You can access previews or digital versions through major academic libraries and platforms:
Leo smiled and reopened the PDF.
One night, stuck on a problem about Chebyshev polynomials, Leo realized the trick wasn’t in the algebra—it was in the geometry . The polynomials minimized the maximum absolute value on [-1,1]. They oscillated like waves. He laughed out loud. Barbeau had hidden a sine curve inside an integer sequence. polynomials by barbeau pdf
Polynomials: A Problem Book by Edward J. Barbeau is a classic in the Problem Books in Mathematics You can access previews or digital versions through