C is the centre of the circle with centre `(0,1)` and radius unity. `y=ax^2` is a parabola. The set of the values of `'a'` for which they meet at a point other than the origin, is

Let C be a circle with center (0,1) and radius unity. P is the parabola y=ax^2 . The set of values of a for which they meet at a point other than origin is

The equatinn of the circle with centre origin and radius 2 is

If (1,-3) is the centre of the circle x^(2) + y^(2) +ax + by + 9 =0 its radius is

Write the coordinates of the points of a circle with centre as origin and radius '4.5' cuts the axes.

The centres of the circles are (a, c) and (b, c) and their radical axis is y-axis. The radius of one of the circles is r. The radius of the other circle is

The centres of the circles are (a, c) and (b, c) and their radical axis is y-axis. The radius of one of the circles is r. The radius of the other circle is

The centres of the circles are (a,c) and (b,c) and their radical axis is the y-axis . The radical of one of the circle is r . The radius of the other circle is

Let be the circle with centre at (1 , 1) and radius is 1 unit . It T is the circle centred at (0 , y) , passing through origin and touching the circle c externally , then the radius of T is equal to _

Let C be the circle with centre at (1, 1) and radius = 1. If T is the circle centred at (0, y), passing through origin and touching the circle C externally, then the radius of T is equal to :