Answer :
Step-by-step explanation:
Use the property of logarithm (change of base)
- [tex]log_ab=log_cb/log_ca[/tex]
Apply to the given logarithm, considering same natural base
- [tex]log_812=ln12/ln8[/tex]
The rule is
[tex]\boxed{\sf log_ab=\dfrac{log_eb}{log_ea}=\dfrac{lnb}{lna}}[/tex]
Now
[tex]\\ \rm\Rrightarrow log_8(12)=\dfrac{ln12}{ln8}[/tex]