√2*cos(2x+п/4)+1=0cos(2x+п/4)=-1/√22x+п/4=+-arrcos(-√2/2)+2пk2x+п/4=+-3п/4+2пk2x=п/2+2пk 2x=-п+2пkx=п/4+пk x=-п/2+пk
√2*cos(2x+п/4)+1=0cos(2x+п/4)=-1/√22x+п/4=+-arrcos(-√2/2)+2пk2x+п/4=+-3п/4+2пk2x=п/2+2пk 2x=-п+2пkx=п/4+пk x=-п/2+пk