Mathematics Final Exam Research Volume 2011.1.11

(Time: 100 minutes, full mark: 150 minutes)

Note to candidates:

1. This paper contains three major questions, including ***25 questions. When answering questions, candidates must answer in the position specified in the answer sheet according to the requirements of answering questions. Answering questions on draft paper and this paper is invalid.

2. Except for the first and second questions, unless otherwise specified, the main steps of proof or calculation must be written in the corresponding position on the answer sheet.

1. Multiple choice questions: (There are 6 questions in this big question, 4 points for each question, out of 24 points).

[Of the four options in the following question, one and only one is correct. Select the code of the correct item and fill it in the corresponding position on the answer sheet]

1. Of the following four functions, the one that must be quadratic is (▲).

(1); (b) and:

(c) and: (4).

2. The following statement is incorrect (▲)

(a) If it is a real number, then;

(b) If or;

(c) A vector with a length of 1 is called a unit vector;

(d) If it is a real number, then.

3. Give the quadratic function image as shown in the figure, and the symbols of A, B and C are (▲).

(Figure 3)

O

x

y

(A) >0，> 0，> 0； (B) 0； (D) 0。

This is only part of it. It is too big for you after adding my qq. 129 1700872.