m(x)=m(Y)=0
D(x)=(x1-m(x))^2*p1+(x2-m(x))^2*p2=x1^2*p1+x2^2*p1=2x1^2*p1=2*1*1/2=1
аналогично
D(y)=2*100^2*1/2=100^2
m(x)=m(Y)=0
D(x)=(x1-m(x))^2*p1+(x2-m(x))^2*p2=x1^2*p1+x2^2*p1=2x1^2*p1=2*1*1/2=1
аналогично
D(y)=2*100^2*1/2=100^2