Applied mathematics is the application of mathematical methods by different fields such as physics, engineering, medicine, biology, finance, business, computer science, and industry. Thus, applied mathematics is a combination of mathematical science and specialized knowledge. The term "applied mathematics" also describes the professional specialty in which mathematicians work on practical problems by formulating and studying mathematical models.
In the past, practical applications have motivated the development of mathematical theories, which then became the subject of study in pure mathematics where abstract concepts are studied for their own sake. The activity of applied mathematics is thus intimately connected with research in pure mathematics.
The math prof. is requesting a research on an applied mathematics topic, he suggested some topics like:
1- Delayed Diffrential Equations and Their Apps
2- Population
3- Fingerprint Recognition
4- DNA
5- Cryptography
I like cryptography but I'm still confused about which topic to...