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log(a+b)
By hexor, 13 years ago, In English

if we know log(a) and log(b) how we can find log(a+b) approximately to real value?

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13 years ago, hide # |
 
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log(exp(log(a))+exp(log(b)))

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13 years ago, hide # |
 
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If a and b are close numbers, you can approximate using the following formula:

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For example, if a = b, then

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