表达式13: "a" equals "B" Subscript, 1 , Baseline minus "A" Subscript, 1 , Baselinea=B1−A1
equals=
1010
13
表达式14: "b" equals "B" Subscript, 2 , Baseline minus "A" Subscript, 2 , Baselineb=B2−A2
equals=
66
14
表达式15: "v" Subscript, "l" , Baseline equals StartRoot, "a" squared plus "b" squared , EndRootvl=a2+b2
equals=
11.6 6 1 9 0 3 7 8 9 711.6619037897
15
表达式16: left parenthesis, "A" Subscript, 1 , Baseline plus "a" "t" , "A" Subscript, 2 , Baseline plus "b" "t" left brace, "C" equals 0 , right brace , right parenthesisA1+at,A2+btC=0
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
16
表达式17: left parenthesis, "A" Subscript, 1 , Baseline plus left parenthesis, "B" Subscript, 1 , Baseline minus StartFraction, "a" "A" Subscript, "l" , Baseline Over "v" Subscript, "l" , Baseline , EndFraction minus "A" Subscript, 1 , Baseline , right parenthesis "t" , "A" Subscript, 2 , Baseline plus left parenthesis, "B" Subscript, 2 , Baseline minus StartFraction, "b" "A" Subscript, "l" , Baseline Over "v" Subscript, "l" , Baseline , EndFraction minus "A" Subscript, 2 , Baseline , right parenthesis "t" left brace, "C" equals 1 , right brace , right parenthesisA1+B1−aAlvl−A1t,A2+B2−bAlvl−A2tC=1
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
17
表达式18: left parenthesis, "B" Subscript, 1 , Baseline minus StartFraction, "a" "A" Subscript, "l" , Baseline Over "v" Subscript, "l" , Baseline , EndFraction minus StartFraction, left bracket, negative 1 , 1 , right bracket "b" "A" Subscript, "l" , Baseline "A" Subscript, "w" , Baseline Over "v" Subscript, "l" , Baseline , EndFraction "t" , "B" Subscript, 2 , Baseline minus StartFraction, "b" "A" Subscript, "l" , Baseline Over "v" Subscript, "l" , Baseline , EndFraction plus StartFraction, left bracket, negative 1 , 1 , right bracket "a" "A" Subscript, "l" , Baseline "A" Subscript, "w" , Baseline Over "v" Subscript, "l" , Baseline , EndFraction "t" left brace, "C" equals 1 , right brace , right parenthesisB1−aAlvl−−1,1bAlAwvlt,B2−bAlvl+−1,1aAlAwvltC=1
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
18
表达式19: left parenthesis, "B" Subscript, 1 , Baseline plus left parenthesis, negative StartFraction, "A" Subscript, "l" , Baseline left parenthesis, "a" plus left bracket, "b" "A" Subscript, "w" , Baseline , negative "b" "A" Subscript, "w" , Baseline , right bracket , right parenthesis Over "v" Subscript, "l" , Baseline , EndFraction , right parenthesis "t" , "B" Subscript, 2 , Baseline plus left parenthesis, negative StartFraction, "A" Subscript, "l" , Baseline left parenthesis, "b" plus left bracket, negative "a" "A" Subscript, "w" , Baseline , "a" "A" Subscript, "w" , Baseline , right bracket , right parenthesis Over "v" Subscript, "l" , Baseline , EndFraction , right parenthesis "t" , right parenthesisB1+−Ala+bAw,−bAwvlt,B2+−Alb+−aAw,aAwvlt
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
