In this paper , two new trigonometrical inequalities are given, and applied to discuss triangle shapes.
给出两个新的三角不等式, 并将其应用于讨论角成等比的三角形形状.
The flexural problems of orthotropic rectangular plate with four free edges rested on elastic foundation have been discussed in this paper and analyzed by the Fourier trigonometrical cosine series and double trigonometrical cosine series.
本文利用Fourier双三角余弦级数和单三角余弦级数,讨论和分析了弹性地基上四边自由正交各向异性矩形板的弯曲问题。
Calculation of the electric potential and capacitance of a confocal elliptic capacitor by transform of inverse trigonometrical function of complex variable
用复变反三角函数变换求共焦点椭圆柱形电容器的电势及电容
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