dik. fungsi g(x)=2x-1 dan (gof) (x) =4x^_6x+5 nilai dari f(2)
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Pertanyaan
dik. fungsi g(x)=2x-1 dan (gof) (x) =4x^_6x+5 nilai dari f(2)
2 Jawaban
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1. Jawaban 4LL
langsung aja y
(gof)(x) = g{f(x)}
4x² - 6x + 5 = 2f(x) - 1
4x² - 6x + 5 + 1 = 2f(x)
2(2x² - 3x + 3) = 2f(x)
2x² - 3x + 3 = f(x)
f(2) = 2(2)² - 3(2) + 3
f(2) = 2(4) - 6 + 3
f(2) = 8 - 3
f(2) = 5
semoga berguna +_+ -
2. Jawaban andhikahanif
mencari nilai f(x)
(g o f)(x) = g(f(x))
4x² - 6x + 5 = 2(f(x)) - 1
4x² - 6x + 5 + 1 = 2(f(x))
4x² - 6x + 6 = 2(f(x))
(4x² - 6x + 6) / 2 = f(x)
f(x) = 2x² - 3x + 3
mencari nilai f(2)
f(x) = 2x² - 3x + 3
f(2) = 2(2)² - 3(2) + 3
f(2) = 2(4) - 6 + 3
f(2) = 8 - 6 + 3
f(2) = 5