Given the function y = x2-4x-5, find the range when 1 x belongs to {- 10 1 2 3 4} and 2 x belongs to the range when [- 2 1]

(1) 2 is the minimum and - 1 is the maximum

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1. Let f (x) = (SiNx) ^ 4-sinxcosx + (cosx) ^ 4, then the range of F (x) is
2. If f (SiNx) = 2-2cosx, then f (cosx) is equal to A、2-sin2x B、2+sin2x C、2-2cosx D、2+2cosx
3. If SiNx = 2cosx, then SiNx cosx / SiNx + cosx=_____
4. Find the maximum value of F (x) = (√ 3) SiNx + cos2x
5. F (SiNx) = cos2x, the maximum value of F (x)
6. If f (x + π) = f (- x), and f (x) = f (- x), then f (x) may be? Sin2x or cosx or sin [x] or [SiNx]
7. (SiNx + cosx) / (SiNx cosx) = 3 find sin ^ 2 (x) + sinxcosx
8. Why sin2x = 2sinx * cosx?
9. Sin2x-2sinx + cosx-1 = 0, solution X
10. The solution of sin2x-2sinx + cosx-1 = 0
11. The range of function y = - x ^ 2 + 4x + 1 is______ .
12. Find the function range: y = 2x-4x-2, X belongs to (- 1 / 2,2)
13. What is the range of the function y = negative x + 4x + 1, X ∈ (0,3)
14. It is known that SiNx + cosx = - 1 / 5 (135 °)
15. Finding f (cosx) by knowing f (SiNx) = sin3x RT
16. If f (SiNx) = sin2x-sin3x, then f (cosx)= I just learned some formulas of induction function,
17. The known function f (x) = x ^ 2 + C..] Let f (x) = x ^ 2 + C and f [f (x)] = f (x ^ 2 + 1), where C is a constant Let g (x) = f [f (x)] and find the analytic expression of G (x)
18. It is known that f (x) = | x + 1 | + | x + 2 | + +|x+2007|+|x-1|+|x-2|+… +|X-2007 | (x ∈ R), and f (a2-3a + 2) = f (A-1), then the value of a has () A. 2 b. 3 C. 4 d. countless
19. If f (x) = the square of X + BX + C, and f (1) = 0, f (3) = 0, find the value of F = (- 1) Use Chinese characters to express the idea of solving the problem, write it clearly, and adopt it immediately if it is correct!
20. What does the mathematical function y = f (x) mean?