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a.) Bayangan 0 dan 5,
1.) Substitusi x= 0 ke g(x), maka :
=> g(x) = 1/4(x + 3)
=> g(0) = 1/4(0 + 3)
=> g(0) = 3/4
2.) Substitusi x = 5 ke g(x), maka :
=> g(x) = 1/4(x+3)
=> g(5) = 1/4(5 + 3)
=> g(5) = 1/4(8) = 2
b.) Dikarenakan yang ditanyakan daerah asalnya, maka :
=> g(x) = 1/4(x + 3)
=> 7 = 1/4x + 3/4
=> 25/4 = 1/4x, maka x = 25
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