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3 years ago

Log 5 plus log 2 equals? log5 + log2 =

2 answers:

4 0

log a + log b=log (a*b)

log 5 + log 2=log (5*2)=log 10

loga a=1
Therefore:
log 10=1

Answer: log 5+ log 2=log 10=1

djverab [1.8K]3 years ago

3 0

The sum of logs = the log of the product .

   log(5) + log(2) = log(5·2) = log(10)

If these are all logs to the base 10, then log(10) = 1

   log(5) + log(2) = 1

Let's try it out !

According to my calculator ...

   log(5) = 0.69897...

   log(2) = 0.30103...

Log(5) + log(2) = 0.99999... yay ! not bad

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