Найти точки экстремума функции: y= x- cos2x , если x принадлежит [-p/2; p]
Y`=1+2sin2x=0 sin2x=-1/2 2x=-π/6 x=-π/12∈[-π/2;π] _ + -π/2 -π/12 0 min y(-π/12)=-π/12-cos(-π/6)=-π/12-√3/2 (-π/12;-π/12-√3/2)