SOLUTION: e^-x=3

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Question 269924: e^-x=3
Found 2 solutions by drk, ankor@dixie-net.com:
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
Step 1 - take a LN of both sides to get
ln%28e%5E%28-x%29%29+=+ln%283%29
the ln and e cancel so we get
-x+=+ln%283%29
divide by -1 to get
x+=+-ln%283%29

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
e^-x = 3
ln(e^-x) = ln(3)
-x*ln(e) = 1.0986
:
ln of e is 1, therefore
-x = 1.0986
x = -1.0986
:
:
Check on a calc: enter e^(-(-1.0986))= 2.9999 ~ 3