Shijiazhuang city 2009-20 10 school year second semester senior one math final exam answers.

Shijiazhuang city 2009 ~ 20 10 school year second semester final examination paper.

Senior one mathematics (answer to volume A)

Multiple choice questions:? 1—5ABADD6— 10CBCCB？

Fill in the blanks:

1 1. 12.？ 13.

14. 15. 16.

Third, answer questions:

17. Solution: 3 points.

∵ perpendicular to the straight line,

∴, .................................. 6 points.

And a straight line passes through point d,

The linear equation of ∴ is:

, that is, ..................................................................................................................................+10.

18. (1) Proof: ∵,? ,

∴, and .................... 4 points.

It can be concluded that the series is based on the first term and the common ratio is a geometric series. ......................................................................................................................................................

(2) As can be seen from (1)

........................., 9 points.

................... 12 point

19. (The full score of this small question is 12)

Solution: according to the meaning of the question: in the middle,

Yes,,? ........................., 4 points.

In the class, I got

∴? .................... 10 point

Answer: The distance between point C and point D is ....................................................................................................................................................................

20. (The full score of this short question is 12)

Solution: If we produce 100 tons of product A and 100 tons of product B, and the profit is1000 million yuan, then the constraint conditions are:

....................., 4 points.

The objective function is ... 6 points.

Make a feasible region and transform the objective function into this set of planes? The greater the intercept of a straight line on the axis, the greater it is.

Solution, that is, the intersection of two straight lines is ... 10.

When the objective function is the most outdated, at this time,

Therefore, when100t of product A and100t of product B are produced, the maximum profit is1100,000 yuan ... 12 points.

2 1. (The full score of this small question is 12)

Solution: (ⅰ)? In a tetrahedron, there are intersecting straight lines.

So face it, .................... scored 3 points.

Face, so .................. 5 points.

(2) It was the plane angle of dihedral angle at that time, that is.

In the tetrahedron, you can find

So,,,? .................................................................., eight.

In, the height of the side is

,? ........... 10 point