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Math Help - power notation

  1. #1
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    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
    =?
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  2. #2
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by realistic View Post
    write in power notation
    i get the first one but stuck on second

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

    2.)
    log100000 =5
    =?
    Look at all those zeros. And since the base is not given, I wonder what that means? Hint hint.
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  3. #3
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    Quote Originally Posted by realistic View Post
    write in power notation
    i get the first one but stuck on second

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

    2.)
    log100000 =5
    =?
    What's the base of the logarithm in Q2?
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  4. #4
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    since log x, unless otherwise specified, has a base of 10, then for log 100000=5, power notation is 10^5 = 100000
    Last edited by jmedsy; November 2nd 2009 at 07:04 PM. Reason: typo
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  5. #5
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    Quote Originally Posted by jmedsy View Post
    since log x, unless otherwise specified, has a base of 10, then for log 100000=4, power notation is 10^5 = 100000
    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
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  6. #6
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    sorry i meant to type log 100000 = 5 there. yep
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