The standard equation for a circle whose center is on a straight line 5x-3y = 8 and tangent to two coordinate axes

If x = y, then x = y = 4; if x = - y, then x = 1, y = - 1, then the center of the circle is (4,4) or (1, - 1) because the radius is the distance from the center of the circle to the tangent line, that is, the center of the circle is (4,4)

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1. The standard equation for a circle whose center is on the straight line 5x-3y-8 and tangent to both axes Good brother and sister, do me a favor
2. The equation of circle passing through point (8,1) and tangent to two coordinate axes
3. If f (x) = ax ^ 3 + 3x ^ 2 + 2 and f '(- 1) = 4, then the value of real number a is equal to? f'(x)=3ax²+6x f'(-1)=3a-6=4 A = 10 / 3 what you have done, but still don't understand. How can you calculate f '(x)?
4. If the line ax + 2Y + 1 = 0 is perpendicular to the line x + 3y-2 = 0, what is the value of a?
5. If the line ax + 2Y + 1 = 0 is perpendicular to the line x + Y-2 = 0, then a=______ ．
6. 1 the line ax + 2Y + 1 = 0 is perpendicular to the line x + Y-2 = 0, then what is the value of a? 2 find the minimum of the sum of the distances from any point on the x-axis to the fixed point (0,2), (1,1)?
7. If the line ax + 2y-3 = 0 is perpendicular to the line x + y + 1 = 0, then a is equal to
8. The distance between two parallel lines ax + 2y-1 = 0 and X + (A-1) y + 2 = 0 is? Is the value of a calculated by using the same slope and then by using the knowledge of the distance between two parallel lines?
9. If the line ax + 2y-3 = 0 is parallel to x + (A-1) y + 2 = 0, then the value of a is
10. If the line ax + 2y-1 = 0 is parallel to the line X-Y + 2 = 0, then the real number a =
11. {7x + 6y = - 19,6y-5x = 17 to solve the equations
12. The distance between the line 4x-3y + 4 = 0 and the line 8x-6y + a = 0 is 2 Is self-learning high school curriculum for detailed explanation!
13. (2012. Pudong New Area three mode) "a=3" is "straight line ax+2y+3a=0 and straight line 3x+ (A-1) y=a-7 parallel". A. Sufficient and unnecessary condition B. necessary and insufficient condition C. sufficient and necessary condition D. neither sufficient nor necessary condition
14. A = 3 is a line ax + 2Y + 3A = 0 and a line 3x + (A-1) y = A-7 which are parallel and not coincident () A. Sufficient and nonessential condition B. necessary and nonessential condition C. sufficient and necessary condition D. neither sufficient nor necessary condition
15. The linear equation of the line 3x + 5y-1 = 0 is symmetric with respect to the line 4x + 3y-5 = 0
16. It is known that the minimum value of the sum of the distances from the moving point P on the parabola y2 = 4x to the lines L1 and L2 is () A. 2B. 3C. 115D. 3716
17. It is known that the line l1:4x-3y + 6 equals zero, the line L2: x equals minus 1, and the square of the parabola y equals the moving point P on 4x to the straight line It is known that the line L1: 4x minus 3Y plus 6 equals zero, the line L2: x equals minus 1, and the square of the parabola y equals the sum of the distances from the moving point P on 4x to the line L1 and the line L2? A. 1 B.3 c.d.16 molecule 37
18. Make two mutually perpendicular straight lines L1 and L2 through point P (2,4). If L1 intersects X-axis at point a and L2 intersects Y-axis at point B, find the trajectory equation of the midpoint m of line ab
19. The trajectory equation of the point with equal distance to the line y = 0 and the line y = √ 3 (x + 1), The answer is (√ 3x-3y + √ 3) (√ 3x + y + √ 3) = 0 I'm dull and love to get to the top of things, so the more detailed the better,
20. Find the trajectory equation of the point with the same distance between two lines 2x-y-1 = 0 and 4x-2y + 9 = 0