Expression 21: "f" left parenthesis, "x" , right parenthesis equals StartRoot, "R" squared minus left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesis squared , EndRootfx=R22−x−A12
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Expression 22: "g" left parenthesis, "x" , right parenthesis equals StartRoot, "R" squared minus left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis squared , EndRootgx=R21−x−B12
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Expression 23: "f" left parenthesis, "F" Subscript, 1 , Baseline , right parenthesis tilde "g" left parenthesis, "F" Subscript, 1 , Baseline , right parenthesisfF1~gF1
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Expression 24:
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Expression 25: "F" Subscript, 2 , Baseline equals negative "g" left parenthesis, "F" Subscript, 1 , Baseline , right parenthesisF2=−gF1