changes.mady.by.user Arthur Aslanyan (Nafta College)
Saved on Jan 22, 2022
R_v = \exp \big [ 3.684 + 0.61967 \cdot Z + 0.015359 \cdot Z^2 \big ]
Z = \sum_{n=01}^4 \, Z_n
Z_n = C_{n0} + C_{n1} \cdot {\rm VAR}_n + C_{n2} \cdot {\rm VAR}_n^2 + C_{n3} \cdot {\rm VAR}_n^3 + C_{n4} \cdot {\rm VAR}_n^4
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