Differenciate it
answer is
cos4x + cos2x
no spams please
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Answer:
-2(2sin4x+sin2x)
Step-by-step explanation:
let Y = cos 2x + cos 4x
differentiate with respect to x
dy/dx=dcos4x/dx +dcos2x/dx
=-4sin4x-2sin2x
=-2(2sin4x + sin2x)
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