(2)○﹔nA∙nB = 1010 ⇒ 0 ≤ log(nA) ≤ log1010 log(nA∙nB) = log1010 ⇒ 0 ≤ PA ≤ 10﹒ log(nA) + log(nB) = 10. ∴PA + PB = 10 ⇒ PA = 5. ∴PB = 5﹒ (3)╳﹔PA ...
確定! 回上一頁