MATHEMATICS PROBLEM SOLVER

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Thursday 30 March 2017

LOGARITHMS 7

Evaluate Log100 - log0.001 - log0.0001+ log0.00001

Solution

= Log100 - log0.001 - log0.0001+ log0.00001

= Log10² - log10^-3 – log 10^-4+ log 10^-5

= 2Log10 - (-3 log10) – (-4log 10) + (-5log 10)

= (2x1) - (-3x1) - (-8x1) + (-5 x 1)

= 2 - (-3) – (-4) -5

= 2 + 3 + 4 - 5

= 9 - 5

Hence Log100 - log0.001- log0.0001+ log0.00001 = 4

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Evaluate Log10,000 - log0.001 - log0.00001+ log0.00001

MATHEMATICS PROBLEM SOLVER

Thursday 30 March 2017

LOGARITHMS 7

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