Express as a product.
\[
\log y^{4}
\]
Final Answer: \(\boxed{4 \log y}\)
Step 1 :Express the logarithm of a power as a product. This is a property of logarithms. So, we can rewrite \(\log y^{4}\) as \(4 \log y\).
Step 2 :Final Answer: \(\boxed{4 \log y}\)