Jika fungsi f(x) =√x-5;x>0,nilai f-1(2) adalah... .
Matematika
grahito123
Pertanyaan
Jika fungsi f(x) =√x-5;x>0,nilai f-1(2) adalah... .
1 Jawaban
-
1. Jawaban Anonyme
jawab
f(x) = √(x - 5)
f⁻¹(2)=.x.
f(x) = 2
x- 5 = 4
x = 9
f⁻¹(2) = 9