27a5老板油煙機
設比例系數為K，則a5=a1*k^4 a6=a1*k^5 a5*a6=(a1^2)*(k^9)
log3a1+log3a2+....+log3a10=log3(a1*a2...........*a10)=log3(a1^10)*(k^45)=log3(a5*a6)^5
=5log3(a5*a6)=15
log3a1+log3a2+....+log3a10=log3(a1*a2...........*a10)=log3(a1^10)*(k^45)=log3(a5*a6)^5
=5log3(a5*a6)=15