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Find the square of x value (4x + 1) in the following formula - 1 = 7 / 9
(4x + 1) ² = 16 / 9
4X + 1 = ± 4 / 3
X = - 7 / 12, x = 1 / 12
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- 1. X ∈ (0,1 / 4), then the maximum value of the square (1-4x) of y = x is-----
- 2. If x.y satisfies x square + y square-4x + 1 = 0, find the maximum value of 3 / x, Y-X minimum value, x square + y square maximum value
- 3. If x is greater than 0, then the maximum value of X squared + 2 / 4x is 0
- 4. The maximum value of the square + 9 of the function y = x / 4x is What is the maximum value of the function y = x / {4 (square of x) + 9} (x > 0)? If 2a5 + 3a7 + 2a9 = 14, then S13 is equal to? It is known that the equation {x power of e} (SiNx + cosx) - a = 0 has a solution on the interval (0, π), then the value range of real number a is?
- 5. The maximum value of the function y = - x-4x + 9 is
- 6. The maximum value of the function f (x) = - x squared + 4x-7 is
- 7. The maximum value of quadratic function y = - 2x2 + 4x-9 is () A. 7B. -7C. 9D. -9
- 8. X square = 4x by factorization We use the factorization to solve the problem (1) 0xsquare = 4x (2) Xsquare - 2x + 1 = 4 (3) Square of 9 (x-1) = 4x square
- 9. Find X by the square of 4x + 4x + 1 = 0
- 10. The square of X - 4x + 1 = 0, find X
- 11. How to solve (x + 1) square-2 (x-1) less than or equal to 4x
- 12. How to solve the problem that minus x square plus 4x equals 3
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- 16. It is proved by collocation method that the value of - 4x + 27 is greater than zero and the value of - 6x & # 178; + 24x-25 is less than zero, It must be proved by matching method!
- 17. It is proved that the value of - x ^ 2 + 4x-5 is always less than zero
- 18. It is proved that the square of - x + 6x_ The constant value of 10 is less than zero
- 19. It is proved that: (1) the value of - (x square) + 6x-10 is always less than zero; (2) the value of 4 (x square) - 12x + 10 is always greater than zero
- 20. It is proved that the value of - 3x & # 178; + 12x + 6 is always less than 0 Topics such as questions, the process should be detailed