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1d
comment linear homogeneous constant coefficient systems
Please show your work on the problem and we will be glad to give some hints
1d
comment Finding angle x
Hi, welcome to Math.SE, please show us what you think about the problem and we will be glad to help
2d
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
comment Way to compare three numbers with an algorithm.
@Frxstrem of course, another typo from multiple revisions, fixed now, thanks
May
20
comment find the derivative of the integral
@CodyJohnson he likely meant to integrate dy, otherwise the problem makes no sense...
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
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
comment help with showing a series is divergent
@AndréNicolas you mean $\ln n > 1$ for $n >e$?
May
20
comment Generating function - the number of ways to distribute 100 dollars to n people.
@BrianTung of course, fixed
May
20
comment Way to compare three numbers with an algorithm.
@BlueRaja-DannyPflughoeft thank you, added an update to the answer reflecting your points
May
20
comment Linear or Non-Linear Model
yes, $\beta \cdot \gamma$ is not a linear relationship
May
20
comment Linear or Non-Linear Model
@dsforecast i don't understand why you need them separately - whoever modeled these separately likely wrote down conditions allowing you to determine these once $\delta$ has been found from the linear regression. Generally, you take $\beta \equiv 1$ to avoid the problem, but you have a specific problem here and it's details must be used.
May
20
comment Rate Times Distance Problem with Averages
What are your thoughts on the problem?
May
20
comment Geometry/ trig.
@MichaelAvisov any calculator will do this for you, or you can use Wolfram Alpha: wolframalpha.com/input/?i=arcsin(10.817%2F21)
May
20
comment Poisson counting process question, but correct answer not obtained by usual method
@DOGOFWALLSTREET because knowing what happened over a large interval influences information you know about its subintervals.
May
20
comment Poisson counting process question, but correct answer not obtained by usual method
$P(A|B) \neq P(B|A)$, even here
May
20
comment Way to compare three numbers with an algorithm.
+1. I like accounting for relative distances, which my answer does not do. Unfortunately, won't generalize too well. Perhaps you need to divide this by the average instead of the median... Another question to think about is 0, 10, 10.001 are not close (OP's second example) but your metric would be fairly small...