AP EAPCET 23-Aug-2021 Shift 1 Paper
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Question : 68 of 160
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If f ( x ) = sin x . sin 2 x . sin 3 x and f " ( x ) = a ( sin b x ) + c ( sin d x ) + e ( sin k x ) , then thevalue of ( a + c + e ) − ( b + d + k ) equals ______
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