表达式7: "U" left parenthesis, "x" , "t" , right parenthesis equals StartFraction, 1 Over "N" , EndFraction total left parenthesis, "c" Subscript, 1 , Baseline "P" left parenthesis, "n" Subscript, 1 , Baseline , "x" , "t" , right parenthesis , right parenthesisUx,t=1Ntotalc1Pn1,x,t
7
表达式8: "n" Subscript, 1 , Baseline equals left bracket, 1 , 2 , ... , "N" Subscript, "m" , Baseline , right bracketn1=1,2,...,Nm
equals=
11
22
8
表达式9: "N" Subscript, "m" , Baseline equals length left parenthesis, "c" Subscript, 1 , Baseline , right parenthesisNm=lengthc1
equals=
22
9
表达式10: "N" equals total left parenthesis, "c" Subscript, 1 , Baseline , right parenthesisN=totalc1
equals=
11
10
隐藏 标签 left parenthesis, left bracket, 0 , "L" , right bracket , 0 , right parenthesis0,L,0
