ln 1/e^3

I got -1 but Im not sure if that is correct?

Question

ln 1/e^3  

I got -1 but Im not sure if that is correct?

jtvatsim · Answer

almost, I think you are on the right track though... let me work it out first... :)

anonymous · Answer

okay

jtvatsim · Answer

alright, so first convert 1/e^3 to negative exponents, what did you get (or does that even make sense :) )?

anonymous · Answer

thats where I got the -1, bc if its a fraction it has to come from a neg number right?

jtvatsim · Answer

or wait, that exponent might be different that thinking...

anonymous · Answer

-3

anonymous · Answer

Charlie how did you get the answer?

anonymous · Answer

ln(e^-3), ln and e cancels each other

jtvatsim · Answer

is the question this or this?

$$\ln(\frac{1}{e^3})$$

$$[\ln(1/e)]^3$$

jtvatsim · Answer

right, I think charlie's got it :)

anonymous · Answer

the first

jtvatsim · Answer

ok, then yes, the conversion should be e^-3 because not only is it a fraction (-1) but it is also to the third power (3) so combining gives you -3

anonymous · Answer

so when I write it out I can write it like this?

anonymous · Answer

Yes, both ways

anonymous · Answer

|dw:1399444496427:dw|