chwala's latest activity
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chwala reacted to anuttarasammyak's post in the thread Problem involving ordinary differential equation with
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$$\ln 10 e^{y\ln 10 }dy = \frac{dx}{x}$$ $$e^{y\ln 10 } = \ln |x |+ C$$ $$y= \frac{\ln(\ln |x| + C)}{\ln 10}$$defined for $$|x|... -
chwala posted the thread Problem involving ordinary differential equation in Calculus and Beyond Homework Help.##10^y dy = \dfrac{dx}{x\ln 10}## ##\int 10^y dy = \int \dfrac{dx}{x\ln 10}## ... ##10^y = \ln x +C## ##10^y = \ln (ax)##... -
chwala reacted to neilparker62's post in the thread Solve the quadratic equation involving sum and product with
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The roots of the equation in part (i) are the same as the roots in part (ii). Since in both cases we have equations of the form ax^2 +... -
chwala reacted to Greg Bernhardt's post in the thread Insights AI Enriched Problem Solving with
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https://www.physicsforums.com/insights/ai-enriched-problem-solving/ Author: @neilparker62 -
chwala reacted to Gavran's post in the thread Solve the quadratic equation involving sum and product with
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This can also be shown in the following way. ## \begin{align} &\arctan\frac\alpha c+\arctan\alpha=\arctan c\nonumber\\... -
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}##.With complex numbers, it makes it even easier,... -
chwala reacted to MatinSAR'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
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According to you ##\dfrac{tan\beta} {4}=tan\dfrac{\beta} {4} ## but it's not correct. Fore example : ##\dfrac{1} {4} tan \pi =0## But... -
chwala reacted to neilparker62'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
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"All in one" derivation of compound angle formulae - based on the video construction. -
chwala replied to the thread Solve the quadratic equation involving sum and product.done. -
chwala replied to the thread Solve the quadratic equation involving sum and product.for part i. i guess the quadratic equation was not indicated. I will go ahead and finish on that; The quadratic equation will be ##x^2... -
chwala reacted to Mark44's post in the thread Find the smallest value of angle ##α + β ## with
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The given equations are ##\tan(\alpha) = \frac a {a + 1}## and ##\tan(\beta) = \frac 1 {2a + 1}##. These lead to the equation... -
chwala reacted to Mark44's post in the thread Find the smallest value of angle ##α + β ## with
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The wording of the problem isn't clear, IMO. The smallest positive value for ##\alpha + \beta## is ##\frac \pi 4##. There are smaller... -
chwala reacted to DrClaude's post in the thread How to apply BODMAS correctly in the given problem with
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I'm getting tired of being these in my social media. This is mathematically ambiguous and there is no right answer.