On this webpage you will find my solutions to the third edition of "Introduction to Quantum Mechanics" by David J. Griffiths. Here is a link to the book's page on amazon.com. If you find my work useful, please consider making a donation. Thank you.

Chapter 1: The Wave Function
Problem 1.1 Problem 1.5 Problem 1.9 Problem 1.13 Problem 1.17
Problem 1.2 Problem 1.6 Problem 1.10 Problem 1.14 Problem 1.18
Problem 1.3 Problem 1.7 Problem 1.11 Problem 1.15
Problem 1.4 Problem 1.8 Problem 1.12 Problem 1.16
Chapter 2: Time-Independent Schrödinger Equation
Problem 2.1 Problem 2.15 Problem 2.29 Problem 2.43 Problem 2.57
Problem 2.2 Problem 2.16 Problem 2.30 Problem 2.44 Problem 2.58
Problem 2.3 Problem 2.17 Problem 2.31 Problem 2.45 Problem 2.59
Problem 2.4 Problem 2.18 Problem 2.32 Problem 2.46 Problem 2.60
Problem 2.5 Problem 2.19 Problem 2.33 Problem 2.47 Problem 2.61
Problem 2.6 Problem 2.20 Problem 2.34 Problem 2.48 Problem 2.62
Problem 2.7 Problem 2.21 Problem 2.35 Problem 2.49 Problem 2.63
Problem 2.8 Problem 2.22 Problem 2.36 Problem 2.50 Problem 2.64
Problem 2.9 Problem 2.23 Problem 2.37 Problem 2.51
Problem 2.10 Problem 2.24 Problem 2.38 Problem 2.52
Problem 2.11 Problem 2.25 Problem 2.39 Problem 2.53
Problem 2.12 Problem 2.26 Problem 2.40 Problem 2.54
Problem 2.13 Problem 2.27 Problem 2.41 Problem 2.55 Bound State Simulation
Problem 2.14 Problem 2.28 Problem 2.42 Problem 2.56 Scattering State Simulation
Appendix: Linear Algebra
Problem A.1 Problem 8 | Solution Problem 15 | Solution Problem 22 | Solution Problem 29 | Solution
Problem A.2 Problem 9 | Solution Problem 16 | Solution Problem 23 | Solution Problem 30 | Solution
Problem A.3 Problem 10 | Solution Problem 17 | Solution Problem 24 | Solution Problem 31 | Solution
Problem A.4 Problem 11 | Solution Problem 18 | Solution Problem 25 | Solution
Problem A.5 Problem 12 | Solution Problem 19 | Solution Problem 26 | Solution
Problem A.6 Problem 13 | Solution Problem 20 | Solution Problem 27 | Solution
Problem A.7 Problem 14 | Solution Problem 21 | Solution Problem 28 | Solution
Chapter 3: Formalism
Problem 1 | Solution Problem 11 | Solution Problem 21 | Solution Problem 31 | Solution Problem 41 | Solution
Problem 2 | Solution Problem 12 | Solution Problem 22 | Solution Problem 32 | Solution Problem 42 | Solution
Problem 3 | Solution Problem 13 | Solution Problem 23 | Solution Problem 33 | Solution Problem 43 | Solution
Problem 4 | Solution Problem 14 | Solution Problem 24 | Solution Problem 34 | Solution Problem 44 | Solution
Problem 5 | Solution Problem 15 | Solution Problem 25 | Solution Problem 35 | Solution Problem 45 | Solution
Problem 6 | Solution Problem 16 | Solution Problem 26 | Solution Problem 36 | Solution Problem 46 | Solution
Problem 7 | Solution Problem 17 | Solution Problem 27 | Solution Problem 37 | Solution Problem 47 | Solution
Problem 8 | Solution Problem 18 | Solution Problem 28 | Solution Problem 38 | Solution Problem 48 | Solution
Problem 9 | Solution Problem 19 | Solution Problem 29 | Solution Problem 39 | Solution Problem 49 | Solution
Problem 10 | Solution Problem 20 | Solution Problem 30 | Solution Problem 40 | Solution
Chapter 4: Quantum Mechanics in Three Dimensions
Problem 1 | Solution Problem 17 | Solution Problem 33 | Solution Problem 49 | Solution Problem 65 | Solution
Problem 2 | Solution Problem 18 | Solution Problem 34 | Solution Problem 50 | Solution Problem 66 | Solution
Problem 3 | Solution Problem 19 | Solution Problem 35 | Solution Problem 51 | Solution Problem 67 | Solution
