表达式6: "y" equals negative signum left parenthesis, "d" , right parenthesis StartRoot, left parenthesis, StartFraction, 2 "d" Subscript, "x" , Baseline Over "d" , EndFraction , right parenthesis squared minus 1 , EndRoot "x"y=−signd2dxd2−1x
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表达式7: left parenthesis, "x" minus "d" Subscript, "x" , Baseline , right parenthesis squared plus "y" squared equals left parenthesis, "t" plus "d" , right parenthesis squaredx−dx2+y2=t+d2
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表达式8: left parenthesis, "x" plus "d" Subscript, "x" , Baseline , right parenthesis squared plus "y" squared equals "t" squaredx+dx2+y2=t2
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隐藏 标签 left parenthesis, negative "d" Subscript, "x" , Baseline , 0 , right parenthesis−dx,0
标签
equals=
left parenthesis, negative 1 , 0 , right parenthesis−1,0
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隐藏 标签 left parenthesis, "d" Subscript, "x" , Baseline , 0 , right parenthesisdx,0
