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Find the point of local maxima and local...

Find the point of local maxima and local minima of the function `f(x) = sin x - cos x, 0 lt x lt 2pi`.
Also, find the local maximum and local minimum values.

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The correct Answer is:
`- sqrt(2)`
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ARIHANT PUBLICATION-APPLICATION OF DERIVATIVES -QUESTION FOR PRACTICE PART - IV (SHORT ANSWER TYPE QUESTIONS )
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