User:Co0lDuUde/sandbox

$$\biggl(\int_{-R}^{R} \frac{1}{\sqrt[d\lambda]{x/\lambda}+\sqrt[d\lambda]{y/f(\lambda)}}\biggl)^{d\lambda} = R(x,y)$$

$$\int_{-R}^{R} \frac{1}{\sqrt[d\lambda]{x/\lambda}+\sqrt[d\lambda]{f(x)/f(\lambda)}} = R(x,f(x))$$

$$\biggl(\int_{-R}^{R} \frac{1}{\sqrt[d\lambda]{x/\lambda}+\sqrt[d\lambda]{f(x)/f(\lambda)}}\biggr)^{d\lambda} = R(x,f(x))$$

$$f(x) = \lim_{\Delta \to 0} \sqrt[\Delta]{x}$$

$$ f(x) = \sqrt[d\Delta]{x} $$

$$\lim_{\Delta x \to 0} \sum_{t=1}^{x/\Delta x} \frac{1}{t\Delta x}\Delta x$$