`2x^2 + 2y^2 + 2 lambda x + lambda^2 = 0` represents a circle for

2x^2 +2y^2 +4 lambda x+lambda =0 represents a circle for

2x^(2)+2y^(2)+4 lambda x+lambda=0 represents a circle for

If 2(x^(2)+y^(2))+4 lambda x + lambda^(2)=0 represents a circle of meaningful radius, then the range of real values of lambda , is

If 2(x^(2)+y^(2))+4 lambda x + lambda^(2)=0 represents a circle of meaningful radius, then the range of real values of lambda , is

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

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

IF x^(2) + y^(2) - 2y - 15 + lambda (2x + y - 9) = 0 represents family of circles for. Different values of lambda , then the equation of the circle(s) along these circles having minimum radius is/are

IF x^(2) + y^(2) - 2y - 15 + lambda (2x + y - 9) = 0 represents family of circles for. Different values of lambda , then the equation of the circle(s) along these circles having minimum radius is/are

If the equation x^(2)+y^(2)+6x-2y+(lambda^(2)+3lambda+12)=0 represent a circle. Then