F(x)= √5x +1 -4 tentukan f invers (x)
Matematika
putrirahmawati317
Pertanyaan
F(x)= √5x +1 -4 tentukan f invers (x)
1 Jawaban
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1. Jawaban yosua107
f(x) = (5x+1)^1/2 - 4
y = (5x+1)^1/2 -4
y + 4 = (5x + 1 )^1/2
(y + 4 )^2 = 5x + 1
(y + 5 )^2 - 1 = 5x
maka X = [(y+5)^2 - 1 ] / 5
f invers (X) = [(x+5)^2-1]/5