Square Area = 49 / 3

表达式28: "D" Subscript, 2 , Baseline equals StartFraction, "B" Subscript, 1 , Baseline Over "B" Subscript, 2 , Baseline , EndFraction "D" Subscript, 1 , Baseline

表达式29: "E" Subscript, 1 , Baseline equals "D" Subscript, 1 , Baseline minus left parenthesis, "D" Subscript, 2 , Baseline minus "B" Subscript, 2 , Baseline , right parenthesis

表达式30: "E" Subscript, 2 , Baseline equals "D" Subscript, 2 , Baseline plus left parenthesis, "D" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis

表达式31: "F" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline minus left parenthesis, "D" Subscript, 2 , Baseline minus "B" Subscript, 2 , Baseline , right parenthesis

表达式32: "F" Subscript, 2 , Baseline equals "B" Subscript, 2 , Baseline plus left parenthesis, "D" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis

表达式33: "L" Subscript, 1 , Baseline equals StartFraction, "B" Subscript, 1 , Baseline Over 2 , EndFraction

表达式34: "L" Subscript, 2 , Baseline equals StartFraction, "B" Subscript, 2 , Baseline Over 2 , EndFraction

表达式35: "M" Subscript, 1 , Baseline equals StartFraction, "C" Subscript, 1 , Baseline Over 2 , EndFraction

表达式36: "M" Subscript, 2 , Baseline equals StartFraction, negative "B" Subscript, 1 , Baseline Over "B" Subscript, 2 , Baseline , EndFraction left parenthesis, "M" Subscript, 1 , Baseline minus "L" Subscript, 1 , Baseline , right parenthesis plus "L" Subscript, 2 , Baseline

Graphs

表达式38: "y" less than 25

表达式39: polygon left parenthesis, "B" , "D" , "E" , "F" , right parenthesis

表达式40: left parenthesis, "M" Subscript, 1 , Baseline plus "R" cos "t" , "M" Subscript, 2 , Baseline plus "R" sin "t" , right parenthesis

表达式41: polygon left parenthesis, "A" , "D" , "A" , "B" , "D" , "B" , "F" , "E" , "D" , "E" , "F" , "B" , "C" , right parenthesis

Points

技术支持