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College Algebra, Jay Abramson

Precalculus, Jay Abramson

Calculus: Volume 1, Gilbert Strang and Edwin Herman

Calculus: Volume 2, Gilbert Strang and Edwin Herman

Calculus: Volume 3, Gilbert Strang and Edwin Herman

Elementary Differential Equations, William F. Trench

A First Course in Linear Algebra, Robert A. Beezer