Barun Dasgupta
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 Aug 7 comment If all the 4 sides of a quadrilateral are equal but only 3 of its angles are equal. Is it a square? The opposite angles of a rhombus are equal. So when three are equal to each other then all four are equal to each other. Jun 27 revised Diophantine Equation $x^n + y^n =z^n (x2)$ deleted 1 character in body Jun 21 revised Diophantine Equation $x^n + y^n =z^n (x2)$ fixed grammer Jun 10 comment Diophantine Equation $x^n + y^n =z^n (x2)$ Thanks for your help. I will try out your method too. Jun 10 revised Diophantine Equation $x^n + y^n =z^n (x2)$ Add my solution Jun 10 comment Diophantine Equation $x^n + y^n =z^n (x2)$ @Barto : A little more elaboration will be helpful Jun 9 revised Diophantine Equation $x^n + y^n =z^n (x2)$ edited title Jun 9 comment Diophantine Equation $x^n + y^n =z^n (x2)$ @Barry - can we say that the proof of FLT is simple college level algebra ? Jun 8 asked Diophantine Equation $x^n + y^n =z^n (x2)$ Jun 5 awarded Informed Jun 5 comment Find line orthogonal to plane that goes through a point A simple way to find a vector perpendicular to a plane is provided here math.stackexchange.com/questions/352134/… May 17 comment Partial derivatives of $\ln(x^2+y^2)$ That is right @beginner May 16 answered How would this differential equation be solved? May 16 accepted Fermat's Last Theorem - A query May 16 revised Fourier and half range series for $\sin x$ rolled back to a previous revision May 16 revised Fourier and half range series for $\sin x$ rolled back to a previous revision May 16 revised Fourier and half range series for $\sin x$ rolled back to a previous revision May 16 revised Fourier and half range series for $\sin x$ rolled back to a previous revision May 16 revised Fourier and half range series for $\sin x$ rolled back to a previous revision May 16 awarded Cleanup