20
answered Determine a closed form for this sequence
May
20
comment Direct Proof on Divisibilty
@user3321427 direct argument would be like "this has a factor of 2, hence it must be even" -- another similar one to argue it is divisible by 4
May
20
reviewed Approve Watts-Strogatz graphs
May
20
answered Direct Proof on Divisibilty
May
20
comment help with showing a series is divergent
@AndréNicolas you mean $\ln n > 1$ for $n >e$?