Given that a, B are opposite numbers and CD are reciprocal, the absolute value of X is 1, the value of x 2 - (a + B + CD) x-cd is obtained Now!

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• 1. Given that a and B are opposite numbers, C and D are reciprocal numbers, the absolute value of X is 1, find the value of X2 - (a + B + CD) x-cd
• 2. It is known that a B is opposite to each other and C D is reciprocal to each other. The square of X is equal to 4. Try to find the value of x2 + (a + B + CD) x + (a + b) 2010 + (- CD) 2010
• 3. If a and B are opposite to each other, C and D are reciprocal to each other, and the absolute value of X is 1, find a + B + X + CD of X
• 4. The power series of sin (x) / X
• 5. In this paper, f (x) = (e ^ x-e ^ - x) / 2 is expanded into a power series of X, and its convergence interval is obtained
• 6. Expand f (x) = e ^ x into a power series about X-1
• 7. The function f (x) = e ^ - x ^ 2 is expanded into a power series of X to get the? Let's solve this problem,
• 8. Expansion formula of COS sin power series RT
• 9. Expansion of function into power series of X How to expand f (x) = D ((e ^ x-1) / x) / DX into a power series and what is the specific process?
• 10. Expand function into power series of X F (x) = 1 / 1 + X + x ^ 2, it's better to write the steps
• 11. A mathematical problem: given that AB is the opposite number, CD is reciprocal, e is the largest negative integer, how much is a + B + CD + e?
• 12. If we know that a and B are opposite to each other and C and D are reciprocal to each other, then A-CD + B=______ ．
• 13. Given that a and B are opposite numbers, C and D are reciprocal numbers, the absolute value of x = 2 m is not equal to N, and the value of a + B + X & # - CDX of M-N is calculated In the following row of small squares, except for the known number, each letter in the other small squares represents a rational number, and the sum of the rational numbers in any three continuous squares is known to be 23. The square is Q 12 t a R K 8. This is the question from the table horizontally: ① the value of Q + T + A + R + K; ② the value of Q and T; ③ after the solution of question ②, Please explain the arrangement rules of the numbers in the small square, and guess what the number 2011 in the small square should be? (2) insert four numbers between - 35 and 5, so that the distance between each of the six adjacent numbers is equal, then the sum of the four numbers is (). Thank you
• 14. Given that x2-4x + 4 and | Y-1 | are opposite to each other, then the value of the division of (x + y) by (x + y) is equal to?
• 15. It is known that: X & # 178; - 4x 4 and | Y-1 | are opposite numbers, then the formula [(x
• 16. The mass of an empty bottle is 100g, and the total mass of the bottle water is 600g when it is filled with water. Now we refit a kind of liquid, and the total mass of the bottle and liquid is 500g when it is filled, so we can calculate the density of this kind of liquid Specific data
• 17. There is an 8-meter-long tree in the zoo. Two monkeys have a tree climbing competition. When one of the bigger monkeys climbs to 2 meters, the other monkey climbs to 1.2 meters. At this speed, he climbs to the top of the tree and immediately comes down. The speed is the same as that of climbing the tree. How many meters from the ground do the two monkeys meet?
• 18. Do you want to write units in scientific notation? For example: a day has 8.64x10 quartic seconds, a year has 365 days, how many seconds in a year? The results are expressed by scientific notation Do you want to write the unit for the 7th power of 3.1536 times 10? Hurry, hurry, 10:40!
• 19. A question about the application of scientific notation: The beautiful earth we live on is a nearly circular sphere. Its radius is about 6.4 × 10 kilometers to the sixth power. If you take a trip, you can fly along the orbit for 20 days, which is equal to the radius of the earth. Please calculate how many kilometers you have to fly every day? (the result is expressed by scientific notation)
• 20. How to calculate a power that is not an integer, such as 2 ^ 1.4