If the even function f (x) is an increasing function in the interval [3,7], and the minimum value is 5, it is judged that f (x) is in the interval [- 7, - 3]

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• 1. If the odd function f (x) is an increasing function in the interval [3,7] and the maximum value is 5, then f (x) is () A. Decreasing function and minimum is - 5B. Increasing function and maximum is - 5C. Decreasing function and maximum is - 5D. Increasing function and minimum is - 5
• 2. If the even function f (x) is known to be an increasing function in the interval [3,7], and f (3) = 5, then f (x) is a? Function in the interval [- 7-3], and the minimum value is?
• 3. If the even function f (x) is an increasing function in the interval [2,4] and the minimum value is 5, then f (x) is an increasing function in the interval [- 4, - 2]_ Function and is_ Maximum value
• 4. It is known that the function f (x) = x ^ 2-bx-3a + 6 is an even function, and its domain of definition is [a-2,2a + 1]. Find the range of (x) According to the past experience, a = x / 4, B = 3 / a (root x), there are 10000 yuan of capital invested in a and B, and 10000 yuan of capital invested in a and B. in order to obtain the maximum profit, we should pay more attention to the following aspects: 1, How many ten thousand yuan will be invested in each of the two commodities? What is the maximum profit?
• 5. If f (x) = ax ^ 2 + BX ^ 2 + C is even function, then f (x) = ax ^ 3 + BX ^ 2 + CX is even function Given that the function f (x) = ax ^ 2 + BX ^ 2 + C (a is not equal to zero) is even, then f (x) = ax ^ 3 + BX ^ 2 + CX is () A. Odd function B. even function C. both odd and even function D. non odd and non even function And why?
• 6. F (x) = ax ^ 3 + BX + C (a is not equal to 0) is an odd function, the tangent of its image at (1, f (1)) is parallel to the straight line 6x + y + 7 = 0, and the minimum value of F '(x) is - 12 1. Find the value of a, B, C 2. Find the monotone increasing interval of function f (x), and find the maximum and minimum of function f (x) on [- 1,3]
• 7. Let t not be equal to 0, and point P (T, 0) be a common point of the image of functions f (x) = x ^ 3 + ax and G (x) = BX ^ 2 + C. The images of two functions have the same tangent at point P 1. Denote a, B, C with T 2. If the function y = f (x) - G (x) monotonically decreases on (- 1,3), find the value range of T Please give us a detailed explanation,
• 8. Let f (x) = ax ^ 3 + BX + C (a is not equal to 0) be an odd function, the tangent of its image at point (1, f (1)) is perpendicular to the straight line x-6y-7 = 0, and the minimum value of derivative f '(x) is - 12 Ask for: 1) The value of a and B I want to ask what is the explanation for the lower tangent being perpendicular to the straight line x-6y-7 = 0? How can we calculate the slope of x-6y-7 = 0 to be 1 / 6? How can we get f '(1) = 3A + B = - 6? I don't quite understand these questions,
• 9. Given the function f (x) = X3 + AX2 + BX + C, the tangent l of the curve y = f (x) at the point x = 1 is only the fourth quadrant, and the slope is 3, and the distance from the origin of the coordinate to the tangent L is 1010, if x = 23, y = f (x) has extremum. (1) find the value of a, B, C; (2) find the maximum and minimum value of y = f (x) on [- 3, 1]
• 10. Let f (x) = AX2 + BX + C (a ≠ 0), y = f (x) pass through the point (0, 2A + 3), and the tangent at the point (- 1, f (- 1)) is perpendicular to the Y axis. (1) use a to represent B and C respectively; (2) when B · C reaches the minimum, find the monotone interval of the function g (x) = - f (x) · ex
• 11. If f (x) is an increasing function in the interval [a, b], and the minimum value is 2, f (x) is an even function, then f (x) is the minimum value in the interval [- A, - b]=
• 12. Given that f (x) = AX2 + BX is an even function defined on [A-1, 2A], then the value of a + B is () A. −13B. 13C. −12D. 12
• 13. If f (x) = AX2 + BX + C is an even function in the interval [a, C], then the monotone increasing interval of F (x) is
• 14. It is known that f (x) is an odd function on R. when x is greater than or equal to 0, f (x) = 2 to the power of X + 2x + B, then f (- 1) is an important process
• 15. It is known that the function f (x) = ax to the third power + 2x to the second power + bx-4 has a maximum value - 4 when x = - 1 (1) Find the analytic expression of y = f (x), and find the monotone interval (2) Solving inequality f '(x) > ax + A
• 16. If the function y = sin (2x + φ) (0 is less than or equal to φ, less than or equal to π) is an even function on R, then= The function y = sin (2x + φ) is an even function on R, Then sin (- 2x + φ) = sin (2x + φ) The expansion is: sin φ cos2x cos φ sin2x = sin φ cos2x + cos φ sin2x So cos φ sin2x = 0. Cos φ = 0, φ = π / 2 "Ask," how is it expanded: sin φ cos2x cos φ sin2x = sin φ cos2x + cos φ sin2x "
• 17. If the function y = sin (x + a) is even, then the possible value of a is?
• 18. If the function y = sin (x + Q) (0 ≤ Q ≤ PI) is even on R, what is the value of Q
• 19. The function y = sin (x + β) (0 ≤ β ≤ π) is an even function on R. how to find the value of β?
• 20. If the function y = sin (x + &) (0 ≤ & ≤ π) is an even function on R, then what is the number of