When x = 3, the minimum value of y = - 1, and the image is over (0,7), the analytic expression of quadratic function of Y with respect to X is obtained

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• 1. Given that the image of a quadratic function passes through a point (0,1), and when x = - 1, there is a minimum value of - 2, find the analytic expression of the quadratic function
• 2. The image passes through a (- 1,0), B (3,0), and the function has a minimum value of - 8. What is the analytic expression of this quadratic function?
• 3. Review and practice of the next quadratic function in mathematics of grade 9 published by Jiangsu Education Press
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• 7. Quadratic function in Senior High School It is known that the parabola y = (m-1) x ^ 2 + (m-2) X-1, (m ∈ R) (1) If the sum of the reciprocal squares of the two unequal real roots of the equation (m-1) x ^ 2 + (m-2) X-1 = 0 is greater than 2, the value range of M is obtained (2) If the parabola intersects the x-axis at points a and B, intersects the y-axis at point C, and the area of △ ABC is equal to 2, try to find the value of M
• 8. It is known that the quadratic function f (x) satisfies the conditions f (0) = 1 and f (x + 1) - f (x) = 2x. (1) find f (x); (2) find the maximum and minimum of F (x) in the interval [- 1, 1]
• 9. Give a typical example of classification discussion of quadratic function in Senior High School To solve the process This is too simple, isn't it~~~~~~
• 10. A problem of quadratic function in junior high school Yingxian bridge, rebuilt in 1844, is located on the ancient trunk road between Zhejiang and Fujian. According to taoshuwu village, 15km southeast of Xinchang County, the bridge is a single hole parabolic stone arch bridge with smooth arch. The span and height of the arch are known to be 15.6m and 7.7m respectively. An appropriate plane rectangular coordinate system is established and the quadratic function relationship corresponding to the parabola is obtained
• 11. When x = 3, the minimum value of y = - 1, and the image is over (0,7), the analytic expression of quadratic function about X is obtained
• 12. It is known that the vertex coordinates of the image of the quadratic function y = x2 + BX + C are (1, - 4), and the intersection point with the Y axis is a.1. Find the relationship of the quadratic function and the point a coordinates (3) If two non coincident points whose coordinates are (m, n) and (n, m) are on the image of the quadratic function, the value of M + n is obtained (4) If the quadratic function intersects with the negative half axis of X axis at point B, C is a point on the function image, D is a point on X axis, when the quadrilateral with a, B, C, D as the vertex is a parallelogram, please write the area of the parallelogram directly The key is the fourth question~
• 13. A point of intersection (6,0) between the image of quadratic function and x-axis, and the vertex is (4, - 8), a point of intersection (6,0) between the image of quadratic function and x-axis,
• 14. Given the quadratic function y = a (x + k) 2 + K, no matter what the value of K is, the vertex of the function image is always in the A. Y = X. B. y = - X. C. X axis. D. Y axis, friendly tips; do not answer, to the whole process Oh!
• 15. How does the value of H and K of quadratic function affect the image position
• 16. Which coordinates do a, B and C of y = ax ^ 2 + BX + C in quadratic function image represent?
• 17. How to calculate the value range of mathematical quadratic function
• 18. Quadratic function [value range] Given the quadratic function [y = x & sup2; - 4x-3], if - 1 ≤ x ≤ 6, then the value range of Y is_________ .
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