论文部分内容阅读
一道全国联赛加试题及其背景分析
【机 构】
：
山东枣庄市第四十中学277200
【出 处】
：
中学教研：数学版
【发表日期】
：
2001年3期
其他文献
The electron spin resonance spectra of N-carbamoyl-N-(l-oxyl-2,2,5,5-tetramethyl-pyrrolin-3-yl) urea compounds in ten solvents with different polarities were de
Synthesis of 1,2:4,5-di-O-Isopropylidene-3-C-Cyano-β-D-ribo-hex-2-ulo Pyranose by Phase Transition C
Introduction The cyano branched carbohydrates are useful, versatil intermediaries for the synthesis of branched sugars having biological activity in nature. Owi
<正> 在不少数学竞赛辅导资料中,都有专门介绍用迭代法解函数方程的内容,但笔者发现,用迭代法求出的结果有时只是所给函数方程的一个特解。下面用文献[1]中的两个例题来加以
Kinetics and Mechanism of Oxidation of Glycol by Dihydroxydiperiodatonickelate ( Ⅳ )Complex in Aqueo
The kinetics of oxidation of glycol by dihydroxydiperiodato nickelate ( Ⅳ) complex (DDN) was studied by spectrophotometry in aqueous alkaline medium in a tempe
去年5月以来，台湾民进党当局顽固坚持“台独”立场，拒不承认‘九二共识”及其两岸同属一中的核心意涵，造成两岸联系沟通和协商谈判机制中断，两岸关系和平发展成果遭到严重冲击，台
Highly Catalytic Enantioselective Addition of Diethyl Zinc to Aldehydes and Chalcone in the Presence
Catalytic asymmetric carbon-carbon bond formation is one of the most important reactions and have attracted much attention to develop more efficient enantiosele
期刊