题目求函数y=x+(?)的值域.解法一两边平方整理得:2x~2-2(y+1)x+y~2=0①由判别式△=4(y+1)~2-8y≥0解得1-2~(1/2)≤y≤1+2~(1/2).但......

由于井水温度较低，直接影响水稻正常生育和产量，本文提出的井水升温技术是集延长灌水渠和小型晒水地两种方法相结合的迂回水路升温方......

【善良】善良,是一个人的名片。它常常以最简单、朴实、自然的方式,进入人与人之间相互交往的领域。假若善良与善良相遇,往往一个......

十一点的时候,丈夫打来电话,说雨下得有点大呢,我说我马上去送雨伞、三下五除二,穿戴完毕,出发。雨没有丈夫说的那么大,是毛毛雨,......

拿破仑率领军队作战时，同样一支军队的战斗力，便会增加一倍。原来，军队的战斗力在很大程度上基于士兵们对于统率的敬仰和信心。如果统......

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In this paper, we study the robust fault detection problem of nonlinear systems. Based on the Lyapunov method, a robust ......

解决中国的一切问题“关键在党”。这是邓小平党建思想的一个重要观点。深入学习和理解邓小平的这一思想，对于我们充分认识和发挥好......

In this paper we consider the eigenvalue problem of semilinear elliptic equation in R~n(n≥~3)-△u+α(x)u=λf(x, u), u∈......

This paper deals with the preblem of existence and uniqueness of the stationary distributions (abbr., s. d.’s) for the ......

§ 1. Introduction The study of multifunction has been developed extensively with application to mathematics in econ......

台灣女作家三毛曾說:“我的半生,飄流過很多國家?叨任拿鞯纳鐣?我住過,看透,也嘗够了。我的感情不是沒有,我的生活方式,多多少少地......

In this paper, the multiple stochastic integral with respect to a Wiener D’-process is defined. And also it is shown th......

Let φ be a normal function defined on [0, 1) and A~p(φ) Bergman space weighted with φ~p(|z|)/(1-|z|~2) for 1≤p【∞. ......

This paper deals with the bifurcation problems of multiparameter and multibranch and their approximations. It derives ge......