Exercise 1.1 demo Derive Snell's law

Exercise 1.2

Exercise 1.3

Exercise 1.4

Exercise 1.5

Exercise 1.6

Exercise 2.1

Exercise 2.2 Perturbation example

Exercise 2.4

Exercise 3.1

Exercise 3.2

Exercise 5.1 Total time derivative, Euler-Lagrange equation

Exercise 5.2

Exercise 5.3

Exercise 5.4

Exercise 7.1 Equation of motion from Lagrangian

Exercise 7.2

Exercise 8.1

Exercise 8.2

Exercise 9.1

Exercise 10.1

Exercise 10.3

Exercise 11.1

Exercise 12.1

Exercise 13.1 demo Levi-Civita symbol; scalars commute with operators

Exercise 13.4 demo

Exercise 14.2

Exercise 16.1 demo Propagator for particle in a box

Exercise 36.1 demo

Exercise 37.1

Exercise 37.2 demo

Exercise 37.3 Derive Dirac equation from boost