differentiate y=cosx cos2x cos3x || find'(dy/dx)' of y=cosx cos2x cos3x

find'(dy/dx)' of y=cosx cos2x cos3x y =cos x.cos2x.cos3x Find dy/dx | NCERT | CalculusCheck | Class12 Differentiate cosx cos2x cos3x NCERT Mathematics solution JEE Advance solution mathematics JEE Mains solution mathematics #mathematics #ncert #JEE #JEE_MAINS #IITJEE #concepts&methods concepts & methods #conceptsandmethods concepts and methods