Current location - Training Enrollment Network - Mathematics courses - In 2009, Shenyang No.2 Middle School took the math answers for the next semester at the end of the first year of high school.
In 2009, Shenyang No.2 Middle School took the math answers for the next semester at the end of the first year of high school.
Download address,/gzjy/86864.shtml.

Lz can download it yourself ~ some things can't pass the exam.

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1. Multiple choice questions:1234 5678 9112.

Fill in the blank: (13) (14)10 (15) (16) ②.

Third, answer the question.

17. Solution (1):

You can get it.

,( )

The monotone increasing interval of ∴ is ().

(2)∵ ∴

When, when

The maximum value of is 1+ 1 = 2+

Order 2+= 4 ∴ = 2.

18. Solution: from, from

and

By the known: ⅷ

(1) When > 1

, according to the domain,

∴, which contradicts > 1

(2) When 0 < < 1

Have to

∴ or∴

To sum up, get

19. Proof:

∫x > 0,y>0

∴ (If and only if X = Y, the equal sign holds)

(The equal sign is true if and only if x =)

(The equal sign holds if and only if y =)

that is

The equal sign holds if and only if x = y =.

20. solution: let a and B.

Then a+b, a+b

The line of point A, point P and point E * * *, the line of point D, point P and point C * * *

There is a sum of real numbers, so A+B

a+ b

Ni +a+b

Starting from the basic theorem of plane vector

solve

∴ (㎝2)

(㎝2)

Therefore (2)

2 1. solution (1):∫A-MB =

a+b=(2,0)

∴ If A-MB and A+B * * * lines, there are still

∴ .

(2) ∵ The included angle between A and C is obtuse.

∴ac