log question

[spoog74]

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can someone show me a quick and easy way to do this?


if a = log7B^7 then what is the value of 7^a?


Answer is b^7


Thanks !

 

[PointEstimate]

That's one of the logarithm identities:

http://en.wikipedia.org/wiki/List_of_logarithmic_identities

 

[aqz]

It's just how you perform log functions, e.g. the definition of log.

x = log(base y)z

is defined as

y to the power of x = z

so log7b^7 = a is 7^a = b^7