If f (x) = (x + a) cubic has f (1 + x) = - f (1-x) for any real number, then f (2) + F (- 2)=

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• 1. Let f (x-1 / x) = the square of X divided by the fourth power of 1 + X
• 2. Let f (x) = x power of 4 divided by (x power of 4 + 2), if 0
• 3. What is the sum of all elements in the set a = {x ︱ X & # 178; - (a + 2) x + A + 1 = 0, X ∈ r}
• 4. Given the set a = {a | x = a + X / X & # 178; - 2}, and the set B = {x | x + A / X & # 178; - 2 = 1}, then can the set B be a single element set? If the set a can be represented by enumeration, if not, please explain the reason Set a {- 9 / 4 ± √ 2} I can only answer: - 9 / 4 ± √ 2? I'm really powerless
• 5. Let f (x) = x2 + ax + B, a = {x | f (x) = x} = {a}, and the set composed of elements (a, b) be m
• 6. The set M = {m} composed of the first 2n positive integers belongs to n | 1
• 7. A set of all positive integers less than 5
• 8. Known sets {1,2}, {3,4,5,6,}, {7,8,9,10,11,12,13,14} Where the nth set consists of 2 ^ n consecutive positive integers, and each The largest number in the set and the smallest book in the next set are continuous integers. It is known that the largest number in the nth set is an (1) Finding an expression (2) If the sequence {BN} satisfies BN = [2 ^ (n + 1)] / [an * a (n + 1)], and a
• 9. Inequality 3x + 6
• 10. For a given positive integer n (n ≥ 6), set a is composed of the sum of five consecutive positive integers not greater than N, and set B is composed of the sum of six consecutive positive integers not greater than n If the number of elements of a ∩ B is 2013, then the maximum value of n is?
• 11. F (x) = ㏒ {[x power of 1 + 2 + x power of 3 + The x power of + (n-1) + the x power of n × a] / N}, a is a real number , n is any given positive natural number and N ≥ 2, if f (x) is meaningful when x ∈ (- ∞, 1], the value range of a is obtained
• 12. If a ∈ a, then 1 + A1 − a ∈ a, then the product of all elements in a is () A. 1b. - 1C. ± 1D. It is related to the value of A
• 13. Let a be a set of real numbers and satisfy the following conditions: if a belongs to a, then 1 / 1-A belongs to A. prove (1) if 2 belongs to a, then there must be two other elements in a (2) set a can't be a single element set. Thank you very much
• 14. Let the elements of a set be real numbers and satisfy: 1.1 ∈ a; 2. If a ∈ a, then 1 / (1-A) ∈ a (1) If 2 ∈ a, try to find the set a (2) If a ∈ a, try to find the set a (3) Can set a be a single element set? If so, find the set. If not, explain the reason To correct the mistake, the title "1.1 ∈ a" should be "1 &; a".
• 15. If a belongs to real number set and (1-A) / (1 + a) belongs to {a}, then a =?
• 16. Let a be a set of real numbers. If a belongs to a, then 1 / 1-A belongs to a and 1 does not belong to A. It is proved that if a belongs to a, then 1-1 / a belongs to a
• 17. If the set {x | x + a = a | x |, X ∈ r} is a single element set, then the value range of real number a is______ ．
• 18. Given the set a = {x | x ＜ - 1 or X ＞ 2}, B = {x | 4x-p ＜ 0}, if AB, the value range of real number P
• 19. Given the set a = {xiax ^ 3 + x ^ 2-x = 0}, if the set a is a single element set, then the value range of real number a is_______ . 1. Given the set a = {xiax ^ 3 + x ^ 2-x = 0}, if the set a is a single element set, then the value range of real number a is_______ . 2. Given the set a = {xiax ^ 2 + X + 1 = 0, X ∈ r}, and a ∩ {XIX ≥ 0} = & # 8709;, then the value range of real number a is --.
• 20. Given the set a = {x | AX3 + ax2-x = 0}, if the set a is a single element set, then the value range of real number a is______ ．