The equation AX ^ 2 + 2x + 1 = 0 of X has at least one negative real root, and the value range of a is obtained

A = 0, x = - 0.5, satisfied
When a is not equal to 0, the discriminant is > = 0
4-4a>=0 a0 1/a>0
Solution a has no solution
That is, as long as a

RELATED INFORMATIONS

1. Given the function f (x) = AX2 + BX + C, f (- 3) = f (1) = 0, f (0) = - 3, we can find the solution set of the equation f (x) = 2x
2. Is the root of an equation a set or an element?
3. Given that a, B and X are positive numbers and LG (BX) · LG (AX) + 1 = 0, the value range of AB is obtained
4. How many cubic centimeters is 15 cubic decimeters equal to
5. The third power of a + the third power of B=
6. What is 8.7 times 4.8 + 5 and 1 / 5 + 8 and 7 / 8?
7. It is known that the maximum value of quadratic function f (x) = (LGA) x 2 + 2x + 4 LGA is 3, and the value of a is obtained
8. When calculating the division with remainder, Xiao careless takes the divisor 126 as 158. The result quotient is larger than the correct result, but the remainder is exactly the same. Please write the correct division formula
9. 5 and 18 of 5 × (- 36) + 71 and 16 of 15 × (- 8) = - 2 - [- 4 + (1-3 of 2 × 0.6) / (- 3)] = - 1 - 5 × (- 36) + 71 × (- 8)= - 2 - [- 4 + (1-3 / 2 × 0.6) / (- 3)] = 1 - 1 - (1-0.5) × 1 / 3 × [2 - (9)]= 2001 power of - 4 - (- 9) × (- 1) + (4 / 9) / (16 / 9)=
10. When x is equal to what number, the values of formula 3x + 2 and X-10 are opposite to each other
11. The set a is composed of the solutions of the equation AX & sup2; - 2x + 1 = 0. If the set a is an empty set, the value range of the real number a is obtained X & sup2; is the square of X
12. If the solution of equation x2-5x + 6 = 0 and equation x2-x-2 = 0 is m, then the number of elements in M is () A. 1B. 2C. 3D. 4
13. On the solution of the equation x square + ax + B = 0 of X, when a and B satisfy what conditions, the solution of the equation contains one element? Two elements? It needs to be detailed
14. Why is it {0,1} Such as the title
15. The set of all the real roots of equation x's square-10x = 0
16. Let the square of equation x equal to the set of all the real roots of X be B
17. The set of all real roots of equation X-2 = 0
18. In mathematics of the second grade of junior high school, we find the real number k, so that the roots of the equation KX & # 178; + (K + 1) x + (k-1) = 0 about X are integers
19. Given the set a = {x | X & # 178; + 2x-8 = 0} B = {x | X & # 178; + kx-k = 0} if a intersects B = B, we can find the value range of real number K
20. Given the set a = {χ|χ & # 178; + 3 χ - 4 = 0}, B = {χ & # 178; + (a + 1) χ - A-2 = 0}, if a ∪ B = a, find the value of real number a