Problem 4 | Solution Problem 20 | Solution Problem 36 | Solution Problem 52 | Solution Problem 68 | Solution
Problem 5 | Solution Problem 21 | Solution Problem 37 | Solution Problem 53 | Solution Problem 69 | Solution
Problem 6 | Solution Problem 22 | Solution Problem 38 | Solution Problem 54 | Solution Problem 70 | Solution
Problem 7 | Solution Problem 23 | Solution Problem 39 | Solution Problem 55 | Solution Problem 71 | Solution
Problem 8 | Solution Problem 24 | Solution Problem 40 | Solution Problem 56 | Solution Problem 72 | Solution
Problem 9 | Solution Problem 25 | Solution Problem 41 | Solution Problem 57 | Solution Problem 73 | Solution
Problem 10 | Solution Problem 26 | Solution Problem 42 | Solution Problem 58 | Solution Problem 74 | Solution
Problem 11 | Solution Problem 27 | Solution Problem 43 | Solution Problem 59 | Solution Problem 75 | Solution
Problem 12 | Solution Problem 28 | Solution Problem 44 | Solution Problem 60 | Solution Problem 76 | Solution
Problem 13 | Solution Problem 29 | Solution Problem 45 | Solution Problem 61 | Solution
Problem 14 | Solution Problem 30 | Solution Problem 46 | Solution Problem 62 | Solution
Problem 15 | Solution Problem 31 | Solution Problem 47 | Solution Problem 63 | Solution
Problem 16 | Solution Problem 32 | Solution Problem 48 | Solution Problem 64 | Solution
Chapter 5: Identical Particles
Problem 1 | Solution Problem 9 | Solution Problem 17 | Solution Problem 25 | Solution Problem 33 | Solution
Problem 2 | Solution Problem 10 | Solution Problem 18 | Solution Problem 26 | Solution Problem 34 | Solution
Problem 3 | Solution Problem 11 | Solution Problem 19 | Solution Problem 27 | Solution Problem 35 | Solution
Problem 4 | Solution Problem 12 | Solution Problem 20 | Solution Problem 28 | Solution Problem 36 | Solution
Problem 5 | Solution Problem 13 | Solution Problem 21 | Solution Problem 29 | Solution Problem 37 | Solution
Problem 6 | Solution Problem 14 | Solution Problem 22 | Solution Problem 30 | Solution Problem 38 | Solution
Problem 7 | Solution Problem 15 | Solution Problem 23 | Solution Problem 31 | Solution Problem 39 | Solution
Problem 8 | Solution Problem 16 | Solution Problem 24 | Solution Problem 32 | Solution
Chapter 6: Symmetries & Conservation Laws
Problem 1 | Solution Problem 9 | Solution Problem 17 | Solution Problem 25 | Solution Problem 33 | Solution
Problem 2 | Solution Problem 10 | Solution Problem 18 | Solution Problem 26 | Solution Problem 34 | Solution
Problem 3 | Solution Problem 11 | Solution Problem 19 | Solution Problem 27 | Solution Problem 35 | Solution
Problem 4 | Solution Problem 12 | Solution Problem 20 | Solution Problem 28 | Solution Problem 36 | Solution
Problem 5 | Solution Problem 13 | Solution Problem 21 | Solution Problem 29 | Solution Problem 37 | Solution
Problem 6 | Solution Problem 14 | Solution Problem 22 | Solution Problem 30 | Solution
Problem 7 | Solution Problem 15 | Solution Problem 23 | Solution Problem 31 | Solution
Problem 8 | Solution Problem 16 | Solution Problem 24 | Solution Problem 32 | Solution
Chapter 7: Time-Independent Perturbation Theory
Problem 1 | Solution Problem 13 | Solution Problem 25 | Solution Problem 37 | Solution Problem 49 | Solution
Problem 2 | Solution Problem 14 | Solution Problem 26 | Solution Problem 38 | Solution Problem 50 | Solution
Problem 3 | Solution Problem 15 | Solution Problem 27 | Solution Problem 39 | Solution Problem 51 | Solution
Problem 4 | Solution Problem 16 | Solution Problem 28 | Solution Problem 40 | Solution Problem 52 | Solution
