表达式10: "s" equals negative 2 halves plus StartRoot, left parenthesis, negative 2 halves , right parenthesis squared plus 63 , EndRoots=−22+−222+63
equals=
77
10
表达式11: "S" equals "s" plus 2S=s+2
equals=
99
11
表达式12: "s" squared plus "S" squareds2+S2
equals=
130130
12
Squares
对学生隐藏该文件夹。
13
表达式14: polygon left parenthesis, "R" Subscript, 2 , Baseline cos "L" , "R" Subscript, 2 , Baseline sin "L" , right parenthesispolygonR2cosL,R2sinL
14
表达式15: polygon left parenthesis, "R" Subscript, 1 , Baseline cos "L" , "R" Subscript, 1 , Baseline sin "L" , right parenthesispolygonR1cosL,R1sinL
15
表达式16: "L" equals left bracket, StartFraction, pi Over 4 , EndFraction , StartFraction, 3 pi Over 4 , EndFraction ... StartFraction, 7 pi Over 4 , EndFraction , right bracketL=π4,3π4...7π4
