นิพจน์ 20: "f" Subscript, 2 , Baseline left parenthesis, "i" , right parenthesis equals left parenthesis, floor left parenthesis, StartFraction, "i" minus 1 Over "N" , EndFraction , right parenthesis plus 1 , mod left parenthesis, "i" minus 1 , "N" , right parenthesis plus 1 , right parenthesisf2i=floori−1N+1,modi−1,N+1
20
ป้ายกำกับ "f" Subscript, 2 , Baseline left parenthesis, "I" Subscript, "M" "N" , Baseline , right parenthesisf2IMN
ป้ายกำกับ:
21
5. list of lists won't work ❌
ซ่อนโฟลเดอร์นี้จากนักเรียน
22
⭐️ list element idx ⇒ matrix element idx (a list) ❗️
23
นิพจน์ 24: "f" left parenthesis, "i" , right parenthesis equals left bracket, floor left parenthesis, StartFraction, "i" minus 1 Over "N" , EndFraction , right parenthesis plus 1 , mod left parenthesis, "i" minus 1 , "N" , right parenthesis plus 1 , right bracketfi=floori−1N+1,modi−1,N+1
24
❌ list of lists：[ [1,1], [1,2], ... ]
25
นิพจน์ 26: "f" left parenthesis, "I" Subscript, "M" "N" , Baseline , right parenthesisfIMN
