Expression 5: "y" equals 444exponent left parenthesis, negative StartFraction, "a" "x" Over 60 , EndFraction , right parenthesis left brace, "y" greater than 160 , right bracey=444exp−ax60y>160
5
regular ground regime
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6
Expression 7: "y" equals 160exponent left parenthesis, negative StartFraction, 6 left parenthesis, "x" minus 60.5 , right parenthesis Over 60 , EndFraction , right parenthesis left brace, 100 less than "y" less than 160 , right bracey=160exp−6x−60.560100<y<160
7
stopspeed linear regime
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8
Expression 9: "y" equals negative StartFraction, 600 left parenthesis, "x" minus 75.3 , right parenthesis Over 60 , EndFraction left brace, 0 less than "y" less than 100 , right bracey=−600x−75.3600<y<100