👉 Under derivative in mathematics refers to a function or its derivative. It is a measure of how much the original function changes as one variable increases or decreases. The derivative of a function at a point x = a represents the instantaneous rate of change of that function when the input value is a, and it can be calculated by taking the limit as this input approaches a. For example, consider the function f(x) = 3x^2 - 5x + 7. The derivative of this