Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. in column 20

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Advait Sinha 2019-6-25

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https://ww2.mathworks.cn/matlabcentral/answers/468823-incorrect-use-of-operator-to-assign-a-value-to-a-variable-use-to-compare-values-for-equal

评论： TADA 2019-6-25

close all;
dt = 0.464;%time step
u1=1;
u2=1;
k=0.12;
m=2.21;%initial parameters
v=1;
a=1.4;
tend=100;
t=0;
i=1
while t < tend-2*dt
    vh=v(i)-dt*k*(u1(i)-u2(i))/ (2*m);
 u1(i+1)-u2(1+1) = u1(i)-u2(i)+ dt*vh;
 a(i+1)= -k*u1(i+1)-u2(i)/2;
    v(i+1)= vh + dt*a(i+1)/2;
    i = i+1;
    t = t + dt
end
plot(linspace(0,tend,tend/dt),u1-u2);