http://webwork.math.ttu.edu/wwtmp/equations/14/5f265ee0094ee8860b7a0459bb80d21.png

Question

anonymous · Answer

i need both of the x values

anonymous · Answer

i keep evaluating this to be x= plus or minus e^3

anonymous · Answer

$$x^2=e^9$$ is a start

anonymous · Answer

or else you could write 
$$2\ln(x)=9$$
$$\ln(x)=\frac{9}{2}$$
$$x=e^{\frac{9}{2}}$$

anonymous · Answer

there should be 2 evaluations though?

anonymous · Answer

plus and minus sqrt ( e^9)

anonymous · Answer

yea thats not it either..

anonymous · Answer

because 
$$\sqrt{e^9}=e^{\frac{9}{2}}$$

anonymous · Answer

still that isn't correct I'm not sure why...

mertsj · Answer

how do you know it is not correct?

anonymous · Answer

because i am inputing that answer in my online homework and its not accepting it

mertsj · Answer

Did you put in 90?

mertsj · Answer

$$e ^{\frac{9}{2}}=90.0171313$$

mertsj · Answer

Sometimes it is a simple matter of the form of the answer in those online programs.

anonymous · Answer

i did actually i have tried several different answers and several different forms of the same answer

mertsj · Answer

How about e^4.5   Did you try that?

anonymous · Answer

haha yup

mertsj · Answer

Did you try + - e^4.5  ?

anonymous · Answer

yup, i really feel like it has to have something to do with the way we are evaluating it.

mertsj · Answer

Read the directions carefully.  Sometimes they have instructions about the order of the answers.  Maybe it has to be the negative one and then the positive one.

anonymous · Answer

ok i feel really retorted. apparently i wasn't putting x= haha thanks for all the help

mertsj · Answer

Thank goodness we got it solved!!