on the teaching of the criterion for relative extrema for multible functions of variables 關于多元函數極值的判別方法的教學
the distribution for function of variables is an important but difficult to be mastered course 摘要隨機變量函數的分布是數學系概率統(tǒng)計課程教學中的一個重點和難點。
in operations research, a procedure for locating the maximum or minimum of a linear function of variables that are subject to linear constraints 在運籌學中,找出受線性約束的變量的線性函數的最大值或最小值的過程。
pseud-sliding mode control in srd is lucubrated, the control law and the switch function of variable-structure control system with sliding mode ( vss ) are designed, the choice of the parameters of pi control and the theory of the combination control are discussed 實驗結果表明準滑模變結構控制策略具有良好的動態(tài)性能和穩(wěn)態(tài)性能,同時可以削弱傳統(tǒng)滑模控制的抖振影響,驗證了理論分析和數字仿真的正確性。
since 1970s financial innovation has been developed rapidly for the integration of many factors, such as development in science-technology, financial deregulation, intensified competition between the financial institutions and pursuing profits of financial enterprises . financial innovation brings a challenge to traditional monetary policy . it changes the function of variables in money demand function 二十世紀70年代以來,金融創(chuàng)新得到了飛速的發(fā)展,這是多種因素匯合的結果,究其原因,有科學技術的迅速發(fā)展,有金融管制的放松,有金融機構競爭的加劇,還有金融企業(yè)自身對利潤的追求等。