Question

y = cos2x * cos3x* cos5x solve by differentiation ​

Answer 1

Answer:

first use product rule by taking co2x cos3x as 1st and cos 5x 2nd

dy/dx= 2x3x(-sin2x)(-sin3x)(cos5x)+5x(-sin5x)cos2xcos3x

         

Answer 2

Answer:

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