三角方程

并行求解三角方程组的二分消元法

Bisection Elimination Methods for Parallel Solving Systems of Triangular Equations

用级数展开简化超越三角方程，避免了迭代求解的麻烦，提高了曲线拟合效率。

The overstep equation of triangle is simplified with expanding series to improve computing efficiency .

在数字式交鄄交变频器中，一般采用直线方程近似三角方程的方法实现余弦交点法求触发角。

An algorithm to realize the cosine wave - crossing method in digital cycloconverter is performed by using the linear equation to approximate trigonometric equation .

三角Stein方程的systolic算法

A Systolic Algorithm for the Triangular Stein Equation

介绍了用牛顿迭代法求解齿轮计算中的两类超越三角函数方程的原理，提供了基于MATLAB的M文件编制的求解程序。

This paper presents the principle that the two transcendental equations of trigonometric function in calculating the gears ' parameters can be solved by Newton iteration algorithm . Two procedures based on M-file of MATLAB software are given out .

在每次迭代中，通过对两个分块矩阵的QR分解和一个稀疏三角线性方程组的求解，实现了系数矩阵的三角分解。

At each iteration , triangular factorization of the coefficient matrix is carried out by performing QR decomposition on two partitioned matrices and by solving a set of linear equations involving a sparse triangular matrix .

果树干周生长规律常用Logistic方程、Mitscherlich方程、三参数和四参数的Richards方程、三角函数方程来模拟。

Trunk girth growth of the fruit tree was studied by means of Logistic equation , Mitscherlich equation . Richards equation with three parameters and four parameters , Tricorn function equation and Weibull equation in this paper .

一类无结构三角网上抛物方程的有限差分区域分解算法

Finite difference domain decomposition algorithm on unstructured triangular mesh for parabolic equation

结构三角网上抛物方程的有限差分三层交替方法

Finite Difference Three-level Alternating Methods for the Two-dimensional Heat Equation on a Structured Triangular Mesh

在引入模糊数概念的基础上，给出了三角模糊数方程的简便求解方法。

Based on the introduced fuzzy numbers , this paper provides a simple way and an operation law of the equation of triangular fuzzy numbers .

本研究利用来源于澳大利亚新南威尔士州不同生长条件下的辐射松人工林样木干形数据，比较了广义Brink干形方程和三角函数干形方程对去（带）皮直径的拟合效果。

This paper compares trigonometric variable-form taper function with generalized Brink stem profile function when estimation predicting diameter under ( over ) bark at any height of stem using sample taper data collected from Pinus radiata plantations in New South Wales , Australia .

利用ABS算法的隐式LQ分解，通过有限步迭代求出原问题变量的解，同时形成求解乘子的上三角系数阵的方程；给出了算法的具体过程，分析其数值稳定性和计算量；

The implicit LQ factorization of ABS method is used , and the detailed procedure of the algorithm is given to solve variables of original problem in finite iterations , and to form the upper triangle coefficient matrix equations for multipliers at the same time .

块Toeplitz三角阵求逆及块Toeplitz三角线性方程组求解的复杂性

Complexity of Inversion of Block Triangular Toeplitz Matrices and Solution of Block Triangular Toeplitz Linear Systems