Expression 21: "y" less than 25 Has graph. To audio trace, press ALT+T.y<25
21
Expression 22: "g" left parenthesis, "x" , right parenthesis Has graph. To audio trace, press ALT+T.gx
22
Expression 23: "f" left parenthesis, "x" , right parenthesis Has graph. To audio trace, press ALT+T.fx
23
Expression 24: 0 less than or equal to "y" less than or equal to "f" left parenthesis, "x" , right parenthesis Has graph. To audio trace, press ALT+T.0≤y≤fx
24
Expression 25: polygon left parenthesis, "A" , "B" , "C" , "D" , right parenthesis Has graph.polygonA,B,C,D
25
Points
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A ( 0 ; 0 )
Start black, "B" left parenthesis, StartFraction, pi Over 2 , EndFraction ; 0 , right parenthesis End blackBπ2;0
Start black, "C" left parenthesis, StartFraction, pi Over 2 , EndFraction ; 1.1 5 4 7 , right parenthesis End blackCπ2;1.1547