1.

(A) 3cosec x +5cosec x cot x(B) 3cot2x+5cosec2x(C) -3cosec x- 5cosec x cot xThe derivative of 3cotx +5 cosec x w.r.t. x is:(A) 3cosec2x + 5cosec x cotx(B) 3cot x+5cosec x(C) -3cosec2 x-5cosec x cot x(D) of these

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answer will be C....y=3cotx+5cosecx...



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