log and natural log

nevertoold

New member
Joined
Sep 15, 2010
Messages
1
How would you find the x ( variable) in a log or Natural log problem such as;
IN(3X+1) or log (3x+1)

Been stuck on one problem out of my math book

Thanks for the help
 
Use the base of the logarithms and the log expression as the exponent: \(\displaystyle 10^{log(x+1) = 10^2\), will give \(\displaystyle x+1=100\), for example.
 
nevertoold said:
How would you find the x I don't understand this question.

What are you trying to do ?


a log or Natural log problem such as; IN(3X+1) or log (3x+1)

These are not exercises; they are simply expressions.

All math exercises come with instructions.

What did they ask you to do ?


Been stuck on one problem out of my math book Can you tell us what it is ? :?
 
royhaas said:
Use the base of the logarithms and the log expression as the exponent: \(\displaystyle 10^{log(x+1) = 10^2\), will give \(\displaystyle x+1=100\), for example.

You have the \(\displaystyle " = 10^2"\) incorrectly placed as it is shown in the exponent part.

It should be \(\displaystyle 10^{log(x + 1)} = 10^2.\)
 
Top