Tunnel cross section | Desmos

Expression 2: "s" Subscript, "s" "u" "b" , Baseline left parenthesis, "a" , "b" , "k" , right parenthesis equals "m" Subscript, "i" "x" , Baseline left parenthesis, "b" , negative "a" , "h" left parenthesis, "a" , "b" , "k" , right parenthesis , right parenthesis plus "k" times "h" left parenthesis, "a" , "b" , "k" , right parenthesis left parenthesis, 1 minus "h" left parenthesis, "a" , "b" , "k" , right parenthesis , right parenthesis

2

Expression 3: "m" Subscript, "i" "x" , Baseline left parenthesis, "a" , "b" , "t" , right parenthesis equals "a" left parenthesis, 1 minus "t" , right parenthesis plus "b" "t"

3

Expression 4: "h" left parenthesis, "a" , "b" , "k" , right parenthesis equals min left parenthesis, max left parenthesis, .5 minus .5 StartFraction, left parenthesis, "b" plus "a" , right parenthesis Over "k" , EndFraction , 0 , right parenthesis , 1 , right parenthesis

4

5

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