power notation

write in power notation
i get the first one but stuck on second

1.)
log 5 625 =4
= 5^4 =625

2.)
log100000 =5
=?

Quote:

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Originally Posted by realistic

write in power notation
i get the first one but stuck on second

1.)
log 5 625 =4
= 5^4 =625

2.)
log100000 =5
=?

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Look at all those zeros. And since the base is not given, I wonder what that means? Hint hint. (Wink)

Quote:

---

Originally Posted by realistic

write in power notation
i get the first one but stuck on second

1.)
log 5 625 =4
= 5^4 =625

2.)
log100000 =5
=?

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What's the base of the logarithm in Q2?

since log x, unless otherwise specified, has a base of 10, then for log 100000=5, power notation is 10^5 = 100000

Quote:

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Originally Posted by jmedsy

since log x, unless otherwise specified, has a base of 10, then for log 100000=4, power notation is 10^5 = 100000

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log100000 =4?

ok i c so if the base is not specified you assume it has a base of 10?

10^5 makes sense thanks

sorry i meant to type log 100000 = 5 there. yep