Ẓṛ asagm n Talɣa:Aggur:Tusnakt/Umgrad Amzwaru

[[File:Logarithme neperien.svg|thumb|250px|Alugaritm anipiri ]]
'''Alugaritm agaman''' nɣ '''Alugaritm anipiri''' (s [[Tanglizt|tanglizt]] : Natural logarithm) tga yat tasɣnt nɣ twwuri tettuysan bahra ɣ [[Tusnakt|tusnakt]], ar tsnfal afaris s timrnit zund akkʷ [[Tasɣnt talugaritm|tisɣnin ilugaritm]]. Ar tt ntara s ɣmk-ad : <math>\ln()</math>. Ar nttini mas-d alugaritm agaman nɣ anipiri iga s uzadur n <math>e</math> acku <math>ln(e)=1</math>, iga alugaritm agaman ula tamnzut n tasɣnt : <math>x \longmapsto 1/x </math> ɣ uzilal  <math>]0 ; + \infty[</math> .

Alugaritm ad dars yan yism yaḍni abla "agaman", iga-tt "anipiri". Ism ad yuckad zɣ John Napir nna igan yan umusnak askatlandi, nttat ad akkʷ izwarn ay-skr taflwit talugaritm ( ur trwas xtad lli nssn ɣila nkkni ).

Tettyawskar tazmilt n ulugaritm nna f nsawal nkkni ɣila s ifassn n Grégoire de Saint-Vincent d Alphonse Antonio de Sarasa ɣ usggʷas n 1649

Ad tg <math>a \in ]0 ; + \infty[ </math>, nzḍar ad nini mas-d asnml n tasɣnt talugaritm tga-tt unrar lli illan ɣ izddar n tasɣnt <math>x \mapsto 1/x</math> gr <math>a</math> d 1.

Ɣikad ast nttara :
<math>\ln a = \int_1^a \frac{1}{x}\,dx.</math> ... ([[Alugaritm agaman|'''Ɣr uggar'''...]])