Fungsi f(x) = 2x + 1 per x-3, x=3 jika f-¹ adalah invers fungsi f maka f-¹ (x-2) =
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Fungsi f(x) = 2x + 1 per x-3, x=3 jika f-¹ adalah invers fungsi f maka f-¹ (x-2) =
1 Jawaban
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1. Jawaban L1c1a
f(x) = 2x + 1 per x-3
y = 2x + 1 per x-3
xy - 3y = 2x + 1
xy - 2x = 1+3y
x (y-2) = 1 + 3y
x = 1 + 3y per (y-2)
f-¹(x) = 1+3x per x-2
f-¹ (x-2) = 1+3(x-2) per (x-2)-2
f-¹ (x-2) = 1+3x-6 per x-2-2
f-¹ (x-2) = 3x-5 per x