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1.Diketahui fungsi f:x→2x+3, pada himpunan bilangan bulat. Tentukan: c. Nilai f(−1)

1.Diketahui fungsi f:x→2x+3, pada himpunan bilangan bulat.
Tentukan:
c. Nilai f(−1)

Jawaban yang benar adalah 1

Pembahasan:

Diketahui pada soal fungsi f(x) = 2x + 3
Nilai f(-1) dengan cara mensubsitusikan nilai x = -1 ke fungsi f(x) = 2x + 3
f(x) = 2x + 3
f(-1) = 2(-1) + 3
f(-1) = -2 + 3
f(-1) = 1

Jadi, nilai f(-1) adalah 1

 

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