LOGARITHMS 9

Evaluate Log60 – Log5.4 + Log900.

Solution

= Log60 – Log5.4 + Log900.

= Log(60 x 900)

               5.4

= Log(54000)

             5.4

= Log(540000)

             54

= Log₁₀10,000

= Log₁₀10⁴

            

= 4Log₁₀10

= 4 x 1

= 4

∴Log60 – Log5.4 + Log900 = 4

TRY THIS……………………….

Evaluate Log65 – Log0.13 + Log20.