
FUNGSI INVERS
Presentation
•
Mathematics
•
10th Grade
•
Hard
Entin nurwaningsih
Used 12+ times
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6 Slides • 3 Questions
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FUNGSI INVERS
By Entin nurwaningsih
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DEFINISI FUNGSI INVERS
FUNGSI INVERS MERUPAKAN KEBALIKAN DARI FUNGSI ASALNYA
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Invers fungsi f adalah fungsi yang mengawankan setiap elemen B dengan tepat satu elemen pada A. Invers fungsi f dinyatakan dengan f-1 seperti di bawah ini:
Subject | Subject
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Ubahlah bentuk y = f(x) menjadi bentuk x = f(y)
Tuliskan x sebagai f-1(y) sehingga f-1(y) = f(y)
Ubahlah variabel y dengan x sehingga diperoleh rumus fungsi invers f-1(x)
LANGKAH-LANGKAH MENENTUKAN FUNGSI INVERS
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CONTOH SOAL
TENTUKAN RUMUS FUNGSI INVERS DARI FUNGSI f(X) = 2X + 6
JAWAB
y = f (x) = 2x + 6 atau bisa kita tulis
2x + 6 = y jadi f-1(x) = x - 6 atau f-1(x) = 1 x - 3
2x = y - 6 2 2
x = y - 6
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2. Tentukan rumus fungsi invers dari
f(x) = 2x - 5 , x ≠ - 1
3x + 1 3
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Open Ended
apakah kalian paham materi hari ini ?
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Multiple Choice
Tentukan rumus fungsi invers dari fungsi f (x) = x + 5
f-1 (x) = x - 5
f-1 (x) = x + 5
f-1 (x) = 2x - 5
f-1 (x) = -x - 5
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