Luciano Battaia, Giacomo Bormetti, Giulia Livieri
          Precalculus
          A Prelude to Calculus with Exercises
          Notes for a crash-course in Mathematics, Università di Bologna,
          Corso di Laurea in Economia e Commercio, Curriculum Management - Forlì
        Precalculus
        A Prelude to Calculus with Exercises
        Luciano Battaia, Giacomo Bormetti, Giulia Livieri
        Version 1.0 of November 13, 2019
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         The power of mathematics is often to change one thing into another, to change geometry into language.
                                             Marcus du Sautoy