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 Mar 16 awarded Yearling Jan 11 answered Seperation of variables algortithm. Jan 11 reviewed Approve Use formula to prove consecutive integers Dec 30 awarded Nice Answer Aug 25 comment Is there another function with a property like the log? mathoverflow.net/questions/22706/… Aug 12 awarded Custodian Aug 12 reviewed Approve Are there any books on real analysis that explain what goes on in their proofs for a self studying student? May 25 comment Complex plane (Show that triangle is right-angled) Plotted in LaTeX using the Tikz package. May 25 answered Complex plane (Show that triangle is right-angled) Mar 16 awarded Yearling Dec 9 awarded Caucus Nov 4 comment Monotonicity of the function in some near interval of a local maximum critical point @iMath If that is your definition then a constant function, e.g. $f(x) = 5$ has a local maximum at every point (since there are no nearby values greater than $5$) but it's not increasing or decreasing (depending on your definition of increasing and decreasing). Nov 3 answered Monotonicity of the function in some near interval of a local maximum critical point Sep 30 awarded Explainer Sep 26 revised differentiating a function of a function $w=\sqrt{u^2+v^2}$ This is not a question about differential equations - retagged. Sep 26 suggested approved edit on differentiating a function of a function $w=\sqrt{u^2+v^2}$ Sep 5 awarded Nice Answer Aug 4 comment Why is $f(x)=\sin (2x-\pi)$ the same as $g(x)=-\sin(2x)$? @user50224 Look at my comment on your original posting. Aug 4 comment Why is $f(x)=\sin (2x-\pi)$ the same as $g(x)=-\sin(2x)$? Step E: If you move $\sin(2x)$ by $\pi$ you get $\sin(2(x - \pi)) = \sin(2x - 2\pi) = \sin(2x)$. What you have actually done is moved it right by $\pi/2$ which is only half a period, hence the negative. Jun 13 comment how do we interpret this integral from polar co-ordinates @DavidH For what it's worth, I'm pretty sure he wants your interpretation of the integral.