If `3x^(2)+2lambda xy + 3y^(2)+(6-lambda)x+(2lambda-6)y-21=0` is the equation of a circle, then its radius is

If 2x^2+lambdax y^+2y^2+(lambda-4)x+6y-5=0, is the equation of a circle, then its radius is :

If 2x^(2)+lambda xy^(+)2y^(2)+(lambda-4)x+6y-5=0 is the equation of a circle,then its radius is :

If 2x^2+lambdaxy+2y^2 +(lambda-4)x + 6y-5=0 represents a circle, then its radius is:

If the equation lambda x^2+(2 lambda-3)y^2-4x-1=0 represents a circle, then its radius is :

The number of integral values of lambda for which x^2+y^2+(1+lambda)x+(1-lambda)y+3=0 is the equation of circle whose radius cannot exceed '1' is ____

If lambda x^(2) + 4xy + y^(2) + lambda x + 3y + 2 = 0 represents the equation of the parabola , then the vlaue of lambda is _

The equation lambda^(2)x^(2)+(lambda^(2)-5 lambda+4)xy+(3lambda-2)y^(2)-8x+12y-4=0 will represent a circle, if lambda=

The equation lambda^(2)x^(2)+(lambda^(2)-5 lambda+4)xy+(3lambda-2)y^(2)-8x+12y-4=0 will represent a circle, if lambda=

If the equation 3x^2 + 3y^2 + 6lambdax + 2lambda = 0 represents a circle, then the value of lambda . lies in

If the equation (lambda^(2)-5 lambda+6)x^(2)+(lambda^(2)-3 lambda+2)x+(lambda^(2)-4)=0 is satisfied by more then two values of x then lambda=