10. Jika f(x) =5x +1 dan f(a)=11 ,nilai a adalah........
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Jawaban:
f(a) = 11 nilai a
- a = 5(a) + 1 = 11
- a = 11 - 1
- a = 10/5
- a = 2
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Pembuktian
- f(x) = 5x + 1
- f(2) = 5(2) + 1
- f(2) = 10 + 1
- f(2) = 11
Jawab:
a = 2
Penjelasan dengan langkah-langkah:
f(x) = 5x + 1
f(a) = 5a + 1 = 11
=> 5a = 10
a = 2
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