The equation for finding a circle An equation for finding a circle with diameter a (- 4,0) B (0,2)
AB midpoint: (- 2,1), radius ^ 2 = 2 ^ 2 + 1 ^ 2 = 5
Equation: (x + 2) ^ 2 + (Y-1) ^ 2 = 5
RELATED INFORMATIONS
- 1. Equation of circle (on line, etc.) In XY coordinates, the radius r of the circle point at C (0,10) is 190, and there is a point B at the intersection of the circle point and the positive half axis of the X axis. When the point B moves on the X axis, the trajectory of the origin C is relatively fast~ In XY coordinates, the radius r of the circle point at C (0, a) is 190, and there is a point B at the intersection of the circle point and the positive half axis of the X axis. When the point B moves on the X axis, the trajectory of the origin C is the same. It's urgent~
- 2. What is the undetermined coefficient method Ditto (detailed)
- 3. Given that the equation of circle O is x ^ 2 + y ^ 2 = 9, find the locus of the middle point P of the circle passing through the chord of point a (1,2)? Given that the equation of circle O is x ^ 2 + y ^ 2 = 9, find the locus of the midpoint P of the chord of the circle passing through point a (1,2)? Thank you
- 4. It is known that the radius of the center (0,2) of the circle m is 1, q is the moving point on the x-axis, QA and QB are tangent to the circle m, a and B respectively Finding the trajectory equation of the midpoint P of the moving string ab It's on the Internet, but I can't understand it, Well, 50 more points!
- 5. The trajectory equation () of the midpoint of each chord passing through a point P (1,1) in the circle (X-2) ^ 2 + (Y-2) ^ 2 = 4? (x-3 / 2) ^ 2 + (Y-3 / 2) ^ 2 = 1 / 2 (in known circle)
- 6. In the circle x2 + y2 = 9, the trajectory equation of the midpoint of the moving chord of known point P (1,2) is_________
- 7. Mathematics of senior one: given that BC is a moving chord of circle x ^ 2 + y ^ 2 = 25 and / BC / = 6, then the trajectory equation of the midpoint of BC is?
- 8. Given that the equation of circle O is the square of X + the square of y = 9, find the trajectory equation of the midpoint P of the chord of the circle through point a (1,2)?
- 9. High school mathematics, equations of straight line and circle 1. Draw a tangent line from a point P (2,3) outside the circle (x-1) ^ 2 + (Y-1) ^ 2 = 1 to the circle and find the tangent equation 2. Find the area of the figure enclosed by the curve X ^ 2 + y ^ 2 = / X / + / Y /
- 10. "M = 1 / 2" means that the line (M + 2) x + 3My + 1 = 0 is perpendicular to the line (m-2) x + (M + 2) Y-3 = 0 A. Necessary and sufficient conditions B. Sufficient and unnecessary conditions C. Necessary and insufficient conditions D. Unnecessary and insufficient conditions I want to choose a, but I don't think it's right,
- 11. Seeking: the equation of circle High school students, know the equation of the circle, please write down in the walk! Must want this formula, thank you ha!
- 12. What is the equation for a circle?
- 13. 1) Try to find the circular equation through three known points (1,1)(2,-1)(3,2) 2) A circle and two parallel lines 2x + y = 5 are tangent to 2x + y + 15 = 0 and pass through point (2,1) Find the equation for this circle 3) A circle passes through (1,1) and (1, - 1) and is tangent to the straight line X - 2 = 0. Find the equation of the circle 4) Try to find the parameter equation of circle x ^ 2 + y ^ 2-x-3y = 0 5) Try to find the circular equation with the diameter of the line between (2, - 5) and (8, - 1), and find the parametric equation of this circle 20 points for answering one question
- 14. The equation of the circle passing through the point a (0,5) B (1, - 2) C (- 3, - 4) is solved by the method of undetermined coefficient, and D E F is calculated first
- 15. The general steps of finding the analytic expression of function by undetermined coefficient method Be specific
- 16. The main process of applying the method of undetermined coefficient to solve elliptic standard equation is?
- 17. Detailed steps of matching method and undetermined coefficient method (undetermined coefficient method should have examples) Given the function f (x-1) = x ^ 2-3x + 2, find f (x + 1) Please use the matching method to list the detailed steps, because I don't know how 2 - (x-1) in step f (x + 1) ^ 2 - (x-1) comes from There are also the detailed steps of undetermined coefficient method (please work out an example for me) It's really troublesome. But thank you for 80
- 18. How to find the equation of a circle symmetric to a line?
- 19. The equation of line and circle If the line 3x + 4Y + k = 0 is tangent to the circle (x-3) ^ 2 + y ^ 2 = 4, then the value of K is equal to
- 20. The equation of circle A circle is tangent to the y-axis, the center of the circle is on the straight line x-3y = 0, and the chord length obtained by cutting the circle with the straight line y = x is 2 and the root sign is 7