三角函数

While the standard Airy function, used frequently in the uniform asymptotic formulas for classical orthogonal polynomials, behaves like the exponential function on one side and the trigonometric functions on the other side of an extreme zero,the q-Airy polynomial behaves like the q-Airy function on one side and the q-Theta function on the other side.

在经典正交多项式的一致渐近公式中我们通常要用到Airy函数，这个Airy函数在一个极端零点的一边表现为指数函数，另一边又表现为三角函数。同样地，q-Airy多项式在一边表现为q-Airy函数，另一边又表现为q-Theta函数。

A semi-empirical model of a parasite system power of a fuel cell engine is developed by modifying the antitrigonometric function,and is verified by different test data.

分析了燃料电池发动机辅助系统功率的变化特点及其规律，并在试验研究的基础上，通过反三角函数进行改造，建立了辅助系统功率特性的半经验模型。

The algorithm utilizes the rotating transformation theory of vector, and derives a mathematical expression of trigonometric function which has the interval monotonicity. By comparing the values of mathematical expressions, the sizes of the angles can be judged, this avoids the troublesome calculations of angles, diminishes errors and raises efficiency.The prototype of 3D reconstruction system uses the DXF file as the data source.

文中的算法采用矢量的旋转变换理论，通过计算各分支路径与当前路径之间的三角函数值，利用变换后的三角函数表达式的区间单调性，将角度值的比较转换为三角函数表达式值的比较，从而避免了繁琐的角度值计算，减少了误差，提高了执行效率。

Transcendental function can't be expressed in terms of algebra.

超越函数包含了三角函数，反三角函数，指数函数以及对数函数。

The modified acceleration deceleration control algorithm of trigonometric function is proposed on the basis of studying the acceleration deceleration control algorithm of trigonometric function.

在对三角函数加减速控制算法研究的基础上，提出改进的三角函数加减速控制算法。

I find in my teaching that the students have a lot of difficulty in trigonometric function knowledge, An investigation also shows 30% of the students do not like studying the trigonometric function most.

教学中我发现学生很害怕三角函数知识，调查也表明：30％的学生最不喜欢学习的内容是三角函数。

Then,the great amount of operation of square and trigonometric function is replaced by little amount of operation of square and trigonometric function and great amount of arithmetic operation.

在菲涅尔全息图的计算中，用少量的三角函数、平方运算和大量的四则运算代替原来大量的三角函数和平方运算，减少了全息图的运算量。

In order to overcome the shortcoming brought from the calculation of the trigonometric function, the approach of numerical equivalent, which remove the trigonometric function from the nonlinear equations of SHEPWM, is presented in this dissertation.

在特定消谐方程组中含有大量的三角函数，方程求解时，大量的三角函数计算限制方程求解速度的同时也降低了求解精度。

As part of the contents of this triangle involving more to the formula, with a corresponding change it, in solving problems, how to destinations such as triangular constant transformation trigonometric function is the key to learning paper presents some problems to resolve Trigonometric function methods and techniques, hope to play a role.

由于三角这部分内容所涉及到的公式比较多，相应地变化也就多，在解题中，如何有目的地进行三角恒等变换是学好三角函数的关键。本文介绍一些解决三角问题的方法和技巧，希望能起到抛砖引玉的作用。关键词三角函数；方法；技巧

By analyzing the characters of Bezier, we construct trigonometric polynomial curves in the space of trigonometric functions, which assume the characters of Bezier curves.

本文主要工作：(1)以Bézier曲线的特点为基础，在三角函数空间上构造了具有Bézier曲线特性的三角函数多项式曲线，称其为TC-Bézier曲线。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。