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Answers to Lesson 18 in the Chinese exercise book of the fifth grade of primary school published by Jiangsu Education Press
Question 2: poverty inspires good and wise thinking
Answers to lesson 12 of the fifth grade Chinese exercise book (Volume 2) published by Jiangsu Education Press
In this sentence, Sima Qian wrote angrily___________________________ The role of
The "13" and "52" in the sentences not only reflect the great achievements of historical records, but also reflect the incomparable hardships of completing this great work, and embody the great spirit of Sima Qian's all-out efforts to write historical records
It is the function of summing up the full text
Calculation: 1 + 13 − 712 + 920 − 1130 + 1342 − 1556
The original formula is 1 + 13-73 × 4 + 94 × 5-115 × 6 + 136 × 7-157 × 8 = 1 + 13-7 (13-14) + 9 (14-15) - 11 (15-16) + 13 (16 − 17) - 15 (17-18) = 78
What is the chord length of the curve X square + y square + 2x-4y-4 = 0?
Xsquare + ysquare + 2x-4y-4 = (x + 1) & # 178; + (Y-2) & # 178; - 9
From x square + y square + 2x-4y-4 = 0
(x+1)²+(y-2)²=9
When x = 0, y = 2 (1 + √ 2) or y = 2 (1 - √ 2)
2（1+√2）-2（1-√2）=4√2
The chord length of the curve X square + y square + 2x-4y-4 = 0 is 4 √ 2
If the inequality x-2ax + A-A > 0 holds when x ∈ [0,1], the range of a is obtained
First, we construct a quadratic function: y = x ^ 2-2ax + A ^ 2-a
(1) If Δ = 4A ^ 2-4 (a ^ 2-A) = 4A = 0, consider the symmetry axis of quadratic function
If x = A0, a > 2 or A2
If the axis of symmetry x = a > 1, y = a ^ 2-3a + 1 > 0, i.e. a > (3 + √ 5) / 2 or a > 2, only x = 1
How to divide 19.8 by 12?
The equivalent infinitesimal cannot be replaced in addition and subtraction
In addition and subtraction, the limit of two formulas must exist at the same time and be replaced at the same time. Obviously, the limit of three formulas in Formula 1 exists, so it can. Formula 2 calculates the limit step by step, which is wrong. In fact, the essence is that addition and subtraction and multiplication and division are not equal in the sense of operation
Given X & # 178; + Y & # 178; + 4x-8y + 20 = 0, x =? Y =? (X & # 178; + Y & # 178;) - # 178; + Y & # 178; = x & # 178; + 6, then x & # 178; + Y & # 1
x²+y²+4x-8y+20=0
(x+ 2)²+(y-4)²=0
x=-2
y=4
Finding the sum of sequence 1 / 3,3 / 3 ^ 2,5 / 3 ^ 3,..., (2n-1) / 3 ^ n
1 / 3,3 / 3 ^ 2,5 / 3 ^ 3,..., (2n-1) / 3 ^ n common summation method of sequence by dislocation subtraction TN = 1 / 3 + 3 / 3 ^ 2 + 5 / 3 ^ 3 +... + (2n-1) / 3 ^ n ① 1 / 3tn = 1 / 3 ^ 2 + 3 / 3 ^ 3 +... + (2n-3) / 3 ^ n + (2n-1) / 3 ^ n + (n + 1) ② - ② = 1 / 3 + 2 / 3 ^ 2 + 2 / 3 ^ 3 + +2 / 3 ^ n - (2n-1) / 3 ^ (n + 1)
What are exponential and logarithmic expressions
Logan = B is exponential
Or is a ^ B = n exponential?
Please explain what they are!
A ^ B = n is exponential
Logarithm of Logan = b
And they are inverse functions of each other
RELATED INFORMATIONS
- 1. Four answers to the reading questions in the exercise book 4. An unforgettable thing After school on Tuesday afternoon, I took my neighbor's little sister to the street The street was full of people. We came to an old man's toy stand and saw a beautiful comb. I asked him, "how much is this comb?" "fifty cents, it's very convenient," he said. I took out fifty cents and gave it to him. I put a comb in my pocket and went back Children, come back quickly, we'll come back quickly. Why didn't you take the comb? My grandfather said while he put a comb into my hand. I hesitated for a while and left with the comb When I got home, I told my mother all about it. My mother criticized me severely, saying that I took advantage of others and asked me to send back my comb and apologize to my grandfather. Thinking of my grandfather's kind face and sincere expression, I felt that I didn't deserve to be a young pioneer, so I decided to return my comb The next day after school, I went to find my grandfather, but I didn't find him. I didn't see him for five days Although it's been a long time, I feel guilty when I think about it 1. Use "√" to punctuate the passage and choose the correct pronunciation 2. Punctuate the third paragraph of the passage 3. Write the synonyms of the following words Exquisite () hurry () hesitation () guilt () 4. Why does the old man who sells combs shout "we" back? From here we can see what kind of person he is? ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ 5. Why should I return my comb and admit my mistake to my grandfather? ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
- 2. New leaf's reading answers unit 1 test of basic training newly compiled by people's Education Press, 1. Use tick to add some words to the text and choose the correct pronunciation Write a phrase in green and crisp The transition section in the article is the natural section. Its function is to carry on the sentence and open the next sentence 4. Write poems about infinite blue and other red 5. Draw the sentences of green leaves' Enlightenment to life in the original text with wavy lines
- 3. Exercise of "if there is no dust" in Lesson 12 of Chinese for Grade 5 of PEP
- 4. If there is no dust!
