锟斤拷锟斤拷lg锟斤拷計锟斤拷锟斤拷圆閷︼拷锟�(sh锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷計锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷小锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絇(gu锟斤拷n)锟絓锟姐法锟絫锟斤拷锟斤拷铱锟斤拷詤锟斤拷锟揭伙拷锟�锟斤拷

锟斤拷锟斤拷1lg锟斤拷锟絓锟姐法锟絫

锟斤拷锟斤拷1锟斤拷lg锟侥加凤拷锟斤拷锟絫

锟斤拷锟斤拷lgA+lgB=lg(A*B)

锟斤拷锟斤拷2锟斤拷lg锟侥減锟斤拷锟斤拷锟絫

锟斤拷锟斤拷lgA-lgB=lg(A/B)

锟斤拷锟斤拷3锟斤拷锟剿凤拷锟斤拷锟絫

锟斤拷锟斤拷10^lgA=A

锟斤拷锟斤拷lgx锟角憋拷示锟斤拷10锟斤拷讛锟�(sh锟斤拷)锟侥岋拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟叫的岋拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟絓锟姐法锟絫也锟絤锟斤拷锟斤拷lgx锟斤拷

锟斤拷锟斤拷2锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟絓锟斤拷锟斤拷锟絴(zh锟斤拷)

锟斤拷锟斤拷一锟斤拷锟�锟斤拷锟斤拷锟絘锟斤拷a>0锟斤拷锟斤拷a≠1锟斤拷锟斤拷b锟轿冿拷锟斤拷锟絅锟斤拷锟斤拷么锟斤拷(sh锟斤拷)b锟斤拷锟斤拷锟斤拷a锟斤拷锟絅锟侥岋拷锟斤拷(sh锟斤拷)锟斤拷記锟斤拷logaN=b锟斤拷锟斤拷锟斤拷a锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟侥底旓拷(sh锟斤拷)锟斤拷N锟斤拷锟斤拷锟芥數(sh锟斤拷)锟斤拷

锟斤拷锟斤拷锟阶旓拷(sh锟斤拷)锟絫要>0锟斤拷≠1 锟芥數(sh锟斤拷)>0

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟节憋拷锟絕锟缴傦拷锟斤拷锟斤拷(sh锟斤拷)值锟絩锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷讛锟�(sh锟斤拷)一锟接ｏ拷锟芥數(sh锟斤拷)越锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)值越锟斤拷锟斤拷锟斤拷a>1锟絩锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷讛锟�(sh锟斤拷)一锟斤拷锟斤拷锟芥數(sh锟斤拷)越小锟斤拷锟斤拷锟斤拷(sh锟斤拷)值越锟斤拷锟斤拷锟斤拷0<a<1锟絩锟斤拷

锟斤拷锟斤拷锟斤拷锟絇(gu锟斤拷n)锟斤拷锟絔锟斤拷

锟斤拷锟斤拷锟竭匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)知锟絉锟絚锟絉锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟紻锟斤拷锟斤拷锟斤拷|(zh锟斤拷)知锟絉锟絚

锟斤拷锟铰高匡拷锟結訊锟斤拷锟竭匡拷锟斤拷锟斤拷锟斤拷锟斤拷前锟绞傦拷锟斤拷志愿锟斤拷锟�锟斤拷锟饺★拷謹锟�(sh锟斤拷)锟斤拷锟斤拷

锟竭匡拷锟絩锟絞锟斤拷锟斤拷全锟斤拷锟斤拷要锟斤拷(ji锟斤拷)锟絚

锟組锟斤拷"锟竭匡拷锟絎(w锟斤拷ng)"微锟脚癸拷锟斤拷號