$$
\varepsilon=\frac{-\frac{d\left(\frac{L}{K}\right)}{\frac{L}{k}}}{\frac{d\left(\frac{n}{R}\right)}{\left(\frac{w}{R}\right)}}=-\frac{d \lg \left(\frac{L}{R}\right)}{d \log \left(\frac{w}{R}\right)}……..②
$$2
$$
\varepsilon=\frac{-\frac{d\left(\frac{L}{K}\right)}{\frac{L}{k}}}{\frac{d\left(\frac{n}{R}\right)}{\left(\frac{w}{R}\right)}}=-\frac{d \lg \left(\frac{L}{R}\right)}{d \log \left(\frac{w}{R}\right)}……..②
$$2