This article introduces how to use derivatives to calculate the second, third, and fourth derivatives of prices, and explains their applications in the financial market. The first derivative represents the change in velocity, the second derivative represents the change in acceleration, the third derivative represents the change in the rate of change of acceleration, and the fourth derivative represents the change in the rate of change of acceleration. The article also discusses the characteristics of derivatives as high-pass filters and the differences in cutoff frequency and corner frequency for different orders of derivatives. Finally, the article mentions some popular technical indicators that use the concept of derivatives and emphasizes the need for smoothing or other processing techniques to reduce the impact of errors and noise in practical applications.