1.The maximum and minimum values of the function f:R→Rf : \mathbb{R} \to \mathbb{R}f:R→R defined by f(x)=5cosx+3cos(x+π3)+8f(x) = 5\cos x + 3\cos\left(x + \frac{\pi}{3}\right) + 8f(x)=5cosx+3cos(x+3π)+8 for all x∈Rx \in \mathbb{R}x∈R, are respectivelya.15,115, 115,1b.8,−88, -88,−8c.−7,−15-7, -15−7,−15d.1,−151, -151,−15Login to continueOnly logged in users canattempt or see the solution.
