this Dry season i really have planned to have a short refresher course in solving differential equations of "hypergeometric" types, methods of which i have used in solving the differential equation in this exercise but i don't have that much vacant time this season
https://foxtrotpaparomeo.wordpress.com/2022/11/08/the-klein-gordon-field-in-two-dimensional-rindler-space-time-8november2022/