2的X次幂=12X = log 以2为底的12的对数。X=log2 (3) + log2 (4)X = log2 (3) + log2 (2²)X = log2 (3) + 2*log2 (2)X = log2 (3) + 2X ≈ 3.5852的3.585次幂=12
log2 12
