P0= 1-43 1-41-5 10 430 P()= 1-21-3 P()= 810 10 6366 6 Hu=421ag+211og10+211g150+311og30+11og(12-345 2-14 31 P() 22/P0=)25 p0=3+1→2p0y=2+7→ (2)方法1:Y=p0)0+y0y1)=1048+026-031 7 方法2: 6-712 =0311 8 2 2-15 P(n尸 e1-8 pCbl=p(b2)=2 p(al/b1)=PCaD)'p(bl-a2= 2 1- (a1: b 1)= Logl L =Lod21-2 2 p(1b2=ya)(2a)= 11: b2)= Log/ p(al-b2 R(ar =logle 2-16 (1)HX=-(03Lg(03+07Log07)=0881P(i)= P(ij)= H(IJ)= 2-14 (1) P(ij)= P(i/j)= (2) 方法 1: = 方法 2: 2-15 P(j/i)= 2-16 (1)