Jawaban:
1
Penjelasan dengan langkah-langkah:
f(x) = (3 + x)² + 5
y = (3 + x)² + 5
(3 + x)² = y - 5
3 + x = √(y - 5)
x = -3 + √(y - 5)
f^-1 (x) = -3 + √(x - 5)
f^-1 (21)
= -3 + √(21 - 5)
= -3 + √16
= -3 + 4
= 1
Kelas 11
Pelajaran Matematika
Bab Fungsi
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Jawaban:
1
Penjelasan dengan langkah-langkah:
f(x) = (3 + x)² + 5
y = (3 + x)² + 5
(3 + x)² = y - 5
3 + x = √(y - 5)
x = -3 + √(y - 5)
f^-1 (x) = -3 + √(x - 5)
f^-1 (21)
= -3 + √(21 - 5)
= -3 + √16
= -3 + 4
= 1
Kelas 11
Pelajaran Matematika
Bab Fungsi