Jika 6ˣ⁻¹ = (2/3)ˣ⁺¹ maka x

Jawab:

⁶log(2)ˣ⁺¹ = x – 1 ⇒ (x +1)⁶log2 = x – 1
        3                                         3
⁶log(2)ˣ⁺¹ = x – 1
        3          x + 1
log2/3       = x – 1
log 6            x + 1
³log2 – ³log3 = x – 1
³log2 + ³log3   x + 1
∴x = ³log2
  Jika matriks A = (9 -3 2 1), C = (0 54 5 12), dan AB = C,