Loogarizmiin warroomii herregaa kan agarsiisu yoo ta’u, aangessoo hundee kenname tokko lakkoofsa murtaa’e argachuuf gara isaatti ol kaafamuu qaba.
Kana jechuun lakkoofsa barbaadame argachuuf hundee sana gara aangoo/powarii akkamii ol kaasuu akka qabnu nutti hima. Herregaa keessatti loogaritmiin akka, . tti barreffama yeeroo dubbiisnuu "Loogaritmii x gara Hundee b" fi "lakkoofsi hundee a yoo meeqaan aaangeeffame lakkoofsa b kenna?" Jechuu wajjin tokko. Ta'e ta'uu isaati.
fakkeenya:
Yeroo dubbifamu "loogaritmiin 9 gara hundee 3tti 2 ta'a" sababni isaas 3 2 = 9.
Amaloota loogaritmii
Amaloonni armaan gadii kallattiin hiika hundee loogaritmii qabu irraa hordofu
a > 0 fi a ≠ 1 ta’a
a c = b →
a = Hundee
b = bu’aa
c = aangeessoo ykn ekispoonantii
Faankishiniin loogaritmii "log" kan agarsiifamu yoo ta'u, qaamolee gurguddoo lama qaba: hundee fi raggaasa(argument). Hundeen lakkoofsa pozaatiivii kamiyyuu 1 ol ta’uu danda’a, 1 mataa isaa malee. Raggaasni lakkoofsa loogaritmii argachuu barbaannudha.
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