Solutions for Quantum Mechanics and Path Integrals, by Richard P. Feynman and Albert R. Hibbs, emended by Daniel F. Styer.

Problem 2-1 ▹Demo (Action for free particle)
Problem 2-2 ▹Demo (Action for harmonic oscillator)
Problem 2-3 ▹Demo (Action for constant force)
Problem 2-4
Problem 2-5
Problem 2-6

Problem 3-1
Problem 3-2 ▹Demo
Problem 3-3
Problem 3-4 ▹Demo (Evolution of free particle wave function)
Problem 3-5 ▹Demo (Schrodinger equation for free particle)
Problem 3-6
Problem 3-7 ▹Demo
Problem 3-8 (Kernel for harmonic oscillator)
Problem 3-9 ▹Demo (Kernel for constant force)
Problem 3-10
Problem 3-11
Problem 3-12 ▹Demo (Evolution of harmonic oscillator wave function)
Problem 3-13

Problem 4-1 ▹Demo (Schrodinger equation for scalar potential)
Problem 4-2 ▹Demo (Schrodinger equation for charged particle)
Problem 4-3 ▹Demo
Problem 4-4 ▹Demo
Problem 4-5
Problem 4-6
Problem 4-7
Problem 4-8
Problem 4-9
Problem 4-10
Problem 4-11
Problem 4-12 ▹Demo (Fun integral)

Problem 5-1
Problem 5-2
Problem 5-3
Problem 5-4
Problem 5-5
Problem 5-6
Problem 5-7
Problem 5-8
Problem 5-9
Problem 5-10
Problem 5-11
Problem 5-12
Problem 5-13

Problem 6-1
Problem 6-2
Problem 6-3
Problem 6-4
Problem 6-5 ▹Demo
Problem 6-6
Problem 6-7
Problem 6-8
Problem 6-9
Problem 6-10
Problem 6-11
Problem 6-12
Problem 6-13 ▹Demo (Method of stationary phase)
Problem 6-14
Problem 6-15
Problem 6-16
Problem 6-17
Problem 6-18
Problem 6-19
Problem 6-20
Problem 6-21
Problem 6-22
Problem 6-23
Problem 6-24
Problem 6-25
Problem 6-26
Problem 6-27
Problem 6-28
Problem 6-29

Problem 7-1
Problem 7-2
Problem 7-3
Problem 7-4
Problem 7-5
Problem 7-6
Problem 7-7
Problem 7-8
Problem 7-9
Problem 7-10
Problem 7-11
Problem 7-12
Problem 7-13
Problem 7-14
Problem 7-15
Problem 7-16
Problem 7-17

Problem 8-1
Problem 8-2
Problem 8-3
Problem 8-4
Problem 8-5
Problem 8-6
Problem 8-7

Problem 9-1
Problem 9-2
Problem 9-3
Problem 9-4
Problem 9-5
Problem 9-6
Problem 9-7
Problem 9-8
Problem 9-9
Problem 9-10
Problem 9-11
Problem 9-12

Problem 10-1
Problem 10-2
Problem 10-3
Problem 10-4
Problem 10-5
Problem 10-6
Problem 10-7
Problem 10-8
Problem 10-9
Problem 10-10

Problem 12-1
Problem 12-2
Problem 12-3