表达式3: "A" Subscript, "T" "o" "t" "a" "l" , Baseline equals "R" left parenthesis, 1 plus 4 , right parenthesisATotal=R1+4
equals=
1010
3
表达式4: left parenthesis, 2 "R" , right parenthesis squared plus left parenthesis, 4 minus 1 , right parenthesis squared equals left parenthesis, 4 plus 1 , right parenthesis squared2R2+4−12=4+12
4
表达式5: "R" equals StartRoot, StartFraction, left parenthesis, 4 plus 1 , right parenthesis squared minus left parenthesis, 4 minus 1 , right parenthesis squared Over 4 , EndFraction , EndRootR=4+12−4−124
equals=
22
5
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center: left parenthesis, 0 , 0 , right parenthesis0,0
