Yellow Triangle Area = 8| Desmos

式20: StartFraction, "F" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline Over "B" Subscript, 2 , Baseline , EndFraction equals StartFraction, "D" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline Over "B" Subscript, 2 , Baseline minus "D" Subscript, 2 , Baseline , EndFraction

式21: "F" Subscript, 1 , Baseline equals StartFraction, "B" Subscript, 2 , Baseline left parenthesis, "D" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis Over "B" Subscript, 2 , Baseline minus "D" Subscript, 2 , Baseline , EndFraction plus "B" Subscript, 1 , Baseline

equals

9.1 2 3 1 0 5 6 2 5 6 2

式22: "F" Subscript, 2 , Baseline equals "E" Subscript, 2 , Baseline

equals

式23: "L" Subscript, 1 , Baseline equals "R" Subscript, 1 , Baseline

equals

式24: "L" Subscript, 2 , Baseline equals "R" Subscript, 1 , Baseline

equals

式25: StartFraction, left parenthesis, "R" Subscript, 1 , Baseline StartRoot, 2 , EndRoot plus "R" StartRoot, 2 , EndRoot , right parenthesis squared Over left parenthesis, "M" Subscript, 1 , Baseline minus "L" Subscript, 1 , Baseline , right parenthesis squared plus left parenthesis, "R" minus "R" Subscript, 1 , Baseline , right parenthesis squared , EndFraction

equals

式26: "M" Subscript, 1 , Baseline equals StartRoot, left parenthesis, "R" Subscript, 1 , Baseline StartRoot, 2 , EndRoot plus "R" StartRoot, 2 , EndRoot , right parenthesis squared minus left parenthesis, "R" minus "R" Subscript, 1 , Baseline , right parenthesis squared , EndRoot plus "L" Subscript, 1 , Baseline

equals

10.2 4 6 2 1 1 2 5 1 2

式27: "M" Subscript, 2 , Baseline equals "R"

equals

式28: "K" Subscript, 1 , Baseline equals left bracket, "A" Subscript, 1 , Baseline , "B" Subscript, 1 , Baseline , "C" Subscript, 1 , Baseline , "D" Subscript, 1 , Baseline , right bracket plus 0.5cosine theta Subscript, 1 , Baseline

equals

5.2 4 0 9 5 6 7 5 5 8 2

3.1 5 8 8 8 6 3 3 8 7 4

6.9 4 8 6 5 8 6 3 1 0 2

4.8 6 6 5 8 8 2 1 3 9 4

式29: "K" Subscript, 2 , Baseline equals left bracket, "A" Subscript, 2 , Baseline , "B" Subscript, 2 , Baseline , "C" Subscript, 2 , Baseline , "D" Subscript, 2 , Baseline , right bracket plus 0.5sine theta Subscript, 1 , Baseline

equals

6.6 3 7 1 9 2 9 6 7 7 1

3.2 2 1 7 8 9 2 1 7 3

5.5 9 6 1 5 7 7 5 9 1 7

2.1 8 0 7 5 4 0 0 8 7 6

式30: theta Subscript, 1 , Baseline equals tangent to the negative 1st power StartFraction, "D" Subscript, 2 , Baseline Over "D" Subscript, 1 , Baseline minus "E" Subscript, 1 , Baseline , EndFraction minus 135

equals

negative 76.3 6 6 9 7 7 7 7 4 6

Graphs

式32: "y" less than 20

式33: polygon left parenthesis, "D" , "E" , "F" , right parenthesis

式34: left parenthesis, "K" Subscript, 1 , Baseline plus StartFraction, 0.5 "t" cos left parenthesis, theta Subscript, 1 , Baseline minus 135 , right parenthesis Over StartRoot, 2 , EndRoot , EndFraction , "K" Subscript, 2 , Baseline plus StartFraction, 0.5 "t" sin left parenthesis, theta Subscript, 1 , Baseline minus 135 , right parenthesis Over StartRoot, 2 , EndRoot , EndFraction , right parenthesis

定義域t最小値:

less than or equal to "t" less than or equal to

定義域t最大値:

式35: left parenthesis, "K" Subscript, 1 , Baseline plus StartFraction, 0.5 "t" cos left parenthesis, theta Subscript, 1 , Baseline plus 135 , right parenthesis Over StartRoot, 2 , EndRoot , EndFraction , "K" Subscript, 2 , Baseline plus StartFraction, 0.5 "t" sin left parenthesis, theta Subscript, 1 , Baseline plus 135 , right parenthesis Over StartRoot, 2 , EndRoot , EndFraction , right parenthesis

定義域t最小値:

less than or equal to "t" less than or equal to

定義域t最大値:

式36: polygon left parenthesis, "A" , "C" , "M" , "C" , "E" , "C" , "A" , "B" , "F" , "B" , "L" , right parenthesis

式37: left parenthesis, "L" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "L" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesis

定義域t最小値:

less than or equal to "t" less than or equal to

定義域t最大値: 360

式38: left parenthesis, "M" Subscript, 1 , Baseline plus "R" cos "t" , "M" Subscript, 2 , Baseline plus "R" sin "t" , right parenthesis

定義域t最小値:

less than or equal to "t" less than or equal to

定義域t最大値: 360

隠れているラベル "E" , "F"

ラベル

equals

left parenthesis, 3.1 2 3 , 0 , right parenthesis

left parenthesis, 9.1 2 3 , 0 , right parenthesis

Points

提供：