- #1
the_awesome
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Homework Statement
It says to find the inverse of a function. I can figure out the answer of x by guessing, but its best to show a good way of working out :P also note that my calculator cannot do the log to a base part correctly.
All i want to know is if I've done it correctly. don't try to over complicate it for me :P I am pretty stupid and in grade 12 lol
Homework Equations
Find the inverse of:
66x-2 = 81
The Attempt at a Solution
66x-2 = 81
66y-2 = x + 81
6y-2 = log6(x+81)
6y = log6(x+81) + 2
y = log6(x+81) + 2 <<<<<<< this means all of this divided by 6
--------------------------
6
from recalling what someone said to me, they had a solution that was something like:
log6
--------------- +2
log81
_________________________________ <<<<< divide whole thing by 6
6
which is correct? is my attemp any good?