Let’s be honest—calculus is hard. But the Titas publication (often written by the UPD Math Department faculty themselves) is specifically tailored to the UP curriculum.

Calculus-1 by Titas Publications is a widely utilized undergraduate textbook in Bangladesh, covering essential differential and integral calculus for first-year students. Updated editions frequently feature solved problems, exam suggestions, and comprehensive coverage of functions, limits, and derivatives. To purchase the official physical edition, visit AwesomeMath Calculus CD - Book 1 - AwesomeMath

| Feature | Benefit | | :--- | :--- | | | 80% problems / 20% theory. Perfect for engineering students who learn by doing. | | Local Context | Uses metric units and local exam patterns. No confusing imperial measurements. | | Affordability | The physical copy is cheap; the PDF is often shared freely among friends. | | Exam Mimicry | Problems are structured exactly like "Long Exams" in Philippine universities. |

If you are looking for a free PDF of the exact current UPD edition? You probably won't find it legally. But you can find a "second-hand" digital copy from a friend, or you can buy the physical book and scan it yourself for your tablet.

: The book covers the fundamental concepts of calculus, including limits, derivatives, and applications of derivatives. It provides a comprehensive introduction to the subject, with clear explanations and examples.