MN = 4 ⇒ BC = ?

表达式25: "y" equals "m" Subscript, 3 , Baseline left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis

表达式26: "y" equals "m" Subscript, 4 , Baseline left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis

表达式27: "m" Subscript, 2 , Baseline left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesis equals "m" Subscript, 4 , Baseline left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis

表达式28: "D" Subscript, 1 , Baseline equals StartFraction, "m" Subscript, 2 , Baseline "C" Subscript, 1 , Baseline minus "m" Subscript, 4 , Baseline "B" Subscript, 1 , Baseline Over "m" Subscript, 2 , Baseline minus "m" Subscript, 4 , Baseline , EndFraction

equals

2.9 2 3 0 7 6 9 2 3 0 8

表达式29: "D" Subscript, 2 , Baseline equals "m" Subscript, 4 , Baseline left parenthesis, "D" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis

equals

4.5 2 2 1 3 4 9 0 9 7 5

表达式30: "m" Subscript, 1 , Baseline left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesis equals "m" Subscript, 3 , Baseline left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis

表达式31: "E" Subscript, 1 , Baseline equals StartFraction, "m" Subscript, 1 , Baseline "C" Subscript, 1 , Baseline minus "m" Subscript, 3 , Baseline "B" Subscript, 1 , Baseline Over "m" Subscript, 1 , Baseline minus "m" Subscript, 3 , Baseline , EndFraction

equals

表达式32: "E" Subscript, 2 , Baseline equals "m" Subscript, 3 , Baseline left parenthesis, "E" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis

equals

4.8 9 8 9 7 9 4 8 5 5 7

表达式33: "y" equals "m" Subscript, 2 , Baseline left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesis

表达式34: "y" equals StartFraction, negative 1 Over "m" Subscript, 2 , Baseline , EndFraction left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesis plus "A" Subscript, 2 , Baseline

表达式35: "m" Subscript, 2 , Baseline left parenthesis, "x" minus "C" Subscript, 1 , Baseline , right parenthesis equals StartFraction, negative 1 Over "m" Subscript, 2 , Baseline , EndFraction left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesis plus "A" Subscript, 2 , Baseline

表达式36: "M" Subscript, 1 , Baseline equals StartFraction, StartNestedFraction, 1 NestedOver "m" Subscript, 2 , Baseline , EndNestedFraction "A" Subscript, 1 , Baseline plus "A" Subscript, 2 , Baseline plus "m" Subscript, 2 , Baseline "C" Subscript, 1 , Baseline Over "m" Subscript, 2 , Baseline plus StartNestedFraction, 1 NestedOver "m" Subscript, 2 , Baseline , EndNestedFraction , EndFraction

equals

3.7 1 4 2 8 5 7 1 4 2 9

表达式37: "M" Subscript, 2 , Baseline equals StartFraction, negative 1 Over "m" Subscript, 2 , Baseline , EndFraction left parenthesis, "M" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesis plus "A" Subscript, 2 , Baseline

equals

4.1 9 9 1 2 5 2 7 3 3 4

表达式38: "y" equals "m" Subscript, 3 , Baseline left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis

表达式39: "y" equals StartFraction, negative 1 Over "m" Subscript, 3 , Baseline , EndFraction left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesis plus "A" Subscript, 2 , Baseline

表达式40: "m" Subscript, 3 , Baseline left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis equals StartFraction, negative 1 Over "m" Subscript, 3 , Baseline , EndFraction left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesis plus "A" Subscript, 2 , Baseline

表达式41: "N" Subscript, 1 , Baseline equals StartFraction, "m" Subscript, 3 , Baseline "B" Subscript, 1 , Baseline plus StartNestedFraction, 1 NestedOver "m" Subscript, 3 , Baseline , EndNestedFraction "A" Subscript, 1 , Baseline plus "A" Subscript, 2 , Baseline Over "m" Subscript, 3 , Baseline plus StartNestedFraction, 1 NestedOver "m" Subscript, 3 , Baseline , EndNestedFraction , EndFraction

equals

7.7 1 4 2 8 5 7 1 4 2 9

表达式42: "N" Subscript, 2 , Baseline equals StartFraction, negative 1 Over "m" Subscript, 3 , Baseline , EndFraction left parenthesis, "N" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baseline , right parenthesis plus "A" Subscript, 2 , Baseline

equals

4.1 9 9 1 2 5 2 7 3 3 4

Graphs

表达式44: polygon left parenthesis, "N" , "A" , right parenthesis

表达式45: polygon left parenthesis, "N" , "M" , right parenthesis

表达式46: polygon left parenthesis, "A" , "M" , right parenthesis

表达式47: polygon left parenthesis, "B" , "E" , right parenthesis

表达式48: polygon left parenthesis, "C" , "D" , right parenthesis

表达式49: polygon left parenthesis, "A" , "B" , "C" , right parenthesis

Points

技术支持