relaxvalue is used to extract the relaxed numerical value of an expression after solving a relaxation.

```
Y = relaxvalue(X)
```

Consider the following trivial relaxed problem

```
sdpvar x
Model = [[2 3] <= [x x^2]];
Objective = x + x^2
optimize(Model,Objective,sdpsettings('relax',1))
```

The variable \(x\) and the relaxed variable of \(x^2\) which will be independent in the problem will have values 2 and 3 at the optimum.

```
value(x)
ans =
2.0000
value(x^2)
ans =
4.0000
relaxvalue(x^2)
ans =
3.0000
```