y(x)=sin(x/2)
y'(x)=(sin(x/2)'*(x/2)'
y'(x)=cos(x/2)*(1/2)=cos(x/2) / 2
y'(π/3)=cos(π/6) / 2=√3/2 : 2=√3 / 4.
y(x)=sin(x/2)
y'(x)=(sin(x/2)'*(x/2)'
y'(x)=cos(x/2)*(1/2)=cos(x/2) / 2
y'(π/3)=cos(π/6) / 2=√3/2 : 2=√3 / 4.