Expression 4: left parenthesis, cos "a" plus left parenthesis, cos "b" minus cos "a" , right parenthesis "t" , sin "a" plus left parenthesis, sin "b" minus sin "a" , right parenthesis "t" , right parenthesis Has graph.cosa+cosb−cosat,sina+sinb−sinat
domain t Minimum: 00
less than or equal to "t" less than or equal to≤t≤
domain t Maximum: 11
4
Expression 5: "x" squared plus "y" squared equals 1 Has graph. To audio trace, press ALT+T.x2+y2=1
5
Expression 6: left parenthesis, cos "a" plus left parenthesis, cos "c" minus cos "a" , right parenthesis "t" , sin "a" plus left parenthesis, sin "c" minus sin "a" , right parenthesis "t" , right parenthesis Has graph.cosa+cosc−cosat,sina+sinc−sinat
domain t Minimum: 00
less than or equal to "t" less than or equal to≤t≤
domain t Maximum: 11
6
Expression 7: left parenthesis, left parenthesis, cos "b" , right parenthesis times "t" , left parenthesis, sin "b" , right parenthesis times "t" , right parenthesis Has graph.cosb·t,sinb·t
domain t Minimum: 00
less than or equal to "t" less than or equal to≤t≤
domain t Maximum: 11
7
Expression 8: left parenthesis, left parenthesis, cos "c" , right parenthesis times "t" , left parenthesis, sin "c" , right parenthesis times "t" , right parenthesis Has graph.cosc·t,sinc·t
domain t Minimum: 00
less than or equal to "t" less than or equal to≤t≤