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The value of the function $sgn (\cos x - \sin x) in x \in (\frac{π}{4}, \frac{π}{2}) =$
( sgn is Signum function)

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Correct option is D

In π4,π2, cosx

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The value of the function sgn(cosx-sinx)inx∈π4,π2=( sgn is Signum function)

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Ready to Test Your Skills?

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The value of the function $sgn (\cos x - \sin x) in x \in (\frac{π}{4}, \frac{π}{2}) =$
( sgn is Signum function)