Big brother, big sister, uncle and aunt, everyone come and help me figure out a way 10

Throw away, sell sell, throw clothes, sell monitors, transport things to the station, the station has a consignment office, don't look for logistics, things are broken and they are all in charge, the station is state-owned, and it is more convenient to allocate money.

Train check-in guide.

1) Baggage ticket and parcel ticket are the basic documents for the transportation of baggage and parcels.

2) Bedding, clothes, books for personal reading, cars for the disabled and other travel necessities for passengers' own use may be checked in as baggage. Passengers can check in their baggage once with a valid ticket and unlimited times for disabled cars. Valuables such as currency, securities, precious cultural relics, gold, silver and jewelry, archival materials, and items prohibited by the state and dangerous goods prohibited by the state shall not be included in the baggage.

c) Parcel classification:

Class II parcels: emergency and disaster relief materials, books and periodicals, fresh or frozen fish, meat, eggs, milk, fruits and vegetables.

Three types of parcels: do not belong.

Items wrapped in Class I, II and IV.

Four types of parcels: 1. Radioactive isotopes for first-class transportation, sample boxes, and motorcycles.

2. Foam plastic and its products;

3. Other items that require special transportation conditions as designated by the competent railway authorities.

4. The maximum weight of each piece of luggage and parcel is 50 kg, and the volume is limited to suitable for loading into the luggage cart, but the minimum shall not be less than cubic meters.

5. Items that cannot be transported by package.

1) Corpses, bones, ashes, coffins and other items that can easily contaminate or damage vehicles.

2) Snakes, beasts of prey and live animals exceeding 20 kg each (except for police dogs and animals designated for carriage in the transport order).

3) *** and *** railway authorities issued by the relevant dangerous goods management regulations specified in the dangerous goods, ammunition and chemical products of unknown nature of the carrier.

4) Items prohibited by the state and items not suitable for loading in the baggage cart;

6. The baggage and parcels checked by passengers and shippers are divided into two types: insured and non-insured transportation: When transporting at insured value, the baggage shall be checked according to the declaration, and the package shall be charged 1% of the insured fee.

7. When checking baggage and parcels, the packaging must be complete and firm, suitable for transportation, and the packaging materials and methods meet the national or railway packaging standards.

8. When passengers or shippers check in their baggage and packages, they should fill in the consignment note completely and accurately.

9. Consignment of gold, silver, jewelry, currency**, cultural relics, guns, animals that need to be raised on the way, etc., must be escorted. The escort shall purchase tickets and be responsible for the safety of the items that are afraid of pressure, and the railway shall facilitate the escort's purchase of tickets.

10. The baggage shall be kept free of charge for three days from the date of arrival and the parcel shall be kept free of charge for three days from the date of notification. If the collection date is exceeded, the storage fee will be charged according to the number of days exceeded.

LTL shipments. Beihai to the terminal aquatic product LTL consignment ** table (reference price).

Terminals: Guangzhou, Shantou, Xiamen, Fuzhou, Wenzhou, Ningbo, Shanghai.

Unit price (yuan kg) 1 1

Terminus: Qingdao, Yantai, Guizhou, Yunnan, Jiangxi, Anhui, Fujian.

Unit price (yuan kg) 1

Terminals: Hubei, Henan, Shanxi, Hebei, Gansu, Qinghai, Xinjiang.

Unit price (yuan kg) 2 2 3

To solve this kind of problem, it is recommended that you connect with the knowledge points you have learned and how you proved it in the first place, and it will be much easier to do.

For this problem, the operation that should come to mind should be logarithmic operation.

Let's talk about the process of explaining the questions.

For the first question, we first need to calculate f(1).

By definition, f(1) = f(1) + f(1), so f(1) = 0

There are two ways of thinking in the following calculation, the first is to move the definition to the left by one item, and a negative sign will appear. Another way of thinking is to make it up, which is more practical, but it is not easy for beginners to master. Let's briefly introduce each one.

1) Since f(x1x2) = f(x1) + f(x2), f(x1) = f(x1x2)-f(x2).

Then f(1 x) = f(1)-f(x) = -f(x).

2) Since f(x1x2) = f(x1) + f(x2), so f(1) = f(1 x) + f(x), after simplification, the result can be obtained.

The problem-solving process of the two ideas looks similar, but in the process of solving the problem, they think from different angles, I hope it will help you.

Here's the proof of the even function.

The proof of even functions is much simpler. First of all, according to the method of calculating f(1), let x1=-1 and x2=-1 respectively, and f(-1)=0 can be obtained

In addition, let x1=-1 and x2=x, and then we can get that this function is an even function according to the definition of the even function.

Second, if you think about a function that satisfies these conditions, it should be roughly a logarithmic function in the first place, and that's fine. However, it must also be an even function, which is defined on the negative half axis so the absolute value should be added to x, and in order to meet all the conditions, add a few parameters and it is OK, and the final answer should be.

f（x）=b*log(a)|x|

where b is not equal to 0, and a > 0 and not equal to 1

Hope it helps.

Let x1=x2=1, then we get:

f(1)=f(1)+f(1)

i.e. f(1)=0

Then let x1 = x, x2 = 1 x, then we get:

f(1)=f(x)+f(1/x)

i.e. f(1 x) = -f(x).

Let x1=x2=-1 again, then we get:

f(1)=f(-1)+f(-1)

i.e. f(1)=0

Let x2=-1 again, then we get:

f(-x1)=f(x1)+f(-1)

i.e. f(x) is an even function.

2)、f(x)=c*ln|x|That is, the condition is satisfied, and c is an arbitrary constant.

The two cars met in t hours.

At the time of the encounter, both cars had traveled x km and 1956 - x km.

85 + 65)t = 1956

150t = 1956

t = hours.

x = 85t = kilometers.

1956 - x = kilometers.

That's how to do it, the common multiple is the answer, write an answer: There are 48 people in the fifth and third classes.

You just go on and do the math and get the three numbers 2, 3, and 5, and multiply them together.

The duration of the visit to the China Pavilion is 2 hours = 120 minutes.

Entrance to the Saudi Pavilion.

Therefore, the least time spent is to enter the China Pavilion and take Entrance 1 (time spent: 360 * minutes), visit the China Pavilion (time 2 hours = 120 minutes), and enter the Saudi Pavilion and take Entrance 3.

Total time = 288 + 120 + 150 = 558 minutes = hours.

8 a.m. + hours = i.e. 5 p.m. 18 minutes.

Therefore, it is no longer possible to enter the Saudi Pavilion before 5 p.m. for a tour.

When I heard the news of the Japanese-level **.

Today is Saturday, after returning home from school, I just turned on the TV, and I heard a news that shocked the world--- there was a major class in Japan (it was a grade before).

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