- 5. Understanding of the original sentences in beauty over a hundred years She knows that only the flower of discovery and creation can have eternal beauty. So she is willing to let acid and alkali gnaw her soft hands and let the choking smoke wrinkle her beautiful forehead Tell me what you read and what you think of?
- 6. 18 across a hundred years of beautiful text main content, key sentence analysis
- 7. Why is the topic of beauty spanning a century called beauty spanning a century
- 8. What is the method used in Lesson 18 "beauty across a hundred years" of PEP (Volume 2, grade 6 of primary school)?
- 9. Answers to Feng Zikai's childhood reading questions
- 10. Feng Zikai's childhood reading comprehension
- 11. Answers to lesson 6 in Chinese exercise book
- 12. Economy is a virtue Every citizen has a sense and behavior of saving. The reason why the sense and behavior of saving is more important is that it is more common, more lasting and more effective. The government's policy and behavior can only benefit for a while, only when saving is internalized into every citizen's conscious behavior, This thrifty society naturally came into being. Being warm, kind, respectful, thrifty, yielding, diligent and thrifty have been the virtues of the Chinese nation since ancient times. But today, the implementation of the market economy has brought great wealth to the country and individuals. At the same time, the fine traditional virtues and style of "saving" the nation and the Communist Party of China have gradually been weakened, Today, to promote the construction of a conservation oriented society is not only the requirement of government work, but also the expectation of personal life style Saving, as a virtue, has two realms and levels for individuals: Saving Private Property and saving public property. Saving private property is to cherish the fruits of one's own labor, which is a kind of private virtue. Saving at this level is easy to achieve, but when a person has private material wealth to a certain extent, due to the difference of quality, it is difficult to achieve, It is not easy for some people to economize and cherish their wealth and the fruits of their labor. Moreover, the society can not interfere with the private morality of individuals, no matter from the perspective of moral or legal constraints. Because of this, many people have the mentality of "how I spend my own money anyway" when they are extremely extravagant and wasteful, It is a kind of public morality to cherish the public property and the collective fruits of common labor. Compared with the previous level, the level of saving is higher, but it is also more difficult to achieve. Here, we can only appeal: waste of public property is equal to waste of private property in essence. Because this public property is your own hard-earned money Today's developed countries have unparalleled wealth in developing countries, but in these developed countries, no matter the government, enterprises or individuals are actually very thrifty, saving even makes you have this impression: from the perspective of whether the government departments spend fiscal (taxpayer's) money, or the way enterprises and individuals spend their own money, Rich and developed countries are more like poor and backward countries, while those poor and backward countries are more like developed countries. For example, Toyota's output value today has reached hundreds of billions of dollars, and one company has surpassed several Guangdong provinces. But do you know that the employees there still use used copy paper as notes. Moreover, this is not an individual phenomenon, it is common for people, Let alone the government spending money, because they know that every penny is taxpayers' money. By contrast, our government, enterprises and even individuals are not ashamed. Not only do people not easily spend their own money, but also they dare not spend their public money. We are not so much spending our own money, let alone the public money, On the contrary, it doesn't matter when the economical society and the harmonious society will be As a virtue, economy has two realms for individuals. Which two words are used to summarize these two realms? 15. Why is the waste of public property equal to the waste of private property? 16. Please add an example of economy to paragraph 3 to make the argument more sufficient 17. Saving is a new topic. You must have many excellent saving behaviors. Please choose two of them and talk about the significance of doing so
- 13. There should be social drama, Ansai waist drum, great tragedy, in the center of the desert, gazelle flying, cat reading comprehension. The more the better
- 14. Answers to the matching exercise book of the people's education press of the people's Republic of China
- 15. Four seasons reading answers of comprehensive rain detection in the second volume of seventh grade Chinese exercise book
- 16. Is the system of equations x = 1 (1) y + 2 = 3 (2) a system of linear equations of two variables? Do the two equations of the system of linear equations of two variables have to contain two unknowns? Isn't a system of linear equations of two variables only composed of two linear equations of two variables?
- 17. If 12x2m − 1 − 8 ＞ 5 is a linear inequality of one variable, then M=______ ．
- 18. This year, 56 students in a class have subscribed to "junior high school students' Mathematics Learning". In the first half of this year, 25 boys and 15 girls have subscribed to the magazine. In the second half of this year, 26 boys and 25 girls have subscribed to the magazine, and 23 boys have subscribed to the magazine all year round. So the number of girls who have subscribed to the magazine only in the first half of this year is 25______ Name
- 19. (x+y)(x2-xy+y2)
- 20. Decomposition factor: (1) 2A (x-a) + B (A-X) - 3C (x-a) (2) (a ^ 2 + 1) ^ 2-4a ^ 2 (3) x ^ 2-2xy + y ^ 2 + X-Y