Solve the following? #log_3 81=-1#.

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Answer 1 · 2018-06-07T20:43:25

#log_3 81 = 4#

#3*3*3*3 = 81#

Answer 2 · 2018-06-07T20:47:27

#4!=-1#

We can rewrite the left hand side as being equal to

#log_3(3^4)=-1#

The base-#3#s will cancel, and we're left with

#4=-1#

Which is obviously not true. We can say

#4!=-1#

Hope this helps!