Diketahui f(x)=2x+5/3x-1. Jika f-¹(a)=-4/5, nilai a=...
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Pertanyaan
Diketahui f(x)=2x+5/3x-1. Jika f-¹(a)=-4/5, nilai a=...
1 Jawaban
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1. Jawaban eripane05
Fungsi Invers
f(x) = 2x + 5/ 3x - 1
f^-1 (x) = x + 5/ 3x - 2
f^-1(a) = a + 5/ 3a -2
a + 5 = -4/5 (3a-2)
5a + 25 = -12a + 8
17a = -17
a = - 1