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• we cannot take log of negative number because log is not defined for negative numbers ... From: Sangita Sahu Subject: [2IIM CAT Prep]
Message 1 of 4 , Dec 29 11:24 PM
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 we cannot take log of negative number because log is not defined for negative numbers --- On Sat, 26/12/09, Sangita Sahu wrote: From: Sangita Sahu Subject: [2IIM CAT Prep] (unknown)To: ascent4cat@yahoogroups.comDate: Saturday, 26 December, 2009, 2:38 PM   hi! friends..... .....   i hav a conceptual doubt that in logarithms can we take negative bases? If not why.

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• we cant definitely say whether it s possible or not... everything is conditional in logarithms... negative bases are possible only under some conditions...
Message 1 of 4 , Dec 29 11:28 PM
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we cant definitely say whether it's possible or not...
everything is conditional in logarithms...
negative bases are possible only under some conditions...

check out the attachment i've provided with in this mail...
that'll be useful in explaining that funda...
also,thanks for asking such a wonderful doubt...
take care...
• Hey, Here is my interpretation: When you say log x (base 10) = k you are effectively saying that 10^k is x. See the log graph for more clarification. Anyhow,
Message 1 of 4 , Dec 30 12:16 AM
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Hey,

Here is my interpretation:

When you say log x (base 10) = k
you are effectively saying that 10^k is x. See the log graph for more clarification.

Anyhow, if you take the negative base - not every positive number can be expressed as its power.
Therefore, negative base is not allowed.

Hope that helps.
Ashish.

On Sat, Dec 26, 2009 at 2:38 PM, Sangita Sahu wrote:

hi! friends..........

i hav a conceptual doubt that in logarithms can we take negative bases? If not why.

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