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There is a point P on the number axis and its coordinate is X. if the distance between the known point P and the origin is less than 8, then x is X
-8＜x＜8
RELATED INFORMATIONS
- 1. It is known that the eccentricity of the ellipse x ^ 2 / A ^ 2 + y ^ 2 / b ^ 2 = 1 (a > b > 0) is √ 3 / 2, and the distance from the straight line passing through two points a (a, 0) B (0, - b) to the origin is four fifths of the root sign 5. The standard equation of the ellipse is solved
- 2. It is known that the eccentricity e of ellipse x ^ 2 / A ^ 2 + y ^ 2 / b ^ 2 (a > b > 0) is √ 6 / 3, and the distance between the straight line passing through points a (0, - b) and B (a, 0) and the origin is √ 3 / 2 (1) The equation of finding ellipse (2) Given the fixed point E (- 1), if the line y = KX + 2 (K ≠ 0) intersects the ellipse at two points c and D, ask: is there a value of K to make the circle with diameter CD pass through point e? Please explain the reason If it's right, answer the second question. If it's not right, write it all, E (- 1,0), sorry, I haven't finished
- 3. It is known that the eccentricity of ellipse x ^ 2 / A ^ 2 + y ^ 2 / b ^ 2 = 1 (a > b > 0) e = √ 6 / 3, and the distance between the line passing through points a (0, b) and B (a, 0) and the origin is √ 3 / 2 Given the fixed point E (- 1,0), if the line y = KX + 2 (K ≠ 0) intersects the ellipse at two points c and D, ask: is there a value of K to make the circle with diameter CD pass through point e? Please explain the reason
- 4. It is known that the eccentricity e of ellipse C: x ^ 2 / A ^ 2 + y ^ 2 / b ^ 2 = 1 (a > b > 0) is 1 / 2, and the distance from origin o to straight line X / A + Y / b = 1 is d = (2 √ 21) / 7 The equation of ellipse is x ^ 2 / 4 + y ^ 2 / 3 = 1 Solution: make a straight line through point m (√ 3,0) and intersect ellipse C at two points P and Q, and find the maximum area of △ OPQ
- 5. On the number axis, which side of the origin is the point representing the number 6, and the distance to the origin is several unit lengths; the distance from the point representing the number 6 to the point representing the number-8 is Several units of length
- 6. On the number axis, the distance to the origin is the root sign, and the number of 6 is
- 7. On the number axis, the point of - 5 is at the beginning of the origin___ Side, the distance from the origin is___ . the distance from the origin is 4 units of length__ Yes, they are___ On the number axis, a point five units in length away from the point representing - 2 is the same as the number represented____ ? Simplification: 1 - 2=____ ? -The absolute value of 4.7 is____ The number whose absolute value is 3 and 1 / 5 is___ ? The number with the smallest absolute value is__ The number whose absolute value equals itself is____ ? Given x = 8, y = - 2, find the value of x-4, y Comparison size: 1 + 5___ - 6; 1 - 100___ -（-101）. All integers greater than - 3 and less than 2 are___ ? Fill in the appropriate integer in the following box to make the formula true: - 3 ＜ mouth ＜ - 1.5 ＜ mouth ＜ 0 ＜ mouth ＜ 2 Given a = 4, B = 3 and a < B, try to find the value of a and B
- 8. Given point P (2, - 1), what is the maximum distance between point P and the origin Why is the maximum distance OP?
- 9. If the point P (2, - 1) is known, the equation of the line L which passes through the point P and has the largest distance from the origin is obtained, and the maximum distance is obtained;
- 10. Find the trajectory equation of the point with the same distance between two lines 2x-y-1 = 0 and 4x-2y + 9 = 0
- 11. What is the distance from the point P (- 3, - 4) to the X axis, to the Y axis, and to the origin
- 12. Given 2x + 3y-4z = 0, 3x + 3Y + 5Z = 0, find the value of X + y + X / X-Y + Z
- 13. The distance from the origin to the line x + 2y-5 = 0 is___ ．
- 14. Find a point P on the line x + 2Y = 0 so that its distance to the origin is equal to the distance of the line x + 2y-3 = 0
- 15. Coordinate origin to line 3x-2y + 1 = 0 to distance
- 16. Point a (- 1, - 2), B (3,6), find point P (x, y) on the straight line L: 3x + 3y-10 = 0, so that the distance difference between point 1 P and point a, B is the largest Answer (- 101 / 6121 / 6) detailed process
- 17. Find a point P on the straight line 3x-2y + 6 = 0 so that the distance from it to a (- 1,1) and B (3,0) is equal
- 18. Write the program of "input a positive integer m, judge whether it is prime" in C language
- 19. Simple calculation of 8 out of 21 times 25 out of 18 times 63
- 20. If x satisfies 2 / 3 [3 / 2 (x / 4-1) - 2] - x = 2, then does x have a square root? Does X have a cube root? If so, find out the reason separately It's better to be more detailed. It's urgent