👉 The term "firmness" is often used in various fields, including mathematics and physics. In mathematical terms, a "firmness" is a property that describes how much a function is sensitive to small changes in its input. For example, if we have a function f(x) defined on the interval [a,b], then a firmness of f(x) at x=a would be denoted as f'(a). Similarly, if we have a function g(x), then a firmness of
