chwala's latest activity
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chwala reacted to MidgetDwarf's post in the thread Undergrad Uniform convergence and pointwise convergence with
Informative.
Do you have access to a library? If so, I would read the chapter in Abbot Understanding Analysys (5 I think). It had the best... -
chwala reacted to luxferre's post in the thread Undergrad Uniform convergence and pointwise convergence with
Like.
The difference is subtle and down to the difference in quantifers. In pointwise convergence, we fix X, but in uniform convergence, it... -
chwala reacted to Dale's post in the thread High School Einstein equations don't work at large scale? with Informative.
I don’t think there is an answer that is both simple and complete. Newton’s laws have been experimentally shown to be correct in the...
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chwala replied to the thread High School Einstein equations don't work at large scale?.Am Totally lost here! Am in the dark! In simple straightforward terms, are you guys saying Newton's laws are wrong? Also theory on...
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* When I came across this new look last night, my second reaction was, "Here we go again!" My first reaction can't be posted on a...
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How do we get back to the old style?
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Something about the new style makes it much less readable. I don't know if it's the font? Do we have any control over these things? So...
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Same here - the font seems a lot harder to read.
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PF style 2026 has been released. It's a warmer, more modern and academic theme. Please thread in your feedback and suggestions. I'll be...
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chwala reacted to anuttarasammyak's post in the thread Prove that ## 4\tan^{-1}\left[\dfrac{1}{5}\right]- \tan^{-1}\left[\dfrac{1}{239}\right]= \dfrac{π}{4}## with Like.
Arg function depends on direction not magnitude of complex number as you got the same result with him. He made use of it for easy...
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chwala replied to the thread Prove that ## 4\tan^{-1}\left[\dfrac{1}{5}\right]- \tan^{-1}\left[\dfrac{1}{239}\right]= \dfrac{π}{4}##.@Gavran ...you left out ##50## i.e in the denominator... can you see that? ought to be ...$$=\arg(0.5+0.5i)=\dfrac{π}{4}$$ Cheers.
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chwala reacted to Gavran's post in the thread Problem involving ordinary differential equation with Like.
The substitution ## y_1=10^y ## simplifies the equation $$ 10^ydy=\frac{dx}{x\ln10} $$ to the equation ## dy_1=dx/x ##. The general case...