Continuing from the previous problem, using the finite matrix method with a 2 x 2 matrix, calculate the new energy eigenvalue for the lowest energy eigenstate, in meV relative to the (fixed) bottom center energy of this box, in this structure at a field of 10 V/micron (Note: you will have to find the eigenvalues of this matrix, or at least the smaller of the two of them). Give your answers correct to three significant figures.