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  1. Explanation of formula T = 2pi sqrt (m/k) • Physics Forums

    Feb 26, 2016 · Homework Statement This formula we've been using recently, I don't understand where it comes from. Homework Equations T = 2pi * sqrt (m/k) The Attempt at...

  2. Technique for simplifying, e.g. $\sqrt { 8 - 4\sqrt {3}}$ to $\sqrt {6 ...

    May 24, 2020 · How to find the square root of an irrational expression, to simplify that root. e.g.: $$ \sqrt { 8 - 4\sqrt {3} } = \sqrt {6} - \sqrt {2} $$ Easy to verify: \begin ...

  3. algebra precalculus - Simplification of $\sqrt {14} - \sqrt {16 - 4 ...

    Aug 18, 2015 · The nested radical $\sqrt {16 - 4 \sqrt {7}}$ is equal to $\sqrt {14}-\sqrt {2}$. Simply square both sides to prove that. Using $ (a-b)^2=a^2+b^2-2ab$, we get$$ (\sqrt {14}-\sqrt …

  4. In proof of SQRT (2) is irrational, why can't a,b both be even

    Sep 14, 2014 · In the classic proof of irrationality of SQRT (2) we assume that it can be represented by a rational number,a/b where a, b are integers. This assumption...

  5. How can I format mathematics here? - Help Center

    Many posts at Mathematics Stack Exchange include mathematical notation, written using $\mathrm\LaTeX$ commands surrounded by dollar signs. If you see dollar signs with what appears …