Seven knowledge points of Mathematics

1： The operation formula of an integral: 1. The degree of a monomial: in a monomial, the sum of the exponents of all letters is called the degree of the monomial. 2. In a polynomial, the degree of the item with the highest degree is called the degree of the polynomial. 3. The addition and subtraction method of an integral is essentially to merge the similar items in the integral. If there are brackets, you should first remove

RELATED INFORMATIONS

1. There are 20 chickens and 54 rabbits in total. Do you know how many chickens and rabbits each have
2. Simple calculation of 4.58 * 25.1 + 45.8 * 6.35 + 0.229 * 228
3. Answers to the supplementary exercises of Jiangsu Education Press
4. Honghong and Mingming had a math competition. They agreed to give 20 points for one right question and 12 points for one wrong question. Honghong and Mingming each calculated 10 questions and their total score was 208. Honghong got 64 points more than Mingming. How many questions did Honghong and Mingming get right?
5. In a triangle area ABC, where ∠ C = 90 ° and edge AB = 8m, BC = 6m, a rectangular pool defg is built in △ ABC, De is on AB, and DG = x is set. When x is, the pool defg area s is the largest
6. The original price of a TV set is 3500 yuan / set. During the Spring Festival, shopping malls carry out promotional activities, reducing the price by 7 / 1, and increasing the price by 4 / 1 after the activities. How much is the current price of this kind of TV
7. Thank you very much········ 1. In rectangles of the same size, use shadows to represent one third, two sixths and nine thirds. Can you find any relationship between them 2. Use 1,2,3,4 to form four fractions. The molecules of the four fractions are the same and the denominators are different. Compare their sizes 3. Fill in the appropriate score in brackets 24 min = () H 70 cm = () m 327 g = () kg 163 square decimeters = () square meters 15 minutes = () hours 235 kg = () tons 4. If the fractional unit is one in fifteen, the maximum true fraction is (), plus () such fractional units is the minimum prime number; if the minimum false fraction is (), plus () is the minimum composite number 5. The denominator of a fraction is four times more than the numerator. 3. The sum of numerator and denominator is 23. What is the fraction?
8. Given the function f (x) = sin (Wx + φ) (W > 0, - π / 2 ≤≤ π / 2), the distance between two adjacent highest and lowest points on the image is 2 √ 2 If f (x) passes through point (2, - 1 / 2), then f (x)=
9. Given the function f (x) = sin (2 ω X - π / 6) - 4sin ^ 2 ω x + 2 (ω > 0), the distance between the two highest points of the image is π, Supplement: 1. Find monotone interval and increasing interval of function f (x); 2. Find the range of function f (x) on [0, π / 2]
10. It is known that the function f (x) = sin (ω x + ϕ) (ω > 0, 0 ≤ ϕ≤ π) is even function, and the distance between two adjacent highest points on the image is 2 π. (I) find the analytic expression of F (x); (II) if α∈ (− π 3, π 2), f (α + π 3) = 13, find the value of sin (2 α + 5 π 3)
11. If the sum of three consecutive even numbers is 3a, then the smallest number is ()
12. PEP fifth grade volume 1 mathematics Chapter 4 simple equation 68 page 11 questions
13. A measuring cylinder containing 300 ml of water. After putting three steel balls with equal radius, the water surface rises to 360 ml. what is the volume of each steel ball Cubic decimeter?
14. 1: In the exam again, there are m students who get 90 points and n students who get 80 points. What is the average score of the two groups_______ Points? 2: When a is equal to 1, the value of fraction 3A minus 4 / a plus 2 is_________ ? 3: When the value of minus 3 of fraction x + 5 is a positive number, the value range of X is_____________ ? 4: If the fraction 2x minus X by 4 is meaningless, then x is equal to X________ ?
15. Number rule 2,4,8,14,26,48,88, what's the next number
16. The last page of mathematics book (formula is also required)
17. (1/8+1/24+1/48+1/80+1/120+1/168+1/224)*64=
18. Uncle Li has 160 chickens and five eighths of ducks. How many chickens and ducks are there? How many more chickens than ducks?
19. Why do humans have a special love for the moon
20. The greatest common factor of 54 and 36