2x^3-1/3y^2; x=1/2 ; y=-3
2*1/8-1/3*9
1/4-3=-11/4
ответ: -11/4
2x^3-1/3y^2=2*(1/2)^3-1/3*(-3)^2=2*0.5^3-(-3)^2/3=0.25-(-3)^2/3=0.25-9/3=0.25-3=-2.75
2x^3-1/3y^2; x=1/2 ; y=-3
2*1/8-1/3*9
1/4-3=-11/4
ответ: -11/4
2x^3-1/3y^2=2*(1/2)^3-1/3*(-3)^2=2*0.5^3-(-3)^2/3=0.25-(-3)^2/3=0.25-9/3=0.25-3=-2.75