Sebenzisa lo khiye ukufaka i-logab njenge-log (a;b).
Isisekelo 10 iyisethingi elingokwasekuqaleni uma ungafakanga lutho ku-a.
Lo khiye ungasetshenziselwa ukufaka, kodwa uma kukhethwe Isibonisi Semvelo kuphela. Kulokhu, kumelwe ufake inani lesisekelo.

Isibonelo 1: log10 1000 = log 1000 = 3

• 1000
• 3

Isibonelo 2: log2 16 = 4

• 2(;) 16
• 4

• (MthIO-MathO, MthIO-LineO)  216
• 4

Isibonelo 3: log2(43) = 6  (MthIO-MathO, MthIO-LineO)

• 2
• 6

Isibonelo 4: log2(4)3 = 8  (MthIO-MathO, MthIO-LineO)

• 24
• 8

Isibonelo 5: Ukubala i-ln 90 (= loge 90) kumadijithi amathathu abonakalayo (Sci 3)

• (SETUP)(Sci)
  90
• 4,50×100