MATLAB: Please help to rectify an error……(Error in while loop)

MATLABwhile loop

b=5; x1=0; x2=0.5; x3=1; dx=0.5; % Initial values
syms x
f=inline('(x^2)+(54/x)'); % Function
while x3<=b                     %Conditions

if f(x1)>=f(x2) && f(x2)<=f(x3) %Conditions
disp('minima lies between x1 and x3')
else 
x1=x2; x2=x3; x3=x2+dx; % Modified values of x1 x2 & x3 if above condition is not satisfied. 
                        % from these values it should goto start point until conditions are satisfied 
end
end

Best Answer

You have not defined dx.
You are not using "x" so "syms x" is not needed.
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