a)
5= log10 (100000)
We can rewrite 10000 as 10^5
5 = log 10 ( 10 ^5)
b) 2^6 = 64
log a ( b) = c
log2 ( 64) = 6
We know this because we can rewrite 64 as 2^6
log a ( a^b) = b
log a ( 2^6) = 6
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