Posted by George on Thursday, January 24, 2013 at 3:54pm.
I asked this yesterday but I was told my answer was incorrect by my professor.
ln x^5 - ln x^2 = 3 solve for the unknown.
I have reviewed my Log laws but yet I still cannot figure out what the answers are. The question asks for me to write all answers as a comma separated list. can anyone please help?
- Precalculus - Reiny, Thursday, January 24, 2013 at 4:18pm
You must be talking about this post, which Steve answered.
I would do it exactly the same way, and get the same answer.
Don't know why your prof told you it was wrong..
Here is another way to do it:
using log(A/B) = logA - logB
ln x^5 - ln x^2 = 3
ln (x^5/x^2) = 3
log x^3 = 3
3logx = 3
log x = 1
x = e^1 = e
same answer as before.
Answer This Question
More Related Questions
- Advanced Functions/ Precalculus Log - 1. Evaluate 4^(log base4 64) + 10^(log100...
- PreCalculus - Hi i don't know how to do this problem solve for n^3 given that ...
- Precalculus - Explain how to do these please. 1. solve x=log(base2)*1/8 by ...
- precalculus - solve log(2+x)-log(x-3)=log2 I know the answer is 8
- Mathematics - Prove that log a, log ar, log ar^2 is an a.p. Is the following ...
- math - Can someone please help me on these I have look at the examples and done ...
- Math - Does studying for an exam pay off? The number of hours studied, x, is ...
- Precalculus - Solve (log x)^2 = log x Also, when will their be a possibility ...
- Chemistry - Need help solving this problem. A 0.188g sample of unknown metal, X...
- precalculus - My book tells me to solve each exponential equation. I am given a...