This is a review from "the future", which means while studying Calculus, you have to come back constantly to review what the dy/dx means. Refer to Khan academy from Differential Equation section: Addressing treating differentials algebraically Or it can be represent as df / dx or d/dx In this form, we write dx instead of Δx heads towards 0.Īnd the derivative of is commonly written as:įor memorizing, just see d as Δ, reads Delta, means change. In Lagrange's notation, the derivative of f(x) expressed as f'(x), reads as f prime of x. Refer to Khan academy article: Derivative notation review. “Derivatives are the result of performing a differentiation process upon a function or an expression. Refer to Mathsisfun: Introduction to DerivativesĪ Derivative, is the Instantaneous Rate of Change, which's related to the tangent line of a point, instead of a secant line to calculate the Average rate of change. Simply saying, it's just the SLOPE of ONE POINT of a graph (line or curves or anything).
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