表达式4: 1 equals "c" Subscript, 2 , Baseline left brace, "c" Subscript, 1 , Baseline less than 1 : left brace, sin left parenthesis, 50 times arctan left parenthesis, "y" minus "C" . "y" , "x" minus "C" . "x" , right parenthesis , right parenthesis greater than 0 , right brace , 1 , right brace1=c2c1<1:sin50·arctany−C.y,x−C.x>0,1
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隐藏 标签 "C" equals left parenthesis, 0.3 1 8 , 0.5 1 7 , right parenthesisC=0.318,0.517
标签
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表达式6: "c" Subscript, 3 , Baseline equals sine left parenthesis, "k" , right parenthesis "y" minus cosine left parenthesis, "k" , right parenthesis "x"c3=sinky−coskx
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表达式7: .7 equals "c" Subscript, 3 , Baseline left brace, 0 less than left brace, "c" Subscript, 1 , Baseline less than 1 , right brace left brace, "c" Subscript, 2 , Baseline less than 1 , right brace : left brace, sin left parenthesis, 90 StartFraction, "x" Over sin left parenthesis, "k" , right parenthesis , EndFraction , right parenthesis greater than 0 , right brace , 0 less than left brace, "c" Subscript, 1 , Baseline less than 1 , "c" Subscript, 2 , Baseline less than 1 , right brace : left brace, sin left parenthesis, 40 StartFraction, "x" Over sin left parenthesis, "k" , right parenthesis , EndFraction , right parenthesis greater than 0 , right brace , 1 , right brace.7=c30<c1<1c2<1:sin90xsink>0,0<c1<1,c2<1:sin40xsink>0,1
