LOGARITHMS 2

Evaluate Log10,000 +  log 0.001 -  log 0.0001

Solution

= Log10,000  +  log 0.001 -  log 0.0001

= Log10⁴ +  log 10^-3 – log 10^-4

= 4Log10 + (-3 log 10) – (-4log 10)

= (4x1) + (-3x1) - (-8x1)

=4 + (-3) – (-4)

= 4 - 3 + 4

=5

  

Hence Log10,000 +  log 0.001-  log 0.0001 = 5

TRY THIS……………………… 

Evaluate Log100,000 +  log 0.000001 -  log 0.00000001