Question

I need help with this problem

Answer 1

We have,

`\begin{gathered} e^(\ln x)=x \\ \log _ex=\ln x \end{gathered}`

The given expression is,

`\ln 5x=4`

This can be written as,

`\begin{gathered} \ln 5x=4 \\ \log _e5x=4 \\ e^4=5x \end{gathered}`