chwala's latest activity
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chwala replied to the thread I Determine whether ##125## is a unit in ##\mathbb{Z_471}##.Thks @Gavran ,I will check on your approach... -
chwala reacted to Gavran's post in the thread I Determine whether ##125## is a unit in ##\mathbb{Z_471}## with
Like.
The back-substitution in the context of the Euclidean algorithm is: 1=9-4⋅2, 2=29-3⋅9, 1=9-4⋅(29-3⋅9)=-4⋅29+13⋅9, 9=96-3⋅29... -
17 years in less than a month. Not very active lately. Getting older I suppose. But still one of the first things I do in the morning is...
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I thought you joined about when I did. But this is 22 for me. Course I haven't been active for 12 years; except to drop by once in...
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Hey all. Looks like my 15 year anniversary of joining PF happened yesterday (while my internet was down). Just wanted to say thanks to...
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chwala posted the thread I Determine whether ##125## is a unit in ##\mathbb{Z_471}## in Linear and Abstract Algebra.This is the question, I understand the concept, in ##\mathbb{Z_n}## an element is a is a unit if and only if gcd( a,n) =1. My...
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chwala reacted to Greg Bernhardt's post in the thread Insights What Exactly is Dirac’s Delta Function? - Insight with Like.
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum...
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chwala replied to the thread Solve this problem that involves induction.@Mark i re-uploaded, i too could not see the highlighted part :biggrin:
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chwala reacted to renormalize's post in the thread Eliminate ##\theta## between a pair of given equations with
Wow.
Actually, it's not all that hard to reduce one to the other. Start from the textbook... -
Express ## f(3) ## and ## f’(3) ## in terms of ## n ## by using $$ f(x)=\frac{x^{n+1}-x}{x-1} $$ and $$...
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Github: How to Write Unmaintainable Code
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chwala replied to the thread Solve the given differential equation.Thanks for the thoughtful input — actually, I’ve taken this as a personal challenge! I’ll be applying the Runge-Kutta method to this...
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chwala posted the thread Solve the given differential equation in Calculus and Beyond Homework Help.Ok, i just came up with this ode. How does one go about to solve it? My attempt Let ##M(x,y) =(2xy+\cos y+\dfrac{2y}{x}-\sin x)## and...
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chwala replied to the thread Solve the first order linear differential equation.The formal solution to me does not look complete, but i fully understand the view of mathematicians coming to that conclusion.
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chwala reacted to renormalize's post in the thread Solve the first order linear differential equation with Like.
You don't! The expression ##y\left(x\right)=e^{x}x^{-x}\left(6\int e^{-x}x^{x+1}dx+k\right)## (where ##k## is an arbitrary constant)...
