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Fungsi f = x → 2 x + 3 Dgn x = { − 2 , − 1 , 0 , 1 , 2 } .Tentukan daerah asal fungsi!

Fungsi  Dgn . Tentukan daerah asal fungsi!

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R. Novianto

Master Teacher

Mahasiswa/Alumni Universitas Tanjungpura Pontianak

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daerah asalnya =

daerah asalnya = begin mathsize 14px style open curly brackets negative 5 over 2 comma space minus 2 comma space minus 3 over 2 comma space minus 1 comma space minus 1 half space space close curly brackets end style 

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ganti menjadi daerah hasil Jadi, daerah asalnya =

ganti begin mathsize 14px style straight x end style menjadi daerah hasil

begin mathsize 14px style table attributes columnalign right center left columnspacing 2px end attributes row cell straight f open parentheses straight x close parentheses end cell equals cell 2 straight x plus 3 end cell row cell negative 2 end cell equals cell 2 straight x plus 3 end cell row cell negative 2 straight x end cell equals 5 row straight x equals cell negative 5 over 2 end cell row blank blank blank row cell straight f open parentheses straight x close parentheses end cell equals cell negative 1 end cell row cell 2 straight x plus 3 end cell equals cell negative 1 end cell row cell 2 straight x end cell equals cell negative 4 end cell row straight x equals cell negative 2 end cell row blank blank blank row cell straight f open parentheses straight x close parentheses end cell equals 0 row cell 2 straight x plus 3 end cell equals 0 row cell 2 straight x end cell equals cell negative 3 end cell row straight x equals cell negative 3 over 2 end cell row blank blank blank row cell straight f open parentheses straight x close parentheses end cell equals 1 row cell 2 straight x plus 3 end cell equals 1 row cell 2 straight x end cell equals cell negative 2 end cell row straight x equals cell negative 1 end cell row blank blank blank row cell straight f open parentheses straight x close parentheses end cell equals 2 row cell 2 straight x plus 3 end cell equals 2 row cell 2 straight x end cell equals cell negative 1 end cell row straight x equals cell negative 1 half end cell end table end style  
 

Jadi, daerah asalnya = begin mathsize 14px style open curly brackets negative 5 over 2 comma space minus 2 comma space minus 3 over 2 comma space minus 1 comma space minus 1 half space space close curly brackets end style 

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