Correct answer is log 10 (10000) = 4
Given that
10^4 = 10000 - - - - - -( 1 )
We have a^y = x - - - - - ( 2 )
Comparing ( 1 ) and ( 2 ) we get
a=10, y=4, x=10000
The logarithmic form is written as log a (x) = y .It is rearrangement of the exponential form a^y = x.
By logarithmic definition
y = log a (x)
so we got 4 = log 10 (10000)
so log 10 (10000) = 4
Learn more about Logarithmic form ,refer to the link :
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