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Why the following code does not give me the 3D plot. Please someone help me out.

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Z. A
Z. A 2021-9-26
编辑： Chunru 2021-9-26
clc;clear;close all;
syms Lambda beta1
delta=-2.9994;
beta2=0.732932;
rho1=-0.187641;
rho2=0.187641;
gama1=-0.254351;
gama2=-0.553853;
delta1=-0.0127175;
delta2=-0.179079;
R0=Lambda*((beta1.*gama2.*rho1+beta2.*gama1.*rho2)+(beta1.*delta2.*rho1+beta2.*delta1.*rho2))./delta.*((rho1+rho2).*(gama1+delta1).*(gama2+delta2));
ezmesh(R0,[0,1],100)
colormap parula

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回答（1 个）

Chunru
Chunru 2021-9-26
编辑：Chunru 2021-9-26
In your definition of R0, there is a term rho1+rho2, which happen to be 0. So R0 is just 0. Check your formula first.

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