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a=2b
2logx=2b
2logz=b
yang paling mungkin x=4
z=2
2logx=2b
2log4=2b
2b=2
b=1
2logz=b
2log2=b
b=1
nilai x dan z adalah 4 dan 2
x = 2^a
²log z = b
z = 2^b
x + z = 6
2^a + 2^b = 6
2^(2b) + 2^b = 6
z² + z - 6 = 0
(z + 3)(z - 2) = 0
z = -3 atau z = 2
ambil yg positif:
z = 2 ⇒ 2^b = 2
maka b = 1
karena a = 2b maka a = 2(1) = 2
jadi x = 2^a = 2² = 4
z = 2^b = 2¹ = 2