1. The problem statement, all variables and given/known data I want to cook a 4" meatball. The meatball is being stored in the fridge at 35 degrees F. The meatball will go into a convection oven at 350 degrees F (surface is maintained at precisely 350 for the duration of cooking). I want to cook the meatball to 130 degrees F (in the center). 2. Relevant equations LaPlacian = 0? 3. The attempt at a solution How do I set it up and start the separation of variables?