Do I need to learn differential equations?

The answer to this question depends on what you are studying and what your goals are. Differential equations are a type of mathematics used to model physical phenomena, so if you are studying a field that involves physical phenomena, such as physics or engineering, then you may need to learn differential equations. However, if you are studying a field that does not involve physical phenomena, such as economics or computer science, then you may not need to learn differential equations.