loga X = C and logb X = D
i got it up to log ab X = (cd)/(c+d)
the question asked what the scope and/or limitations are. I know that ab and X can't be negatives but i dont know the rest
Hello, Bzaher!
The scope and limitations of what?$\displaystyle \log_a X \,=\, c,\;\;\log_b X \,=\, d$
i got it up to: .$\displaystyle \log_{ab} X \:=\:\frac{cd}{c+d}$
The question asked what the scope and/or limitations are.
Here are the restrictions: .$\displaystyle \begin{Bmatrix}X \:>\:0 \\
a \,>\,0,\;a\,\neq\,1 \\ b\,>\,0,\;b\,\neq\,1 \\ c+d\,\neq\,0\end{Bmatrix}$