Expression 16: "f" left parenthesis, "x" , right parenthesis equals StartRoot, "A" squared minus left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesis squared , EndRootfx=A2B−x−A12
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Expression 17: "g" left parenthesis, "x" , right parenthesis equals StartRoot, "B" squared minus left parenthesis, "x" minus "D" Subscript, 1 , Baseline , right parenthesis squared , EndRootgx=B2D−x−D12
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Expression 18: "f" left parenthesis, "B" Subscript, 1 , Baseline , right parenthesis tilde "g" left parenthesis, "B" Subscript, 1 , Baseline , right parenthesisfB1~gB1
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Expression 19: "B" Subscript, 2 , Baseline equals "g" left parenthesis, "B" Subscript, 1 , Baseline , right parenthesisB2=gB1