1.If f(x)={−4sinx+cosx,x≤−π2asinx+b,−π2<x<π2cosx+2,x≥π2f(x) = \begin{cases} -4\sin x + \cos x, & x \leq -\dfrac{\pi}{2} \\[8pt] a\sin x + b, & -\dfrac{\pi}{2} < x < \dfrac{\pi}{2} \\[8pt] \cos x + 2, & x \geq \dfrac{\pi}{2} \end{cases}f(x)=⎩⎨⎧−4sinx+cosx,asinx+b,cosx+2,x≤−2π−2π<x<2πx≥2π is continuous, then:a.a=−1, b=3a = -1,\, b = 3a=−1,b=3b.a=1, b=−3a = 1,\, b = -3a=1,b=−3c.a=1, b=3a = 1,\, b = 3a=1,b=3d.a=−1, b=−3a = -1,\, b = -3a=−1,b=−3Login to continueOnly logged in users canattempt or see the solution.
