Coplanarité de trois vecteurs 1 ère Méthode :Soient \(\vec{u}(x ; y ; z), \vec{v}\left(x^{\prime} ; y^{\prime} ; z^{\prime}\right)\) et \(\vec{w}\left(x^{\prime \prime} ; y^{\prime \prime} ; z^{\prime \prime}\right)\) trois vecteurs de l'espace muni d'une base \((\vec{i} ; \vec{j} ; \vec{k})\). Le déterminant des vecteurs \(\vec{u}, \vec{v}\) et \(\vec{w}\) dans...

Ecrire les nombres selon la forme  a \( \sqrt{b} \)  où a et b deux entiers naturels , tel que  b est   le plus petit possible : (1) \(\sqrt{28}\)(2) \(\sqrt{20}\)(3) \(\sqrt{72}\)(4) \(\sqrt{27}\)(5) \(\sqrt{54}\)(6) \(\sqrt{108}\)

## Same as Ever ## SummarySame as Ever is a collection of 23 short stories highlighting timeless human flaws and patterns to help you make better financial and life decisions based on the things that never change instead of trying to predict the future.In late 2009, the economy was in shambles. The US housing crisis had escalated into “the Great Recession,” and even in a small town...

a est un réel positif, simplifier : \begin{aligned}&A=\sqrt{36 a^2} \\&B=\sqrt{144 a^2+25 a^2} \\&C=\sqrt{\frac{a^2}{16}}+\sqrt{\frac{a^2}{9}} \\&D=\sqrt{225 a^2}-\sqrt{121 a^2}\end{aligned}