The first encounter with university-level mathematics can be challenging, even for students who excelled in mathematics in high-school. In part this is because students arrive after a prolonged period away from academic study. But it is also because high-school mathematics is too often taught by rote and with a focus on calculation, while university mathematics is more rapid, more rigorous, and more conceptual (and, yes, plain harder !). It requires an entirely different frame of mind, which takes time to acquire.
In order to make the transition easier, we strongly recommend ample preparation. The mathematics department provides several ways to prepare