论文部分内容阅读
一、试题再现在复习圆锥曲线这部分内容时,复习资料中出现了如下两道高考题:题目1:(2011年广东理科第19题)设圆C与两圆(x+姨5)2+y2=4,(x-姨5)2+y2=4中的一个内切,另一个外切。(1)求圆C的圆心轨迹L的方程;(2)略。题目2:(2013年新课标1理科第20题)已知圆M:(x+1)2+y2=1,圆N:(x-1)2+y2=9,动圆P与M外切并且与圆N内切,圆心
First, the test questions reproduced In the review of this part of the conic section, review the information appeared in the following two college entrance examination questions: Question 1: (2011 Guangdong Science 19) set C and two round circle (x + aunt 5) 2 + y2 = 4, (x-ai 5) 2 + y2 = 4 in one of the cut, the other cut. (1) find the circle center circle path L equation; (2) omitted. Problem 2: (Problem 20, New Course 1 Science, 2013) The circle M is given by: (x + 1) 2 + y2 = 1, circle N: (x- 1) 2 + y2 = 9, Circumscribed and inscribed with circle N, center of circle