Precalculus mathematics; a functional approach James F. Connelly [and] Robert A. Fratangelo. Connelly, James Francis, 1937- Fratangelo, Robert A., joint author. Mathematics. Precalculus. QA39.2 .C66 512.1 COP New York, Macmillan 1975. 1975. 1975 Text ix, 431 p. : eng