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 18h revised evaluate $\frac 1{1+\sqrt2+\sqrt3} + \frac 1{1-\sqrt2+\sqrt3} + \frac 1{1+\sqrt2-\sqrt3} + \frac 1{1-\sqrt2-\sqrt3}$ deleted 17 characters in body 18h revised evaluate $\frac 1{1+\sqrt2+\sqrt3} + \frac 1{1-\sqrt2+\sqrt3} + \frac 1{1+\sqrt2-\sqrt3} + \frac 1{1-\sqrt2-\sqrt3}$ deleted 41 characters in body Jul23 revised Logarithmic Integral II deleted 251 characters in body Jul23 revised How to solve $z^3 + \overline z = 0$ added 466 characters in body Jul23 revised Simple Logarithms Equation added 30 characters in body Jul13 revised How to remember trig identities? added 108 characters in body Jul8 revised How to remember trig identities? added 1 character in body Jul8 revised How to remember trig identities? added 439 characters in body Jul6 revised Plot of $n$ concentric circles at once? edited title Jun24 revised Derivative of the Riemann zeta function for $Re(s)>0$. added 10 characters in body Jun17 revised On norms for “more complicated objects” deleted 75 characters in body Jun11 revised Can every definite integral be expressed as a combination of elementary functions? added 2 characters in body Jun10 revised Express 99 2/3% as a fraction? No calculator added 693 characters in body Jun8 revised The value of $\int^{\pi/2}_0 \frac{\log(1+x\sin^2\theta)}{\sin^2\theta}d\theta$ deleted 13 characters in body May27 revised How should I self-study calculus? added 186 characters in body May19 revised Curious formula for minimum? added 81 characters in body May18 revised A name for the property $\| x \star y \| = \| x \| \| y \|$. added 16 characters in body May18 revised Curious formula for minimum? added 144 characters in body May13 revised Is there a good book on Circulant Matrices? edited body May4 revised Computing the complex integral? deleted 1 character in body