Hi guys, recently, I am planning my college studies plan, majoring in Physics. I would love to have a solid math background for my physics studies. I am recently reading Apostol's calculus I. And I found that actually Apostol's calculus I&II covers linear algebra and ODE, so my question is: 1.) did Apostol do a good job at explaining LA & DE as well? 2.) Is Apostol's ODE in his Calculus II enough for me to read Griffiths's book on QM? any other suggestions are welcomed =) thanks for reading!