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Logarithms please help

Forums: Science And Math
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KLL1013
 
Reply Mon 29 Nov, 2004 07:15 pm
i need help with these problems please help:

1. 10^log(base 10)(2X)

2. ln(e^5x)


PLEASE HELP ME
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Type: Discussion • Score: 1 • Views: 540 • Replies: 2
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markr
 
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Reply Tue 30 Nov, 2004 12:44 am
10^X and log(base10)(X) are inverse functions.
Likewise for e^X and ln(X).
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mathmaniac
 
  1  
Reply Sun 9 Jan, 2005 05:41 am
when you take a number and raise it to the logarithm with the same base as the number, you have an identity.
That is, 10 ^[log_10 (u) ] = u
Also note ln = log (base e)
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