UID :114677
UID :24731
yuanyiping:CST里取自然对数用log,那么底数为其他值时呢,谢谢 (2015-05-07 21:45) 4a}[&zm(5
hefang:请搜索换底公式,高中数学。 (2015-05-07 22:05) Ei;tfB