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考生注意:本试卷共三道大题(29个小题),分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。第Ⅰ卷1至2页,第Ⅱ卷3至8页,满分120分。考试时间120分钟。第Ⅰ卷(选择题共54分) 一、选择题:本大题共18小题;每小题3分,共54分,在每小题给出的四个选项中,只有一项是符合题目要求的。 (1)如果双曲线的实半轴长为2,焦距为6,那么该双曲线的离心率为 (A)3~(1/2)/2;(B) 6~(1/2)/2;(C)3/2;(D)2。 (2)函数y=(1-tg~22x)/(1+tg~22x)的最小正周期是
Candidates Note: This paper has a total of three major questions (29 questions), divided into Volume I (multiple-choice questions) and Volume II (non-multiple-choice questions) in two parts. Volume I, pages 1-2, Volume II, pages 3-8, out of 120 points. 120 minutes examination time. Volume I (Multiple-choice questions total 54 points) First, multiple-choice questions: This topic is a total of 18 small questions; each question 3 points, a total of 54 points, in each of the four questions given in the four options, only one is in line with Title requirements. (1) If the hyperbolic half-axis length is 2 and the focal length is 6, the eccentricity of the hyperbola is (A)3~(1/2)/2; (B) 6~(1/2)/ 2;(C)3/2;(D)2. (2) The minimum positive period of the function y=(1-tg~22x)/(1+tg~22x) is