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Subscripted assignment dimension mismatch.

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sihem bk
sihem bk 2018-11-4
关闭： MATLAB Answer Bot 2021-8-20
i'm trying to write this system:
a=1.07;
b=0.3;
k=2;
x1=[];
x2=[];
x3=[];
x=[];
f(x)=[1-a*((x1)^2)*(k) ; 0 ;0 ];
A=[0 1 0;0.3 0 1;-0.3 0 0];
x=[x1 ; x2 ; x3 ];
k=lenght(x);
x(k+1)= Ax(k)+f(x(k));
figure;
plot(x,k)

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回答（1 个）

Caglar
Caglar 2018-11-4
First of all, f(x) is wrong.
x=[];
f(x)=[1-a*((x1)^2)*(k) ; 0 ;0 ];
x is empty, how can it be an indice? And then, your calculation (right hand side) yields 2-d data. Left side must comply.
x=[1];
f(x,:)=[1-a*((x1)^2)*(k) ; 0 ;0 ];
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Caglar
Caglar 2018-11-4
can you write what is your final goal? As @star strider said its not clear.
sihem bk
sihem bk 2018-11-4
编辑：sihem bk 2018-11-4
mmy goal is to plot this :
and i'm starting from this

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