LOGARITHMS 11

Evaluate Log0.2 – Log0.0016+ Log800.

Solution

= Log0.2 – Log0.0016+ Log800.

= Log(0.2 x 800)

            0.0016

= Log (160)   

          0.0016

= Log(1600000)

              16

= Log₁₀100,000

= Log₁₀10⁵

            

= 5Log₁₀10

= 5 x 1

= 5

∴ Log0.2 – Log0.0016+ Log800 = 5

TRY THIS……………

Evaluate Log2.5 – Log0.75 + Log3000.