Find the maximum value of the function `f(x) =sin x + cos x`.

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Find the minimum and maximum values for f(x) = sin x + | cos x| over [0, 2pi].

Find the minimum and maximum values for f(x) = (sin x + cos x)/(sin x + cos x -2).

Find minimum and maximum values for f(x) = sinx(1+ cos x) over interval [0, pi].

Maximum value of `f(x)=sinx+cosx ` is `:`

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Maximum value of f(x)=sin x+cos x is (a) 1 (b) 2 (c) 1/√(2) (d) √(2)

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Find the minimum and maximum values for f(x) = sin x + sqrt(3) cos x +x over interval [0, pi].