表达式30: left parenthesis, "i" plus 0 "R" plus "a" , "R" plus 0 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 0 , right brace , right parenthesisi+0R+a,R+0Step+bk<n−0
30
表达式31: left parenthesis, "i" plus 1 "R" plus "a" , "R" plus 1 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 1 , right brace , right parenthesisi+1R+a,R+1Step+bk<n−1
31
表达式32: left parenthesis, "i" plus 2 "R" plus "a" , "R" plus 2 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 2 , right brace , right parenthesisi+2R+a,R+2Step+bk<n−2
32
表达式33: left parenthesis, "i" plus 3 "R" plus "a" , "R" plus 3 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 3 , right brace , right parenthesisi+3R+a,R+3Step+bk<n−3
33
表达式34: left parenthesis, "i" plus 4 "R" plus "a" , "R" plus 4 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 4 , right brace , right parenthesisi+4R+a,R+4Step+bk<n−4
34
表达式35: left parenthesis, "i" plus 5 "R" plus "a" , "R" plus 5 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 5 , right brace , right parenthesisi+5R+a,R+5Step+bk<n−5
35
表达式36: left parenthesis, "i" plus 6 "R" plus "a" , "R" plus 6 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 6 , right brace , right parenthesisi+6R+a,R+6Step+bk<n−6
36
表达式37: left parenthesis, "i" plus 7 "R" plus "a" , "R" plus 7 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 7 , right brace , right parenthesisi+7R+a,R+7Step+bk<n−7
37
表达式38: left parenthesis, "i" plus 8 "R" plus "a" , "R" plus 8 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 8 , right brace , right parenthesisi+8R+a,R+8Step+bk<n−8
38
表达式39: left parenthesis, "i" plus 9 "R" plus "a" , "R" plus 9 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 9 , right brace , right parenthesisi+9R+a,R+9Step+bk<n−9
39
表达式40: left parenthesis, "i" plus 10 "R" plus "a" , "R" plus 10 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 10 , right brace , right parenthesisi+10R+a,R+10Step+bk<n−10
40
表达式41: left parenthesis, "i" plus 11 "R" plus "a" , "R" plus 11 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 11 , right brace , right parenthesisi+11R+a,R+11Step+bk<n−11
41
表达式42: left parenthesis, "i" plus 12 "R" plus "a" , "R" plus 12 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 12 , right brace , right parenthesisi+12R+a,R+12Step+bk<n−12
42
表达式43: left parenthesis, "i" plus 13 "R" plus "a" , "R" plus 13 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 13 , right brace , right parenthesisi+13R+a,R+13Step+bk<n−13
43
表达式44: left parenthesis, "i" plus 14 "R" plus "a" , "R" plus 14 "S" Subscript, "t" "e" "p" , Baseline plus "b" left brace, "k" less than "n" minus 14 , right brace , right parenthesisi+14R+a,R+14Step+bk<n−14
44
Trekantsider
对学生隐藏该文件夹。
45
表达式46: left parenthesis, 0 plus "s" "t" , 0 , right parenthesis0+st,0
46
表达式47: left parenthesis, left bracket, 0 , "s" , right bracket plus left parenthesis, "B" Subscript, 1 , Baseline minus left bracket, 0 , "s" , right bracket , right parenthesis "t" , left bracket, 0 , 0 , right bracket plus "B" Subscript, 2 , Baseline "t" , right parenthesis0,s+B1−0,st,0,0+B2t
47
Lille trekant
对学生隐藏该文件夹。
48
表达式49: left parenthesis, left brace, 6 greater than "n" greater than 1 , right brace "x" Subscript, 1 , Baseline plus left parenthesis, "x" Subscript, 2 , Baseline minus "x" Subscript, 1 , Baseline , right parenthesis "t" , "y" Subscript, 1 , Baseline plus left parenthesis, "y" Subscript, 2 , Baseline minus "y" Subscript, 1 , Baseline , right parenthesis "t" , right parenthesis6>n>1x1+x2−x1t,y1+y2−y1t
49
表达式50: left parenthesis, left brace, 6 greater than "n" greater than 1 , right brace "x" Subscript, 2 , Baseline plus left parenthesis, "x" Subscript, 3 , Baseline minus "x" Subscript, 2 , Baseline , right parenthesis "t" , "y" Subscript, 2 , Baseline plus left parenthesis, "y" Subscript, 3 , Baseline minus "y" Subscript, 2 , Baseline , right parenthesis "t" , right parenthesis6>n>1x2+x3−x2t,y2+y3−y2t
50
表达式51: left parenthesis, left brace, 6 greater than "n" greater than 1 , right brace "x" Subscript, 1 , Baseline plus left parenthesis, "x" Subscript, 3 , Baseline minus "x" Subscript, 1 , Baseline , right parenthesis "t" , "y" Subscript, 1 , Baseline plus left parenthesis, "y" Subscript, 3 , Baseline minus "y" Subscript, 1 , Baseline , right parenthesis "t" , right parenthesis6>n>1x1+x3−x1t,y1+y3−y1t
