у=x^2/6=1/6/x^2
y'=(1/6)*2x=x/3
y=-2x^-10
y'=20x^-11
y=sin(x/3)
y'=cos(x/3)*(x/3)'=1/3*cos(x/3)
y=√х-16x^2
y'=1/2√x-16x^2 * (x-16x^2)'=1-32x/2√x-16x^2
