SOLUTION: how can i solve
logX + logX + 1 = log12 ?
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Question 132012: how can i solve
logX + logX + 1 = log12 ?
Found 2 solutions by josmiceli, rapaljer:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
First get everything in terms of logs
1 = log(x)
If the base is , then I can write
, so
Now rewrite it
The general rule for logs is:
so,
If the logs are equal, the numbers are equal
answer
There is a negative square root also, but it makes
no sense here, since there is no log to the base 10
that will give me a negative number
check:
close enough
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
logX + logX + 1 = log12
2logX+1=log12
1=log12-2logx
1=log12-logx^2
By basic definition of logarithms:
Since x must be a positive number,
R^2
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