Given that the image of quadratic function y = ax & # 178; + BX + C passes (1,0), and a > b > C, then the value range of C / A is?

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• 1. If the vertex of the image of quadratic function f (x) = - x ^ 2 + 4x + C is on the X axis, then the value of C is
• 2. As shown in the figure, let the image of quadratic function y = ax & # 178; + BX + C intersect at two points AB, and intersect with y axis at point C, if AC = 8, BC = 6, ∠ ACB = 90 °
• 3. The image of quadratic function y = x ＾ 2 - (a + 2) x + 2A (a > 0) intersects with X-axis at two points a and B, intersects with Y-axis at C, and the area of △ ABC is 3~
• 4. Given that the image of quadratic function y = AX2 + BX + 4 intersects with X axis at a and B, two points intersect with y axis at C angle ACB = angle ABC AB = 5, find the analytic expression of the quadratic function
• 5. Urgently seeking the image of quadratic function y = ax ^ 2 + BX + A ^ 2 + B (a is not equal to 0)
• 6. The graph of quadratic function y = AX2 + BX + C is shown in the figure, then the error in the following relation is A.a＜0 B.c＞0 C.b2-4ac＞0 D.a+b+c＞0 The opening direction is downward, the symmetry axis is x = - 1, and the intersection point with y axis is in the positive half axis
• 7. As shown in the figure, it is a part of the graph of quadratic function & nbsp; y = AX2 + BX + C (a ≠ 0). The following propositions are given: ① a + B + C = 0; ② b > 2A; ③ two of AX2 + BX + C = 0 are - 3 and 1 respectively; ④ a-2b + C > 0. The correct proposition is () A. ①②B. ②③C. ①③D. ①②③④
• 8. It is known that f (x) is an odd function defined on R, and f (1) = 1. If the image of F (x) is shifted one unit to the right, the image of an even function is obtained, Then f (1) + F (2) + F (3) f (4) + F (2011) is equal to
• 9. It is known that f (x) is an even function on R, f (0) = 2. If the image of F (x) is shifted one unit to the right, then the image of an odd function is obtained. Then the value of F (1) + F (3) + F (5) + F (7) + F (9) is () A. 1B. 0C. -1D. −92
• 10. It is known that f (x) is an even function on R. if the image of F (x) is shifted one unit to the right, then the image of an odd function is obtained. If f (2) = - 1, then f (1) + F (2) + F (3) + +The value of F (2011) is () A. - 1B. 0C. 1D. Not sure
• 11. If the image of function f (x) and the image of function g (x) = (0.5) ^ X are symmetric with respect to the straight line y = x, then the monotone decreasing interval of F (2x-x ^ 2) is?
• 12. If the image of F (x) and G (x) = (12) x is symmetric with respect to the line y = x, then the monotone increasing interval of F (4-x2) is______ ．
• 13. Given that the image of the function f (x) is symmetric with respect to the y-axis, and the interval is in (- ∞, 0), if x = - 1, f (x) has a minimum value of 3, then in the interval (0, + ∞), if x=__ When, F (x) has the most__ The value is__
• 14. If the image of the function f (x) = (m-1) x2 + 2mx + 3 is symmetric about the Y axis, then the maximum and minimum values of F (x) in the interval [- 2, - 1] are respectively
• 15. Given that the function f (x) = (AX2 + x) - xlnx increases monotonically on [1, + ∞), then the value range of real number a is______ ．
• 16. Given the function f (x) = xlnx, if f (x) > = A-1 for all x > = 1, find the value range of real number a
• 17. If f (x) = cosx, (− π 2 ≤ x < 0) SiNx, (0 ≤ x < π), then f (− 15 π 4) is equal to () A. 22B. 1C. 0D. −22
• 18. Let f (x) be a function of R with a minimum positive period of 3 π / 2, if f (x) = cosx, (- π / 2 ≤ x0) SiNx, (0 ≤ x)
• 19. Let f (x) be a function with the domain R and the minimum positive period 52 π, and f (x) = SiNx (0 ≤ x < π) cosx (− π < x < 0), then f (− 114 π)=______ ．
• 20. Given the function f (x) = f '(π / 2) SiNx + cosx, then the value of F (π / 2) is Sorry, wrong. F (x) = f '(π / 2) SiNx + cosx. It's derivative