Dhivya Dharshini Asked a Question
November 8, 2020 10:26 ampts 30 pts
Ma 27. The difference between the greatest and least values of the function f(x) = cos x +cos 2x- cos 3x is (B) 2 (A) 3 3 (D) 8 9 (C) 4
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  • Mahendra devanda thankyou
    Option C is correct . See the attachment
    • cropped3758229146539330740.jpg
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    Dhivya Dharshini
    can you explain step by step