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Find the values of a for which the function f(x) = cos x - sin x + ax + b is decreasing Find the values of a for which the function f(x) = cos x - sin x + ax + b is decreasing
f'(x)=-sinx-cosx+a <0the minmum value of -sinx-cosx, occurs at pi/4 = -sqrt(2)=-1.41a-1.41<0a<1.41Sher MohammadB.Tech, IIT Delhi
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