e doole, e logaritm natural
E doole ko binndol oolol dow butoŋ L N. E yeru oo, ɗaɓɓen limooje teeŋtuɗe 3: ñoƴƴu 
, 
, 
ngam Sci, e 
. Jooni e doole 5, laabi 2. Ñoƴƴu e 
, tappu doole ɗee, 5. Ñoƴƴu 
ngam yaltude doole ɗee, refti 
, tappu 2, e 
: 2.97×10|^:2, woni 297. Logaritm natural ko butoŋ L N e hoore mum: ñoƴƴu 
, tappu 90, 
, e : 4.50×10|^:0, walla 4 toɓɓere 5 0. Refti ruttu e sifaa limre normal: ñoƴƴu , , 
, e 
.