Expression 18: "f" left parenthesis, "x" , right parenthesis equals "m" Subscript, 1 , Baseline left parenthesis, "x" minus "D" Subscript, 1 , Baseline , right parenthesis plus "D" Subscript, 2 , Baseline Has graph. To audio trace, press ALT+T.fx=m1x−D1+D2
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Expression 19: "g" left parenthesis, "x" , right parenthesis equals StartRoot, "R" squared minus "x" squared , EndRoot Has graph. To audio trace, press ALT+T.gx=R2−x2
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Expression 20: "f" left parenthesis, "G" Subscript, 1 , Baseline , right parenthesis tilde "g" left parenthesis, "G" Subscript, 1 , Baseline , right parenthesis Has regression. To access statistics, press Tab.fG1~gG1