求導數 的英文怎麼說

中文拼音 [qiúdǎoshǔ]
求導數 英文
derivate
  • 求 : Ⅰ動詞1 （請求; 要求） ask; beg; request; entreat; beseech : 求人幫忙 ask sb a favour; ask a favou...
  • 導 : 動詞1. （引導） lead; guide 2. （傳導） transmit; conduct 3. （開導） instruct; teach; give guidance to
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. On one hand, numerical derivatives provide proper search directions in optimization, therefore their accuracy is of great importance for fast convergency. on the other hand, derivative evaluation is one of the most time - consuming steps in optimization

    當前的高性能數學規劃演算法大都依賴于導數計算以快速收斂到最優點，所以對求導精度的要求比較高；而導數計算所消耗的時間占優化時間的比例又非常的大。
  2. In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method

    在數字式保護中，如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增，本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值，以便在提高采樣率的同時降低噪聲誤差的影響，並將其應用於基於32位浮點dsp的新型變壓器保護裝置。
  3. The required partial derivatives are easily worked out.

    欲求的偏導數不難得出。
  4. Of course, the prime does not refer to differentiation.

    當然素數不指求導。
  5. Used perturbed method and making inexact generalized gradient projection with cone, perturbed generalized gradient projection method is proposed. the field of the algorithm is extended. numerical experiments show that the method is effective. secondly, using the trust region form and the pseudo - directional derivative of minimax problem, we propose the trust region form of minimax problem

    對信賴域法作了進一步的研究，藉助minimax問題的偽方向導數，構造出其信賴域二次模型，並結合非單調策略，給出求解minimax問題的簡單易行的信賴域演算法。
  6. Finally, this thesis discussed these following questions : first, the algorithm of used the error image for improving the purpose of the edge detection. secondly, we have transformed the solved question of the first and the second directional derivative to frequency domain and founded they have a single formulae in frequency domain. thirdly, we have described the singular signal and the noise by using the correlations of the neighbor data after wavelet transform

    最後，在傳統的邊緣檢測演算法和小波分析的邊緣檢測演算法之外，對以下幾個方面也進行了一些討論： 1 ）利用誤差圖像來提高邊緣檢測效果的演算法； 2 ）將求解任意方向的一階、二階方向導數的問題轉換到頻域中去求解，發現在頻域中它們具有簡單易用的公式，使得原來求解任意方向的一階、二階導數的比較困難的問題變得容易實現了。
  7. With the promoting of the needs of calculating the derivatives effectively and accurately diversiform automatic differentiation tools have been developed

    由於對導數值有效、精確計算等需求的推動，已發展了多種自動微分工具。
  8. Introduction of a new method of seeking the derivation of a fragmental function at the point of demarcation

    分段函數于分界點處求導方法之探討
  9. Presents a new method for fairing of curves which has a small flexibility based on fitting the derivative of second order of curves. we fit the derivative of second order of curves by a polynomial fitting, then find an indefinite integral of this polynomial to get a approach of curves. otherwise, we discuss the analyze of the error and the optimize of fairing to this arithmetic

    提出了一種針對小撓度曲線的逆向曲線光順演算法，該演算法直接擬合曲線型值點列的二階導數曲線，然後通過兩次積分來反求出光順后的曲線，並對該演算法的誤差分析、效果分析、光順優化等問題進行了深入探討。
  10. In this papery we discussed the the extremum of function of several variables, and generalized the result of paper [ 2 ], then we give the method of solving the extrme value of n - component function using first class partial derivative

    摘要討論了多元函數極值的問題，推廣了文獻[ 2 ]的結果，並給出了利用一階偏導數求多元函數極值的方法。
  11. If one consigers the fact that the firstderivative of the function may be difficult to compute analytically the new procedure will become an attractive alternative and it has quartic convergence

    這種混和方法對于解決導數求值比較困難的問題是一個良好的選擇，而且它具有四階的收斂性。
  12. 2. analyzing the displacement of the follower based on the assur - group method and the differentiation of the cubic spline function 3

    2 .以桿組分析方法為基礎，結合三次樣條函數求導法進行從動件的位移分析。
  13. This interpolation module uses the popular and advanced nurbs interpolation technology. the procedures of math processing for nurbs, preprocessing for interpolation and real - time interpolating running on dsp are presented in this article. the interpolating procedure uses an advanced self - adjusting interpolation method, which can automatically adjust the length of interpolation according to machining speed, acceleration and the tolerance of bow height

    插補模塊則採用了當今最流行最先進的nurbs插補技術，設計了nurbs數學處理程序，插補預處理程序，運行於dsp的實時插補程序，該插補軟體採用了先進的自適應插補方法，可以根據加工的速度，加速度，弓高誤差的要求自適應調整插補步長，同時採用了對插補點的預估演算法，免去以往加工方法中求導的運算，大大降低了運算量，提高了加工速度。
  14. The gpss have one output and two inputs which are speed error and its derivative. selecting triangular function as fuzzy variable ' s membership function, mamdani max - min synthetic method as fuzzy inference method and centroid method as denazification method, fuzzy control rules are given according to the control expectation of governor and the experience of operating staff

    這種模糊gpss採用二輸入單輸出結構，以機組轉速誤差及其導數為輸入量，以三角形函數作為模糊量的隸屬函數，根據水電機組穩定控制要求和操作人員的經驗制定控制規則，以mamdani的max - min合成法和重心法分別作為模糊推理方法和清晰化方法。
  15. The result can be used in control problems whether the time interval is finite or infinite, the control set is bounded or unbounded, and also for systems with a weak differentiable function, i. e., the function f is only strong continuously g - differentiable but not f - differentiable. so, th 6. 2. 7 is a uniform theory of optimal control, and it has wide - ranging applications

    可以看到，我們的結11摘要果可用於有限時域和無限時域、有界控制和無界控制、並且對系統中函數f的可微性要求也有較大的減弱? f對狀態變量x可以是僅有強連續的g一導數、不要求為f一可微。
  16. Discussion on methods to do the summation infinite progression

    導數在無窮級數求和方法中的應用
  17. At parents ' request, most schools issue summer reading lists and study guides

    應家長要求，多數學校都會發給學生暑期課外讀物的書單和導讀。
  18. To answer the question " why to reform ", the paper explores the cause in terms of demand, efficiency, competition, and environment, and proposes that demand for consumption is the outset of the distribution channel as well as the end of the channel. any change in quantity and structure of consumer demand will result in corresponding changes in the structure and behavior of the distribution channel. as it can reflect the function and utility of the specified system in a specific period, efficiency has become the driving force to initiate the reform in the distribution channel

    消費需求在數量上與結構上的每一次改變，都會拉動流通渠道結構與行為的相應變革；效率作為特定歷史條件下特定系統的功能與效能反映，其經濟性、客觀性及發展性特徵成為流通渠道變革的驅動力；競爭是市場經濟的基本現象，它在流通渠道中表現為部門競爭及部門間競爭，兩個方面競爭的共同作用必然導致流通渠道整體結構、數量、關系等一系列相應的變革；環境是流通渠道生存的空間，其從政治、經濟、人口、技術等方面對流通渠道形成制約，環境的變化刺激流通渠道產生相應的變革。
  19. Differentiate from first principle

    從基本原理求導數
  20. By taking the early investment and annual running charge as objective function for optimum seeking, and by means of computers, complicated calculation is avoided

    將初投資額與年運轉費用作為尋優目標函數，採用復合形電演算法求解，避免了求導數復雜的數學運算。
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