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![Second partial derivative test - Wikipedia, the free encyclopedia](https://www.iarticlesnet.com/pub/img/site/s_35.jpeg)
Second partial derivative test - Wikipedia, the free encyclopedia
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日期:2024-07-07
行動版 - The Hessian matrix H of f is the 2 × 2 matrix of partial derivatives of f: H(x,y) ... is a saddle point of f. If D(a ......看更多