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The maximum and minimum values of 6 sin x cos x + 4 cos 2x are

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The maximum and minimum values of 6 sin x cos x + 4 cos 2x are

(a)  5, –5

(b)  4, –4

(c)  √7, - √7

(d)  2 √13, - 2 √13

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1 Answer

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Best answer

Correct option  (a) 5, –5

Explanation:

We have 6 sin x cos x + 4 cos 2x = 3 sin 2x + 4 cos 2x. Now the maximum and minimum values of

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