Найдите производные:a)у=tq2x-Ctq2x;б)у=еsinx※cosx
Sin2x/cos2x-cos2x/sin2x=[sin^2(x)-cos^2(x)]/sin2x*cos2x= -[cos4x/(1/2*2*sin2x*cos2x)]=-(cos4x/sin4x)=-ctg4x