表达式5: left parenthesis, 1 plus "b" , 2 plus "b" , 3 plus "b" , right parenthesis1+b,2+b,3+b
equals=
left parenthesis, 1 , 2 , 3 , right parenthesis1,2,3
5
表达式6: left parenthesis, "t" left parenthesis, 1 plus "b" , right parenthesis , "t" left parenthesis, 2 plus "b" , right parenthesis , "t" left parenthesis, 3 plus "b" , right parenthesis , right parenthesist1+b,t2+b,t3+b
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：
6
The green line intersects the red line, but it doesn't collide, i.e., they intersect at but with different parameter values. The blue line intersects with the red line (and the green line), and it collides with the red line.
