### Evaluation and Visualization Module

The user should first input the parameter * μ* = [

*μ*

_{1},

*μ*

_{2}] such that

*in [1, 10] × [0.1, 100]. The user should also input a*

**μ***numerical parameter*that relates to the desired accuracy of the RB output prediction

*N*

_{pr}in [1, 36],

*N*

_{du}in [1, 32]: the error in our prediction decreases as

*N*increases.

The code then displays, for the
desired parameter value * μ* = [

*μ*

_{1},

*μ*

_{2}], (i) the contour of the field, and (ii) the value of the output/quantity of interest. In each case, we also provide a certificate of fidelity that rigorously bounds the error in our RB prediction relative to the highly accurate (and hence very expensive) "truth'' Finite Element solution.