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Comment montrer que pour tout x R, on a g(x) = 2(2x + (2pi)/(3)) sachant que g(x) = (2x + (2pi)/(3)) + (2x + (pi)/(6))?

Mathematics

ScanSolve AI Answer

Voici la suite des solutions pour les exercices.

Exercice 1 (suite):

  1. Montrer que pour tout x∈Rx \in \mathbb{R}, on a g(x)=2sin⁡(2x+2π3)g(x) = 2\sin\left(2x + \frac{2\pi}{3}\right). Nous avons g(x)=sin⁡(2x+2π3)+cos⁡(2x+π6)g(x) = \sin\left(2x + \frac{2\pi}{3}\right) + \cos\left(2x + \frac{\pi}{6}\right). Utilisons l'identité cos⁡(θ)=sin⁡(θ+π2)\cos(\theta) = \sin\left(\theta + \frac{\pi}{2}\right). Appliquons cette identité au terme $\cos\left(2x + \frac{\pi}{6}\right
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