수식 2: left parenthesis, "u" , "f" left parenthesis, "u" , right parenthesis cos "v" , "f" left parenthesis, "u" , right parenthesis sin "v" , right parenthesisu,fucosv,fusinv
정의역 u 최솟값: 00
less than or equal to "u" less than or equal to≤u≤
정의역 u 최댓값: 55
00
정의역 v 최솟값:
less than or equal to "v" less than or equal to≤v≤
