Expression 6: left parenthesis, 2 "t" cos squared left parenthesis, "u" , right parenthesis plus 2 left parenthesis, 1 minus "t" , right parenthesis , 2 "t" cos left parenthesis, "u" , right parenthesis sin left parenthesis, "u" , right parenthesis , right parenthesis2tcos2u+21−t,2tcosusinu
00
domain t Minimum:
less than or equal to "t" less than or equal to≤t≤
11
domain t Maximum:
6
Expression 7: left parenthesis, 2 "t" cos squared left parenthesis, "u" , right parenthesis , 2 "t" cos left parenthesis, "u" , right parenthesis sin left parenthesis, "u" , right parenthesis , right parenthesis2tcos2u,2tcosusinu
00
domain t Minimum:
less than or equal to "t" less than or equal to≤t≤
11
domain t Maximum:
7
Expression 8: "u" equals 0.5 1 8u=0.518
00
StartFraction, pi Over 2 , EndFractionπ2
8
Expression 9: "x" squared plus "y" squared equals 4cosine squared left parenthesis, "u" , right parenthesisx2+y2=4cos2u