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2. The function f(SID) takes as an input the student ID number of a student in this room, and returns his or her full name. I
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SID - - full name 123 АВС no f(STD) a) full name - Note that, this mapping 456 - DEF is lol & onto ( every 789 - G H I distin

5. (a) f(x)= -√1-1 let y=-J1-7 » 9²= 1-47 x= 1-y2 flex)= 1-22 | Domain | Range ☆ Feues |(-0,1] ( oj o to plea)(-0,00) (-0,1]

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