![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
It is known that the center of the ellipse is at the origin and the focus is on the x-axis. Through its right focus F 2, make a straight line L with an inclination angle of, intersect the ellipse at M and n. The sum of the distances between M and N and the right guide line of the ellipse is, and the distance between its left focus F 1 and the straight line L is
1. When the focus is on the X axis, the standard equation is: x ^ 2 / A ^ 2 + y ^ 2 / b ^ 2 = 1 (a > b > 0) focus coordinate F1 (- C, 0), F2 (C, 0): B ^ 2 = a ^ 2-C ^ 2, the right directrix equation is x = a ^ 2 / C2, let the equation of line l be y = K (x-C) (passing through F2 point), k = Tan, the distance between the tilt angle F1 and line l can get an equation... 1m, n two points
RELATED INFORMATIONS
- 1. In the rectangular coordinate plane, the angle between the line between the point P (4.1) and the origin O and the positive half axis of the x-axis is α
- 2. It is known that in the semicircle AOB, ad = DC, ∠ cab = 30 °, AC = 2 times root sign 3, finding the length of AD, etc For help, add 447341718 to the picture,
- 3. As shown in the figure, in the semicircle AOB, ad = DC, ∠ cab = 30 °, AC = 23, the length of ad is calculated
- 4. It is known that AB in semicircle o is the diameter ad = DC ∠ cab = 30 ° AC = 3 root sign 3, and the length of ad is calculated Don't use sin to solve the problem that we didn't learn
- 5. AB is the diameter of semicircle o, C is the point on semicircle o which is different from a and B, CD ⊥ AB, perpendicular foot is D, ad = 2, CB = 4 * radical 3, then CD = -? The root number can't be typed = =, by the way, how to type the root number--
- 6. As shown in the figure, in △ ABC, ab = AC, the semicircle o with AC as the diameter intersects AB and BC at points D and e respectively. (1) prove that point E is the midpoint of BC; (2) if ∠ cod = 80 °, calculate the degree of ∠ bed
- 7. As shown in the figure: in △ ABC, the semicircle o with ab as the diameter intersects AC BC at the point de. prove that the triangle ode is an equilateral triangle
- 8. As shown in the figure, in the triangle ABC, AB is equal to AC, and the semicircle o with AC as the diameter intersects AB and BC at points D and e respectively 2. If the angle cod = 80 degrees, find the degree of the angle bed
- 9. Known: as shown in the figure, take one side BC of triangle ABC as the diameter to make a semicircle, intersect AB at e, pass through e to make a semicircle, the tangent of O is just perpendicular to AC, try to determine the size relationship between BC and AC, and prove your conclusion The graph is a regular triangle, the upper corner is C, the left corner is B, the right corner is a, the tangent line is perpendicular to AC, and the intersection point is f
- 10. As shown in the figure, take the waist ab of the isosceles triangle ABC as the diameter to draw a semicircle o, intersecting AC with E and BC with D Verification: 1. D is the midpoint of BC 2. If the angle BAC = 50 degrees, calculate the degree of arc BD
- 11. Seeking extremum of univariate parameter equation How to get the maximum value of Z = (COS q) ^ 2 - 4 (sin q) ^ 2 + 2 is 3 and the minimum value is - 2?
- 12. How to solve the parameter equation of ellipse with focus on Y axis?
- 13. What is the elliptic parametric equation with focus on the y-axis? y^2/a^2-x^2/b^2=1 (a>b>0) Two people have different answers. Who do I listen to?
- 14. Elliptic parametric equation with focus on Y-axis?
- 15. On the number axis, all integers whose distance to the origin is not more than 2 have______ (drawing)
- 16. The number of integer points whose distance from the number axis to the origin is less than 2 is x, the number of integer points whose distance is not more than 2 is y, and the number of integer points whose distance is equal to 2 is Z. find the value of X + y + Z
- 17. 26. On the number axis, the number of integer points whose distance from the origin is less than 2 is x, and the number of integer points whose distance from the origin is not more than 2 is y
- 18. On the number axis, the number of integer points whose distance from the origin is less than 2 is x, and the number of integer points whose distance from the origin is not more than 2 is y, then the sum of X and y
- 19. In the plane rectangular coordinate system, write out the coordinates of the following points: (1) point a is on the negative half axis of the axis, and the distance from the origin is 5 units (2) Point B is on the positive half axis of the axis and is three units away from the origin (3) Point C is in the second quadrant, and its distances to the x-axis and y-axis are 3 units and 4 units respectively
- 20. In the plane rectangular coordinate system, if the distance from point a (3, b) to the origin is 5, then the value of B is______ ．