The term "forced" has several meanings, depending on its context.
1) In a general sense, it can refer to something that is compelled or required to do something against their will; for example, "She was forced to work long hours."
2) It can also be used in the context of physical force, as in "The police were forced to use violence to control the crowd."
3) In mathematics and physics, it refers to a function or equation that is derived from another by applying rules of differentiation or integration. For example, if y = x^2 + 1, then the derivative of this function with respect to x (dy/dx) can be found using calculus, resulting in dy/dx = 2x. In this case, the derivative was "forced" upon us by applying mathematical rules.
4) Finally, it can also refer to something that is compelled or required to do something against their will; for example, "He was forced to work long hours."