无穷小与无穷大Infinitely Small and Infinitely Great

第四节 无穷小与无穷大(Infinitely Small and Infinitely Great)教学目的：理解无穷小量和无穷大量的概念，掌握无穷小量、无穷大量之间的关系，掌握它们的性质及无穷小的比