The value of 'c' for which the set `{(x,y)|x^2+y^2+2x le 1}nn{(x,y)|x-y+cle0}` contains only one point in common is

The value of 'c' for which the set {(x,y)|x^(2)+y^(2)+2x<=1}nn{(x,y)|x-y+c<=0} contains only one point in common is

The value of 'c' for which the set {(x, y)|x^2+y^2+2xle1}bigcap{(x, y)|x-y+cge0)} contains only one point in common is

The value of 'k' for which the set {(x,y)|x^(2)+y^(2)-2x-2y+1 =0} contains only one point in common is

The sum of all the values of lambda for which the set {(x, y):x^(2)+y^(2)-6x+4y=12}nn{(x, y): 4x+3y lambda} contains exactly one element is

The sum of all the values of lambda for which the set {(x, y):x^(2)+y^(2)-6x+4y=12}nn{(x, y): 4x+3y= lambda} contains exactly one element is

The area of the region described by A = {(x,y) : x^(2)+y^(2) le 1 and y^(2) le 1-x} is :

The area of the region described by A = {(x,y) : x^(2)+y^(2) le 1 and y^(2) le 1-x} is :

If A ={(x,y): x^2+y^2 =25} and B{(x,y): x^2+9y^2=144} , then A nn B contains :

The area of the region described by : A={(x,y): x^2 +y^2 le 1 and y^2 le 1 -x } is :