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X1 X2
(Xl,X2) (Xl,X2,X3,X4)
X1 X2 (X1,X2) (X1,X2,X3,X4)
x1:x2:x3=:1:2 x1:x2:x3=2:1: x1:x2:x3=1:2: x1:x2:x3=:2:1
X1 X2 (X1,X2) (X1,X2,X3,X4)
X1%=11,X2%=7,X3%=0.5 X1%=7,X2%=-0.5,X3%=11 X1%=-0.5,X2%=11,X3%=7 X1%=11,X2%=-0.5,X3%=7
X1 X2 (X1,X2) (X1,X2,X3,X4)
x2·x3=x6 (x2)3=x8 x2+x3=x5 x6÷x3=x3
Ix1<Iy1,Ix1=Ix2 Ix1=Ix2,Ix2<Ix3 Ix2<Ix3,Iy1=Iy2 Ix2=Ix3,Ix2<Iy3
Ix1<Iy1,Ix1<Ix2 Ix1=Ix2,Ix2<Ix3 Ix2<Ix3,Iy1=Iy2 Ix2=Ix3,Iy2<Iy3
X1 X2 (Xl,X2) (Xl,X2,X3,X4)