Problem 5 | Solution Problem 17 | Solution Problem 29 | Solution Problem 41 | Solution Problem 53 | Solution
Problem 6 | Solution Problem 18 | Solution Problem 30 | Solution Problem 42 | Solution Problem 54 | Solution
Problem 7 | Solution Problem 19 | Solution Problem 31 | Solution Problem 43 | Solution Problem 55 | Solution
Problem 8 | Solution Problem 20 | Solution Problem 32 | Solution Problem 44 | Solution Problem 56 | Solution
Problem 9 | Solution Problem 21 | Solution Problem 33 | Solution Problem 45 | Solution Problem 57 | Solution
Problem 10 | Solution Problem 22 | Solution Problem 34 | Solution Problem 46 | Solution
Problem 11 | Solution Problem 23 | Solution Problem 35 | Solution Problem 47 | Solution
Problem 12 | Solution Problem 24 | Solution Problem 36 | Solution Problem 48 | Solution
Chapter 8: The Variational Principle
Problem 1 | Solution Problem 7 | Solution Problem 13 | Solution Problem 19 | Solution Problem 25 | Solution
Problem 2 | Solution Problem 8 | Solution Problem 14 | Solution Problem 20 | Solution Problem 26 | Solution
Problem 3 | Solution Problem 9 | Solution Problem 15 | Solution Problem 21 | Solution Problem 27 | Solution
Problem 4 | Solution Problem 10 | Solution Problem 16 | Solution Problem 22 | Solution Problem 28 | Solution
Problem 5 | Solution Problem 11 | Solution Problem 17 | Solution Problem 23 | Solution Problem 29 | Solution
Problem 6 | Solution Problem 12 | Solution Problem 18 | Solution Problem 24 | Solution Problem 30 | Solution
Chapter 9: The WKB Approximation
Problem 1 | Solution Problem 5 | Solution Problem 9 | Solution Problem 13 | Solution Problem 17 | Solution
Problem 2 | Solution Problem 6 | Solution Problem 10 | Solution Problem 14 | Solution Problem 18 | Solution
Problem 3 | Solution Problem 7 | Solution Problem 11 | Solution Problem 15 | Solution Problem 19 | Solution
Problem 4 | Solution Problem 8 | Solution Problem 12 | Solution Problem 16 | Solution Problem 20 | Solution
Chapter 10: Scattering
Problem 1 | Solution Problem 6 | Solution Problem 11 | Solution Problem 16 | Solution Problem 21 | Solution
Problem 2 | Solution Problem 7 | Solution Problem 12 | Solution Problem 17 | Solution Problem 22 | Solution
Problem 3 | Solution Problem 8 | Solution Problem 13 | Solution Problem 18 | Solution Problem 23 | Solution
Problem 4 | Solution Problem 9 | Solution Problem 14 | Solution Problem 19 | Solution
Problem 5 | Solution Problem 10 | Solution Problem 15 | Solution Problem 20 | Solution
Chapter 11: Quantum Dynamics
Problem 1 | Solution Problem 9 | Solution Problem 17 | Solution Problem 25 | Solution Problem 33 | Solution
Problem 2 | Solution Problem 10 | Solution Problem 18 | Solution Problem 26 | Solution Problem 34 | Solution
Problem 3 | Solution Problem 11 | Solution Problem 19 | Solution Problem 27 | Solution Problem 35 | Solution
Problem 4 | Solution Problem 12 | Solution Problem 20 | Solution Problem 28 | Solution Problem 36 | Solution
Problem 5 | Solution Problem 13 | Solution Problem 21 | Solution Problem 29 | Solution Problem 37 | Solution
Problem 6 | Solution Problem 14 | Solution Problem 22 | Solution Problem 30 | Solution Problem 38 | Solution
Problem 7 | Solution Problem 15 | Solution Problem 23 | Solution Problem 31 | Solution Problem 39 | Solution
Problem 8 | Solution Problem 16 | Solution Problem 24 | Solution Problem 32 | Solution
Chapter 12: Afterword
Problem 1 | Solution Problem 3 | Solution Problem 5 | Solution Problem 7 | Solution
Problem 2 | Solution Problem 4 | Solution Problem 6 | Solution Problem 8 | Solution