Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

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syms X;
n = length(a) ;
for i=1:n
Tdet1(i) = sqrt(2*a(i)/D(i)*h(i));
FZ(i) = 1-((Tdet1(i).*((cn.*Y(i))+h(i)))./(B(i))); %((cn.*Y(i).+h(i)).*(Tdet(i)./B(i))) ; % Acumulado
alfa(i) = 1-FZ(i) ; % Nivel de Servicio con Tdet
Z(i) = (norminv(1-alfa(i)/2)) ;
fz(i) = normpdf(Z(i)) ; %%abs(0.5-alfa(i)) ; % Función de densidad normal con Z(Tdet)
Tdet(i) = solve ((-a(i)/X^2)+((D*h(i))/2)+ ...
((Z(i)*sg(i))/(2*sqrt(X+L(i))))+ ...
(sg(i)*fz(i))*((((-B(i))*X^2)- ...
(2*X*B(i)*L(i)))/((2*X^3)*sqrt(X+L(i))))- ...
((sg(i)*Z(i))*(((2*L(i)-X)*(((X)*(cn(i)))*Y(i))+ ...
((X)*h(i))))/(2*sqrt(X+L(i))))+((((cn(i))*Y(i))*sqrt(X+L(i)))/X))== 0,X;

Answers (1)

Bhavana Ravirala
Bhavana Ravirala on 15 Feb 2022
Hi Yineth,
From my understanding, at every iteration the code produces more than one solution for X. So, storing the output in a cell array will eliminate this error.
Tdet{i} = solve ((-a(i)/X^2)+((D*h(i))/2)+ ...
((Z(i)*sg(i))/(2*sqrt(X+L(i))))+ ...
(sg(i)*fz(i))*((((-B(i))*X^2)- ...
(2*X*B(i)*L(i)))/((2*X^3)*sqrt(X+L(i))))- ...
((sg(i)*Z(i))*(((2*L(i)-X)*(((X)*(cn(i)))*Y(i))+ ...
((X)*h(i))))/(2*sqrt(X+L(i))))+((((cn(i))*Y(i))*sqrt(X+L(i)))/X))== 0,X;
Hope this helps.

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