表达式5: "k" equals StartFraction, negative 1 Over 20 , EndFraction "h" squared plus 4k=−120h2+4
equals=
3.7 3 5 53.7355
5
表达式6: "y" less than or equal to negative StartAbsoluteValue, sin left parenthesis, 1.2 "x" minus "t" , right parenthesis , EndAbsoluteValuey≤−sin1.2x−t
6
表达式7:
7
表达式8: "y" less than or equal to negative StartAbsoluteValue, sin left parenthesis, "x" minus "t" , right parenthesis , EndAbsoluteValuey≤−sinx−t
