Given a = {x | x2-3x + 20}, if a ∪ B = B, then the value range of A

RELATED INFORMATIONS

• 1. First simplify, then evaluate: 2x2 (x-3 / 1y & # 178;) + (- 2x + 1y & # 178;), where x = - 2, y = 2 / 3
• 2. If the square of 3x (2a + B + 1) + the square of 5Y (a-2b-1) = 10 is a quadratic equation with respect to X and y, find a-b
• 3. Square of factorization factor (x's square + 3x) - 8 (x's square + 3x) - 20
• 4. If the set a = {x | X & # 178; + 3x-4 & lt; 0, X ∈ r}, then what is the number of proper subsets of the set a ∩ Z,
• 5. A set a = {X & sup2; - 3x + 4 = 0, X ∈ r}, B = {x | (x + 1) (X & sup2; + 3x-4) = 0, X ∈ r}, and a proper subset P subset B
• 6. Given the set a = {x ∈ R | X & sup2; + 3x + 3 = O}, B = {x ∈ R | X & sup2; - 5x + 6 = 0}, a is contained in P and true in B, find the set P satisfying such condition
• 7. Given that the set a = {x belongs to R | ax2-3x + 2 = 0} (1), if a = an empty set, find the value range of real number a (2) is a single element set, find the value of a and set a (3) Finding the set M = {a belongs to R | A is not equal to an empty set
• 8. Given that there is only one element in the set a = {x | (A-1) x ^ 2 + 3x-2 = 0}, we can find the value of real number a
• 9. We know that the set a = {x belongs to R / ax ^ 2-3x + 2 = 0 The set a = {x belongs to R | ax ^ 2-3x + 2 = 0, a belongs to R}. 1. If a = empty set, find the value range of real number A. 2. If a is a single element set, find the value of real number a and a
• 10. Three sets a = {X / x ^ 2-3x + 2 = 0}, B = {X / x ^ 2-ax + A-1 = 0}, C = {X / x ^ 2-bx + 2 = 0}, if a is the proper subset of B, AUC = a is the real number a, does B exist? If yes, find out a, B. if not, explain the reason B is the true subset of A, I don't quite understand
• 11. The known set a = {x | x It's cub!!!! Not CR B!!! Don't get it wrong
• 12. If a = {x | x square + 3x-10
• 13. The function f (x) = 2aX ^ 2 + 4ax + 1 / 3 is defined as R, and the value range of real number a is calculated?
• 14. Given that the domain of definition of function y = radical X & # 178; - 2aX + 2 is r, find the range of real number a
• 15. Given the complete set I = R, set a = {x | x ^ 2 + 3x + 2 = 0}, B = {x | x ^ 2 + (M + 1) x + M = 0}. If CIA intersection B = Φ, find the value of M
• 16. Let f (x) = x2-3x + 1, then f (a) - f (- a) is equal to =?, Urgent,,
• 17. Given the function f (3x) = 3x + 2, then f (x) is equal to
• 18. If the intersection point of the image of function y = x + m and function y = NX + 2 is on the X axis, then Mn=————
• 19. If the points (1, m), (- 2, n) are all on the image of the function y = - x + 2, then the value of Mn is?
• 20. It is known that a set M is a set of functions f (x) satisfying the following two properties simultaneously ① F (x) is a monotone increasing function or a monotone decreasing function in its domain of definition; ② There is an interval [a, b] in the domain of F (x), such that the range of F (x) on [a, b] is [A / 2, B / 2] (1) Judge whether the function f (x) = √ x belongs to m? And explain the reason. If so, request the interval [a, b]; (2) If the function f (x) = √ (x-1) + T ∈ m, find the value range of real number t Be as detailed as possible