This is a contentious point among economics professors.
Pro-PDF Arguments:
Pro-Physical Book Arguments:
Verdict: If you are taking a graded "Math for Economists" course, buy the used paperback. If you just need to look up one specific theorem for a research paper, the PDF is fine. This is a contentious point among economics professors
For students moving into general equilibrium theory or macroeconomics, the latter sections are invaluable. Pro-Physical Book Arguments:
The search query "mathematics for economists by carl p. simon and lawrence blume pdf" is extremely common. It reflects two realities: the high cost of academic textbooks and the convenience of digital study. Verdict: If you are taking a graded "Math