Fill in the blanks below 1+2+1=4； 1+2+3+2+1=______ ； 1+2+3+4+3+2+1=_______ ；1+2+3+4+5+4+3+2+1=_______ ； 1+2+3+… +100+99+… +1=_______ ； 1+2+3+… +n+(n-1)+… +1=_______ .

Fill in the blanks below 1+2+1=4； 1+2+3+2+1=______ ； 1+2+3+4+3+2+1=_______ ；1+2+3+4+5+4+3+2+1=_______ ； 1+2+3+… +100+99+… +1=_______ ； 1+2+3+… +n+(n-1)+… +1=_______ .

9, 16, 25, 10000, n squared

A mathematical problem of finding regularity
Kane data is a group of data arranged according to a certain rule. His first five numbers are one-third, three fifths, one-half, seven seventeen, nine twenty-six. According to this rule, the eighth item of this sequence should be?
I know the answer, three out of thirteen. But I don't know the law. Please tell me the law in detail,
I want regularity

Molecules 1 35 7 9 11 13 15 &; &; &;
Denominator 3 5 10 17 26 37 50 65
The numerator is an arithmetic sequence with difference 2
The difference between two adjacent numbers of denominator is 2,5,7,9,11,13,15, and the latter difference is the former difference plus the first difference (i.e. 2)

Looking for the scenery in composition

Scenery is not necessarily magnificent scenery, a person's small action can also become a beautiful scenery. The tide receded, a little boy bent over again and again at the seaside, no one understood his intention. An old man came forward and saw that the little boy was picking up the fish that could not return to the sea on the beach and throwing it into the sea

How to write a composition about scenery
pally

[thinking analysis]
[problem solving process]
How to write a scene?
1. The order of description should be from inside to outside, from inside to outside, from inside to outside, from inside to outside
2. It can be written according to the types of scenery, such as mountains, water, flowers, birds; waterfalls, stones, peaks, caves; pavilions, platforms, pavilions, etc. it is necessary to write the light, color and taste of scenery; it is necessary to write not only its static state, but also its dynamic state, as well as its environmental atmosphere
3. Observe carefully and describe the different features of the scenery in different seasons. Don't make things up by imagination
4. People and things can also be written concretely in scenery. If people, scenery and things are combined to write, the composition can be more touching. Tonight in the country is a good example
5. Don't forget the relationship between yourself and the scenery when you write about the scenery. You should consciously write your feelings and feelings into it, so that people will feel immersive after reading it. Isn't the story of Double Dragon Cave in Jinhua written by grandfather Ye Shengtao with such characteristics?
It is necessary for you to read more and accumulate more, and don't wait for the time to look for it

How to write a composition about scenic spots

Qingshan Qingshui and his hometown
Stream microwave, bright moon in the sky, these I have been deeply attracted. The shadow of trees whirling, wild flowers everywhere, their silhouette reflected in the water, covered with clean water, clear water microwave, clear water moon and sunset, clear water shade and light rain, I have been deeply attracted, and intoxicated
Always love to think back to the ancient city, not only where I was born and raised, but also because there are unforgettable mountains and clear water
My hometown is at the edge of Taihang Mountain. It is a happy land surrounded by the desolation of mountains. There are streams, waterfalls, fish, rice and fruit, and birds chirping. The green hills on the edge of Taihang Mountain are undulating and winding. When I was a child, I always loved to see its image in the distant world at dusk, which was surprisingly magnanimous, resolute and optimistic, A solemn and magical combination, shaking the hearts of a young girl. After many years, I still can't help thinking about it. It seems that they have become the essence of eternal nature in natural creation, and only they can explain the character of the land more precisely.
Stream microwave, bright moon in the sky, these I have been deeply attracted. The shadow of trees whirling, wild flowers everywhere, their silhouette reflected in the water, covered with clean water, clear water microwave, clear water moon and sunset, clear water shade and light rain, I have been deeply attracted, and intoxicated
In autumn, looking at the heavy branches, such as red dates and apples, it's really tempting. Naughty children, in order to pick it, I don't know how many falls they fell, but they won't be laughed at. Only the cry of pain makes many kind-hearted people can't bear it. There will always be kind-hearted uncles and aunts holding you up and coaxing you intimately, Pick a handful of red dates for you. Time has changed. I think of myself as a proud son of heaven, enjoying the kindness and kindness of the world
Although many years have passed, I still yearn for it, praise it, praise its charming scenery that will never be obliterated by the passing years, and respect the sincere and honest people in my hometown
Ah, qingshanqingshui, hometown, let me dream of the ancient city

How to write a composition with my scenery

As soon as you read my scenery, you can see that this article should focus on the word "scenery" (is it "elegant demeanor"). The connecting point is "I", and how to show my scenery. I think: first of all, you can take a look at everyone's elegant demeanor, show their own peaks, and bring out the following, I also have scenery. The second is: my scenery in life, learning or that sudden appearance. Say two or three things; the last conclusion

Write landscape composition! Urgent

I stop and go to enjoy the beautiful scenery here. When I see the beautiful scenery here, I can't help but stop. Because the scenery here is really charming, it uses the eyes that can generate electricity to make me stay here. I am shocked, because I've never seen such a lively and dynamic beauty

An article describing the scenery of the West
Plus author

Title: Grassland Author: Lao She

A composition describing scenery

Summer scenery summer, always come quietly, and so suddenly, perhaps just one night, when we wake up, we find that the weather suddenly becomes hot, as if wearing long sleeves has been a long time ago. Lotus ushered in the summer, but the wind has bid farewell to the spring, the school store seems to have known

New achievements and new feelings

The so-called storm is a setback in life, failure or tribulation, in a word is not smooth things, such a composition is very easy to write, example: life needs setbacks, everyone pursues happiness, happiness, and escape disaster, sadness, we will always be sad for setbacks, for their own happiness and sad