6 log 11 x = 15 log 11. = 14.4 log 10 ≡ log10 10 = 1 ... 2x log 7 = log 23 − log 6 + log 7 ... x log 7 − x log 3 = 2 log 3 − log 11 − log 7.
確定! 回上一頁