SOLUTION: How do I find log(3)1/81 on a calculator. (3^x=1/81)

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Question 333657: How do I find log(3)1/81 on a calculator. (3^x=1/81)
Found 2 solutions by stanbon, jim_thompson5910:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How do I find log(3)1/81 on a calculator.
(3^x=1/81)
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3^x = 3^-4
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x = -4
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To find the answer with the calculator proceed as follows:
log3(1/81) = [log(1/81)]/[log(3)] = -4
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Cheers,
Stan H.

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
(the last figure is the result of rounding)


Alternatively, log%283%2C%281%2F81%29%29=ln%281%2F81%29%2Fln%283%29=-4.39444915467243%2F1.0986122886681=-4 (the last figure is the result of rounding)


Either way, log%283%2C%281%2F81%29%29=-4