Question

${y \frac{ \leqslant \geqslant}{?} \times \frac{?}{?} }^{2}$
​

Answer 1

Answer:

eft. \begin{array}{c}

   \frac{NR}{K}=50\\

   0<R\leqslant 35\\

   NR\geqslant 65\\

   N>0\\

   K=24\\

   NR\geqslant \text{600 }\left( an\,\,initial\,\,guess \right)\\

\end{array} \right\} \Rightarrow \left\{ \begin{array}{c}

   K_{\min}=24\\

   N_{\min}=40\\

   R_{\max}=30\\

\end{array} \right.  

\\

\left. \begin{array}{c}

   R_U=\frac{NR}{I}\\

   R_D=\frac{NR}{J}\\

   K=I+J\\

\end{array} \right\} \Rightarrow \left\{ \begin{array}{c}

   I=K-K\alpha =24-24\cdot \frac{1}{4}=18\\

   J=K\alpha =2