" Let "x^(2)+y^(2)=r^(2)" and "xy=1" intersect at "A&B" in first quadrant,"1fAB=sqrt(14)" then find the value of "

Let x^(2)+y^(2)=r^(2) and xy=1 intersect at A&B in first quadrant,If AB=sqrt(14) then find the value of r.

Let x^2 + y^2 = r^2 and xy = 1 intersect at A & B in first quadrant, If AB = sqrt14 then find the value of r.

If x=1, y=2, z=-1 then find the value of z^2-2xy(x-y)

The lines x + y =|a| and ax-y= 1 intersect each other in the first quadrant. Then the set of all possible values of a is the interval.

The lines x + y=|a| and ax-y = 1 intersect each other in the first quadrant. Then the set of all possible values of a is the interval:

The lines x+y=|a| and ax-y=1 intersect each other in the first quadrant. Then the set ofpossible values of a is the interval

The lines x+y=|a| and ax-y=1 intersect each other in the first quadrant. Then the set of all possible values of a is the interval:

The lines x+y=|a| and ax-y=1 intersect each other in the first quadrant. Then the set of all possible values of a is the interval :

Consider the curves C_(1):|z-2|=2+Re(z) and C_(2):|z|=3 (where z=x+iy,x,y in R and i=sqrt(-1) .They intersect at P and Q in the first and fourth quadrants respectively.Tangents to C_(1) at P and Q intersect the x- axis at R and tangents to C_(2) at P and Q intersect the x -axis at S .If the area of Delta QRS is lambda sqrt(2) ,then find the value of (lambda)/(2)