Most important for me is the result as I made this exercise and my result is different as given in the book.
Hello, achacy!
I have a somewhat intricate solution.
. . Maybe someone can do better . . .
.[1]
I converted the terms to the same base.
. . Take logs: .
. .
. . Hence: . .[2]
From the Base-Change Formula: . .[3]
Substitute [2] and [3] into [1]: .
We have: .
Let
Muliply by . . . assuming
Multiply by 2: .
There are two cases:
. .
. .
Then we have: .
Multiply by
Therefore: .