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 Feb 13 awarded Popular Question Sep 28 awarded Popular Question Sep 2 awarded Yearling Sep 30 awarded Explainer Sep 24 awarded Autobiographer Sep 2 awarded Yearling Oct 30 revised Branch cut of $w=\left(\dfrac{z+1}{z-1}\right)^{1/3}$ Improved LaTeX Oct 30 comment Find global minimum "Completing the square" means summing and subtracting to your expression other monomials, in order to be able to identify something as the square of a polynomial. Since squares are non-negative, this should help you. As a trivial example of square completion, notice that $x^2 + 2x = x^2 + 2x + 1 - 1 = (x+1)^2 -1 \geq -1$. Oct 30 suggested approved edit on Branch cut of $w=\left(\dfrac{z+1}{z-1}\right)^{1/3}$ Sep 30 comment Could someone explain what I am missing in regard to this Wronskian? Hi, court, welcome on math.SE! I LaTeXed your equations and formulae. Please, have a look here and learn how to do it! :) Sep 30 awarded Informed Sep 30 revised Could someone explain what I am missing in regard to this Wronskian? LaTeXed formulae. Sep 30 suggested approved edit on Could someone explain what I am missing in regard to this Wronskian? Sep 4 revised How to calculate $\lim_{z\to0}\frac{\log(1+z)}{z}$ added 43 characters in body Sep 4 answered How to calculate $\lim_{z\to0}\frac{\log(1+z)}{z}$ Sep 2 awarded Yearling Aug 18 revised Find the value of $\textrm{cosec}^2\left(\frac\pi7\right) +\textrm{cosec}^2\left(\frac{2\pi}7\right)+\textrm{cosec}^2\left(\frac{4\pi}7\right)$ LaTeXed formulae. Aug 18 suggested approved edit on Find the value of $\textrm{cosec}^2\left(\frac\pi7\right) +\textrm{cosec}^2\left(\frac{2\pi}7\right)+\textrm{cosec}^2\left(\frac{4\pi}7\right)$ Jul 29 comment Searching sum of constants in a polynomial You have a typo in $f(-1)$: should be $-a+b-1=36$. Jul 29 revised Find a vector $\mathbf x$ whose image under $T$ is $b$. LaTeXed formulae.