1. Diketahui , dan π (π₯) = 6π₯
β 2, tentukan:
a.
π-1(π₯) dan π-1(π₯)
b. (π β π)-1(π₯) dan π-1(π₯)
Alternatif Penyelesaian:
, dan π(π₯) = 6π₯
β 2
2. Diketahui
f (π₯)
= 3π₯ + 2 dan (π
β π)(π₯) = 6π₯ β 4. Tentukan
a.
π-1(π₯)
b.
Nilai
π-1(2)
Alternatif Penyelesaian:
π(π₯) = 3π₯
+ 2 dan (π β π)(π₯) = 6π₯
β 4
(π β π)(π₯) =π(π(π₯)) = 6π₯
β 4
π(3π₯ + 2) = 6π₯ β 4
π(3π₯ + 2) = 2(3π₯ + 2) β 8
Sumber
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