trigonometric approximation 中文意思是什麼
trigonometric approximation
解釋
三角近似法- trigonometric : adj. 【數學】三角學的；（用）三角法的。
- approximation : n. 1. 接近；近似。2. 【數學】近似值。3. 概算，略計。
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Approximation of some classes of periodic functions of two variables by trigonometric polynomials
一個二元周期函數類用三角多項式的逼近 -
The obtained results in the paper are as follows : ( 1 ) the expansion of fourier series of orthogonal trigonometric polynomial for conditional mathematical expectation and function of random variable ; ( 2 ) the best approximation of trigonometric polynomial about another random variable for function of a random variable ; ( 3 ) the best approximation order of trigonometric polynomial for function of random variable
摘要獲得了如下結果： （ 1 ）條件數學期望及隨機變量函數的三角多項式級數表達； （ 2 ）一個隨機變量關于另一個隨機變量的三角多項式的最佳逼近； （ 3 ）隨機變量函數被隨機變量三角多項式最佳逼近的階。 -
The trigonometric interpolation polynomials ' simultaneous approximation of functions and their derivatives
三角插值多項式對函數及其導數的同時逼近 -
A kind of operator of trigonometric interpolation polynomials with bivariate product was constructed based on an equidistant node set, so that the operator could be converged uniformly to bivariate continuous functions with periodicity of 27 on whole plane, and the convergence order of the approximation would be optimal for a body of functions with arbitrary - ordered continuous partial deritives
摘要構造了一類基於等距結點組上的二元三角插值多項式運算元，使得該運算元在全平面上一致收斂到每個以2為周期的二元連續函數，並且對具有任意階連續偏導數的函數全體的逼近具有最佳收斂階。
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