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At 14:40 on February 20, 2013, Ding Wei

Water and fire wood fire earth (five elements: gold weak, fire wang, fire life) with five grids and five elements of the name, Zhuang surname girl, the following name auspicious: (Zhuang + 18 paintings + 14 paintings) Zhuang Fu, Sui, Bin(water, choose one).

Chang, Cui, Yu (Jin, choose one).

Zhuang Hui, Rui, Juan (wood, choose one).

Fei, phoenix, ping (water, choose one).

Zhuang Yiran: Comfortable and joyful. Suitable for girls to pick names. From "Historical Records of the Confucius Family": "There are some who are thoughtful, and some who are happy to look forward and have far-sighted ambitions." ”

Answer: 22 days, 6 people per day, a total of 6 22 = 132 people 1980 132 = 15 yuan per day.

So: $15 per person per day.

132 13 = 10 more than 2

Then each person has 15 10 = 150 yuan, and the extra 15 2 = 30 yuan is 165 yuan for 2 people, and 150 yuan for 11 people.

The number of days is 22 days. 6 people are reported every day.

The total number of passengers is 22*6=132.

The average is 15 yuan per person per day.

13 people are distractors and are not considered.

I don't know if you can go into more detail about your question.

Your mistake is to think of (-1,-2) as (-2,-1)(-2,-1) to the point on the circle, and one of the lines is y = 1"

It's not (-2, -1), it's (-1, -2), so the other tangent is not y = 1, mu shed but x = 1

k is infinity when x = 1.

So the maximum value is infinity, and the stuffy mass is not the maximum.

It's ......Isn't it ...... at all?

It's been a long time since I've done it

1) The axis of symmetry is x=-1, and one of the intersection points of the x-axis is (2,0), so a is (-4,0), because 2 and -1 are 3, and the other is -1-3=-4

Then oc=2oa because a is (-4,0) so oa=4 so oc=8, so c(0,8).

d is the point of symmetry of a with respect to the y-axis, a(-4,0) so d(4,0).

2) What do you need to say about the second question......?It's good to substitute the three dots ......

3) It's also very simple, substituting (0,3) into what you calculated in the second problem, and calculate mn, because mn is horizontal, so the height of the parallelogram is the absolute value of (y-3) with high, with mn, with high, the formula for s comes out.

4) I don't know ...... because I didn't calculate the formulaI guess that the formula is a parabola with an opening downward, and it should be easy to find the extremum, right?

I'm sorry I didn't calculate it, but it's best not to copy the question, it's better to know the method and calculate it yourself Remember next time