函数、二次函数与中考(国外英语资料).docVIP

函数、二次函数与中考(国外英语资料) The most challenging challenge is to promote yourself. Michael F Staley Function, two function and middle exam Self-reliance middle school, Jia Guizhi In recent years the senior high school entrance examination papers can be found, the function (especially quadratic function) for senior high school entrance examination in particular components: such as Zhejiang Province in 1999 a total of 8 copies of examination papers (including provincial papers), 8 papers for the last item of comprehensive statistics found problems with a quadratic function. Do 3 questions, and Zhejiang Province in 2000 8 examination papers (including provincial papers), turned out to be 8 copies of all papers against the problem is a comprehensive problem with quadratic function as the backbone; in 8 parts of Zhejiang province in 2000 exam (including provincial papers), such as Jinhua, Quzhou City senior high school entrance examination volume, function, equation and inequality type accounted for 44.2% (volume I) and 73.3% (II). From this, we can believe that in the exam papers this year, questions about functions, equations and inequalities still occupy a large proportion. I. some basic properties of functions and two functions 1, in the function of the image coordinates satisfy certain points on the function, and the coordinate function of image points on certain functions satisfying analytical, so judge a plane in the rectangular coordinate system is in the function image, only the coordinates into the resolution function point into test, can satisfy the function a formula of the show in the image, does not meet the function that point is not in the image. 2, find the intersection coordinates of the two functions, that is, the solution of the two functions of the composition of the solution of two yuan equations. 3, to solve the problems in function, should pay attention to the angle between the X axis and Y axis between the plane Cartesian coordinates to Cartesian and Pyth