運算式 1: "v" Subscript, 1 , Baseline equals token 1507 plus StartFraction, left parenthesis, left parenthesis, token 1592 times token 1594 , right parenthesis left parenthesis, token 1507 times token 1594 minus token 1510 times token 1594 , right parenthesis plus left parenthesis, token 1594 times token 1594 , right parenthesis left parenthesis, token 1510 times token 1592 minus token 1507 times token 1592 , right parenthesis , right parenthesis Over left parenthesis, token 1592 times token 1592 , right parenthesis left parenthesis, token 1594 times token 1594 , right parenthesis minus left parenthesis, token 1592 times token 1594 , right parenthesis squared , EndFraction token 1592v1=+··−·+··−···−·2
