Solution:
Let y=log3x. Then x=3y.
We compute the inner logarithms:
- log3x=y
- log27x=log327log3x=3y
- log33x=log333log3x=1/3y=3y
Now substitute into the equation:
log33(log3x)+log3(log27x)+log27(log33x)=1
That is:
log33(y)+log3(3y)+log27(3y)=1
Compute each term:
1. log33(y)=log333log3y=1/3log3y=3log3y
2. log3(3y)=log3y−log33=log3y−1
3. log27(3y)=log327log3(3y)=3log33+log3y=31+log3y
Sum:
3log3y+(log3y−1)+31+log3y=1
Combine like terms:
3log3y+log3y+3log3y=1+1−31
But let's be careful:
3log3y+log3y=4log3y
So:
4log3y+3log3y−1+31=1
(4+31)log3y−1+31=1
313log3y−32=1
313log3y=1+32=35
log3y=135
Recall y=log3x, so log3y=log3(log3x).
Therefore,
135