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plot common region which corresponds to some negative value

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Hamza Makhamreh
Hamza Makhamreh 2018-10-30
关闭： MATLAB Answer Bot 2021-8-20
Dear friends, I am trying to plot the region (on z1-z2 plane) which corresponds to C1 least negative and C2 least negative. If there is no negative values in the C2 vector, then choose the points for which C2==0.
Where
C1= z1*(15*a1 + 5*a2 +a2*z2 – v1);
C2= z2*a2(v2 + z1);
k=1:800; Ts=25e-6
v1=100*sin(100*pi*Ts*k );
v2=10* sin(100*pi*Ts*k );
The values of z1 and z2 spread over the x-y plane. They can be any real value. We havefour possible inputs as follow:
a1 a2
0 0
0 1
1 0
1 1
I expecting to see the common region which corresponds to all negative values of the two functions.
Thanks in advance

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