Ответ:

[tex]y = \sin(x + \frac{\pi}{3} ) \\ y = \frac{d}{dx} ( \sin(x + \frac{\pi}{3} ) ) \\ y = \frac{d}{dg} ( \sin(g)) \times \frac{d}{dx} (x + \frac{\pi}{3} ) \\ y = cos(g) \times 1 \\ y = \cos(x + \frac{\pi}{3} ) \times 1 \\ y = \frac{ \cos(x) - \sqrt{3} \sin(x) }{2} [/tex]