推 css : 你已經快做出來了呀，後面log(3,x^2) = 2log(3,x) 11/02 06:08
→ css : = 2 logx/log3 = (2/log3) logx =(log100/log3)logx 11/02 06:09
→ css : =log(3,100) logx 11/02 06:10
→ css : 小忙，不用p幣 ^^ 11/02 06:10
→ susiseptem : 感謝 11/03 02:24