It is known that the domain of the function f (x) = x ^ 2-ax + 3 is the domain of (2,4) when a belongs to (2,6)
Segment:
A belongs to (2,4) range (7-2a, 19-4a)
A belongs to [4,6] range (3-A * * 2 / 4,19-4a)
.
okl.
RELATED INFORMATIONS
- 1. How many twin functions are there with y = 2x & sup2; + 1 and range {3,19}? If a series of functions have the same analytic expression, the same range of values, but different domain of definitions, then these functions are "twin functions" Can you make it clear?
- 2. Let a be a constant and a > 0,0=
- 3. Find the minimum value of the function y = cos ^ 2x + 2asinx-1, X ∈ [0,2 π), a ∈ R =
- 4. Let a be a constant and a > 1, 0 ≤ x ≤ 2 π, then the maximum value of F (x) = cos2x + 2asinx-1 is () A. 2a+1B. 2a-1C. -2a-1D. a2
- 5. The minimum value of the function y = sin ^ 2-cos ^ 2x is
- 6. Minimum value of function y = cos ^ 2x / 2-sin ^ 2x / 2
- 7. Function y = cos ^ 2x-sin ^ 2x minimum
- 8. If the function f (x) = (1 + √ 3 · TaNx) cosx, 0 ≤ x < π / 2, the maximum value of F (x) is as long as the answer
- 9. What is the original function of the square of cosx?
- 10. How to find the original function of 1 divided by 1 -- (the square of cosx) dcoxx
- 11. Given that f [x} = AX-1 {a > 0, a ≠ 1} has both the domain of definition and the range of value [1,2], what is the value of a
- 12. Judging the parity of function f (x) - f (- x)
- 13. Judge the parity of the following functions (1) f (x) = | 1 / 2x-3 | + | 1 / 2x + 3|
- 14. Judge the parity of (1) f (x) = 1 / 2x. (2) f (x) = - 2x + 5. (3) f (x) = X4 + x2-1. (4) f (x) = 2x3-x By the way, write down its domain
- 15. F (x) = x ^ 2 + 2x judge the parity of function
- 16. Try to discuss the parity of the function f (x) = x & # 178; - 2x + 3x > 0 = 0, x = 0 - X & # 178; - 2x-3x f(x)=x²-2x+3 x>0 =0 x=0 =x²-2x-3 x
- 17. F (x) = 2x & # 178; + 4, X ∈ [- 2,2]
- 18. How to judge whether the domain is symmetric about the origin? For example: for the function f (x) = 3tan (1 / 2 x - π / 3), when discussing the parity of F (x), why is the domain not symmetric about the origin?
- 19. Trigonometric function symmetry If the image of y = sin (x + a) + radical three cos (x-a) is symmetric about the Y axis, then the value of a is Why is it wrong to calculate with x = 0, y = plus or minus 2? The answer is a = k π - π / 6
- 20. Trigonometric function symmetry If f (x) = sin (π / 4 x + π / 6), G (x) is symmetric with respect to x = 1, then G (x) is obtained There is also an analytic expression of y = 3sin (π / 2x + π / 6) with respect to x = 2 π symmetry