MATHEMATICS PROBLEM SOLVER

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Monday 23 March 2015

LOGARITHMS 6

Evaluate Log100000 + log0.0001 - log0.00000001

Solution

= Log100000 + log0.0001 - log0.00000001

= Log10⁵ + log10^-4 – log 10^-8

= 5Log10 + (-4 log10) – (-8log 10)

= (5x1) + (-4x1) - (-8x1)

=5 + (-4) – (-8)

= 5 – 4 + 8

Hence Log100000 + log0.0001- log0.00000001 = 9

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Evaluate Log10,000,000 + log0.0001 - log0.00000001

MATHEMATICS PROBLEM SOLVER

Monday 23 March 2015

LOGARITHMS 6

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