If we randomly take a number a in the interval [- 5, 5], then we just make 1 be a solution of the inequality 2x2 + ax-a2 < 0 about X, and the probability of its solution is 0______ ．

This problem is a geometric probability problem, and the measure is length. By making 1 be inequality 2x2 + ax-a2 < 0 about X, we can get: 2 × 12 + a × 1-a2 < 0 {a ＜ - 1 or a > 2

RELATED INFORMATIONS

1. If the absolute value of the difference between a number and 2 is equal to the opposite of the difference between it and 2, then what is the range of the number?
2. If any real number a is taken in the interval (- 1,1) and any real number B is taken in the interval (0,1), then the probability of the intersection of the line ax by = 0 and the circle (x-1) 2 + (Y-2) 2 = 1 is () A. 38B. 516C. 58D. 316
3. In the interval [0,1], take any two numbers a and B, and the probability of two real numbers of equation x2 + ax + B2 = 0 is () A. 18B. 14C. 12D. 34
4. If the real numbers x and Y belong to [0,1], then the probability that the square of X + the square of Y is greater than 1 is zero
5. Take any two real numbers x, y in the interval [0,1], and calculate the probability of the event "x ^ 2 + y ^ 2 > 1 is constant"
6. If the real numbers x and y satisfy (x ^ 2 + y ^ 2 + 1) (x ^ 2 + y ^ 2-4) = 0, find the value of x ^ 2 + y ^ 2
7. It is known that the line ax-y = 1 intersects with the curve X square-2 * y square = 1 at two points P and Q. it is proved that there is no real number a such that the circle with PQ as the diameter crosses the origin
8. If the straight line ax + by = 1 and the circle x ^ + y ^ 2 = 1 intersect at two points a and B (where a and B are real numbers), and the angle between OA and ob is an acute angle (o is the coordinate origin), then the area enclosed by the trajectory of point P (a, b) is
9. No matter what the real number of a is, the circle x2 + y2-ax-a-1 = 0 passes a fixed point. What the coordinates of the fixed point are, it means that X2 is the square of X, and Y2 is the same
10. Given that a straight line passes (- 1,0) point, a straight line and a circle: (x-1) ^ 2 + y ^ 2 = 3 intersect at two points a and B, what is the probability of chord length AB > = 2?
11. If we randomly take a number x in the interval [0, π], then the probability of the event "SiNx ≥ cosx" is () A. 14B. 12C. 34D. 1
12. If we take a number x randomly in the interval (0, π), the probability of the event "SiNx + root 3cosx ≤ 1" is zero
13. If we take a random number x in the interval [0, π], then the probability of the event SiNx + 3cosx ≤ 1 is 0______ ．
14. If two numbers are randomly taken out in the interval (0, 1), the probability that the sum of the two numbers is less than 65 is zero______ ．
15. If two numbers are randomly taken out in the interval (0, 1), the probability that the sum of the two numbers is less than 56 is zero______ ．
16. If two numbers are randomly taken out in the interval (0, 1), the probability that the sum of the two numbers is less than 65 is zero______ ．
17. If two numbers are randomly taken out in the interval (0, 1), the probability that the sum of the two numbers is less than 56 is zero______ ．
18. The triangle ABC is an isosceles triangle with the angle BAC = 70 ° and the semicircle with the diameter AB intersects at point D and BC at point E The degree of arc ad, Arc de and arc be A is on the top, B is on the left, C is on the right, D is on AC, e is on BC
19. As shown in the figure, it is known that △ ABC is inscribed in circle O, e is the midpoint of arc BC, and AE intersects BC in D Why ∧ CBE = ∧ BAE?
20. As shown in the figure, AB is a fixed length line segment, the center O is the midpoint of AB, AE and BF are tangent points, e and F are tangent points, satisfying AE = BF. Take point G on EF, and point G is the extension line of tangent intersection AE and BF at points D and C. when point G moves, let ad = y, BC = x, then the functional relationship between Y and X is () A. Positive proportion function y = KX (k is constant, K ≠ 0, X ＞ 0) B. primary function y = KX + B (k, B is constant, KB ≠ 0, X ＞ 0) C. inverse proportion function y = KX (k is constant, K ≠ 0, X ＞ 0) d. quadratic function y = AX2 + BX + C (a, B, C is constant, a ≠ 0, X ＞ 0)