SOLUTION: how do I find the answer to Log(base 1/2)4?

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Question 362034: how do I find the answer to Log(base 1/2)4?
Found 2 solutions by Fombitz, Alan3354:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
y=log%281%2F2%2C%284%29%29
By definition,
%281%2F2%29%5Ey=4
%282%5E%28-1%29%29%5Ey=2%5E2
2%5E%28-y%29=2%5E2
highlight%28y=-2%29

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
You can always use the base change:
= log(4)/log(1/2)
= -2