Use a program like Mathematica to solve (7.5.10) for (k). Setting c = 1 and () = 1, plot both branches of (k) for various

Use a program like Mathematica to solve (7.5.10) for ω(k). Setting c = 1 and ϵ(∞) = 1, plot both branches of ω(k) for various values of the splitting ω²_L−ω²_T , and show that in the limit of zero splitting there is one single photon branch with ω = ck.

6 = ck (00)/60 (w - w w-w w2 (7.5.10)