 $$\begin{aligned} -\frac{w_{0+0}}0\dot R-\frac{\mu_{0-0}}0 \dot X&=&-\left[-0 \tilde a_0-w_{0+0}R-\frac{\mu_{0-0}}0 X\right]u\nonumber\\ && +\left[0\tilde\sigma_0-\frac{\mu_{0-0}}0 R+w_{0+0}X\right]x\nonumber\\ &&+w_{0-0}[0X-00(H-u)x]x