how to solve inequality in matlab R2016a

I am trying to get the answer for the following inequality equation: (x-1)*(x-2)*(x-3)*(x-4)>0. Here is the code that I have used:

syms x

eqn = (x-1)*(x-2)*(x-3)*(x-4)> 0;

S = solve(eqn, x)

But I am getting the answer as:

S =

Empty sym: 0-by-1

Please somebody help me to get the answer in a proper manner.

I am using MATLAB R2016a

Answer 1

[Stephan]

In 2019b this works by using an assumption:

syms x real
eqn = (x-1)*(x-2)*(x-3)*(x-4)> 0;
S = solve(eqn, x)

% Test solutions
fun = @(x) (x-1).*(x-2).*(x-3).*(x-4);
res = fun(double(S))

I would expect this to work in 2016a also. Result is:

S =
 
      5
      0
 exp(1)
 

res =

   24.0000
   24.0000
    0.4457

[Safdhan]

Thank you very much. It helped me