수식 6: "X" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis equals "e" Superscript, negative "t" , Baseline cosine left parenthesis, "t" , right parenthesisX1t=e−tcost
6
수식 7: "Y" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis equals "e" Superscript, negative "t" , Baseline sine left parenthesis, "t" , right parenthesisY1t=e−tsint
7
수식 8: left parenthesis, "X" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis , "Y" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis , right parenthesisX1t,Y1t
정의역 t 최솟값: 00
less than or equal to "t" less than or equal to≤t≤
정의역 t 최댓값: 2 pi2π
8
숨겨진 레이블 left parenthesis, "X" Subscript, 1 , Baseline left parenthesis, "i" , right parenthesis , "Y" Subscript, 1 , Baseline left parenthesis, "i" , right parenthesis , right parenthesisX1i,Y1i