Second eigenvector for the mixed problem on the rectangle [0,ε]×[0,1/2] with ε ∈[(3/8)

Dirichlet condition on {0,ε}×[0,1/2], [0,ε]×{0} and [0,x(t)]×{1/2} and Neuman condition on [x(t),ε]×{1/2}.

We choose ε=(1-t/40)(3/8)

t=0 | ||

t=2 | ||

t=4 | ||

t=6 | ||

t=8 | ||

t=10 | ||

t=12 | ||

t=14 | ||

t=16 | ||

t=18 | ||

t=20 | ||

t=22 | ||

t=24 | ||

t=26 | ||

t=28 | ||

t=30 | ||

t=32 | ||

t=34 | ||

t=36 | ||

t=38 | ||

t=40 |