Wednesday

October 1, 2014

October 1, 2014

Posted by **George** on Thursday, January 24, 2013 at 3:54pm.

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 4:18pmYou must be talking about this post, which Steve answered.

http://www.jiskha.com/display.cgi?id=1358971066

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**

**Related Questions**

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 ...

Chemistry - Need help solving this problem. A 0.188g sample of unknown metal, X...

math help - Use the following table to answer the questions. (Give your answers ...

physics - Vector V1 is 8.58 units long and points along the -x axis. Vector V2 ...

Math - FredR - I asked about radians yesterday,you told me that a circle has 360...

Math - Does studying for an exam pay off? The number of hours studied, x, is ...

Math PLEASE help - Does studying for an exam pay off? The number of hours ...

calculus - Maximize p = 2x + 2y subject to 4x + 8y 24 8x + 4y 32 x 0 , y 0 (...

Statistics - Does studying for an exam pay off? The number of hours studied, x, ...