i got an error as Error in memristor2 (line 29) q(i)=Qo*Ro​(1-sqrt(1-​(2*n*(Roff​-Ron)*flux​(i)))/(Qo*​Ro*Ro))/(n​*(Roff-Ron​));

i got an error as Error in vet(line 29) Subscript indices must either be real positive integers or logicals

q(i)=Qo*Ro(1-sqrt(1-(2*n*(Roff-Ron)*flux(i)))/(Qo*Ro*Ro))/(n*(Roff-Ron));

This is my code Which is given below,

mr=10^-10;
Ron=100;
Roff=16000;
D=10^-9;
f=1;
T=1/f;
n=1;
w=.01*D;
Qo=(D^2)/(mr*Ron);
Ro=Ron*(w/D)+Roff*(1-w/D);
dt=0.001;
i=1;

for t=0:dt:1

I(i)=10e-3*(sin(2*pi*f*t));

flux(i)=(1-cos(w*t)/(w));

M(i)=Ro*sqrt(1-(2*n*(Roff-Ron)*flux(i))/(Qo*Ro*Ro));

q(i)=Qo*Ro(1-sqrt(1-(2*n*(Roff-Ron)*flux(i)))/(Qo*Ro*Ro))/(n*(Roff-Ron));

w(i+1)=w(i)-mr*Ron*q(i)./D;

v(i)=M(i)*I(i);

i=i+1;

end

Can anyone help me to overcome this error.Thanks in advance.