Expression 16: "X" equals StartFraction, left parenthesis, "k" Subscript, 1 , Baseline minus "D" , right parenthesis 2 "h" Subscript, 2 , Baseline minus left parenthesis, "k" Subscript, 2 , Baseline minus "D" , right parenthesis 2 "h" Subscript, 1 , Baseline minus StartRoot, left parenthesis, left parenthesis, "k" Subscript, 2 , Baseline minus "D" , right parenthesis 2 "h" Subscript, 1 , Baseline minus left parenthesis, "k" Subscript, 1 , Baseline minus "D" , right parenthesis 2 "h" Subscript, 2 , Baseline , right parenthesis squared minus 4 left parenthesis, "k" Subscript, 1 , Baseline minus "k" Subscript, 2 , Baseline , right parenthesis left parenthesis, left parenthesis, "k" Subscript, 1 , Baseline minus "D" , right parenthesis "h" squared minus left parenthesis, "k" Subscript, 2 , Baseline minus "D" , right parenthesis "h" squared minus left parenthesis, "k" Subscript, 1 , Baseline minus "k" Subscript, 2 , Baseline , right parenthesis left parenthesis, "k" Subscript, 1 , Baseline minus "D" , right parenthesis left parenthesis, "k" Subscript, 2 , Baseline minus "D" , right parenthesis , right parenthesis , EndRoot Over 2 left parenthesis, "k" Subscript, 1 , Baseline minus "k" Subscript, 2 , Baseline , right parenthesis , EndFractionX=k1−D2h2−k2−D2h1−k2−D2h1−k1−D2h22−4k1−k2k1−Dh22−k2−Dh21−k1−k2k1−Dk2−D2k1−k2
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Expression 17:
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Expression 18: StartRoot, , EndRoot
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Expression 19: "P" equals left parenthesis, "X" , "f" Subscript, 1 , Baseline left parenthesis, "X" , right parenthesis , right parenthesisP=X,f1X
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Expression 20: distance left parenthesis, "F" Subscript, 3 , Baseline , "P" , right parenthesisdistanceF3,P
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Expression 21: "R" equals "f" Subscript, 1 , Baseline left parenthesis, "X" , right parenthesis minus "D"R=f1X−D
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Expression 22: left parenthesis, "x" minus "X" , right parenthesis squared plus left parenthesis, "y" minus "f" Subscript, 1 , Baseline left parenthesis, "X" , right parenthesis , right parenthesis squared equals "R" squaredx−X2+y−f1X2=R2
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Expression 23: left parenthesis, "X" , "f" Subscript, 1 , Baseline left parenthesis, "X" , right parenthesis , right parenthesisX,f1X
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Expression 24: left parenthesis, 0 , "D" , right parenthesis0,D