If the tangent and normal to a rectangular hyperbola cut off intercepts `a_(1)` and `a_(2)` on one axis and `b_(1)` and `b_(2)` on the other, then

If the tangent and normal to a rectangular hyperbola cut off intercepts x_(1) and x_(2) on one axis and y_(1) and y_(2) on the other, then

If the tangent and normal to a rectangular hyperbola cut off intercepts x_(1) and x_(2) on one axis and y_(1) and y_(2) on the other, then

If the tangent and normal at a point on rectangular hyperbola cut-off intercept a_(1), a_(2) on x-axis and b_(1), b_(2) on the y-axis, then a_(1)a_(2)+b_(1)b_(2) is equal to :

If the tangent and normal to the rectangular hyperbola xy=16 at point (8,2) cut off intercepts a_(1),a_(2) on the x axis and b_(1)b_(2) on the y axis then a_(1)a_(2)+b_(1)b_(2)+7//2 equals

If the tangent and the normal to a rectangular hyperbola xy = c^(2) , at a point , cuts off intercepts a_(1)" and " a_(2) on the x- axis and b_(1) b_(2) on the y- axis, then a_(1)a_(2) + b_(1) b_(2) is equal to

If the tangent and normal to xy=c^2 at a given point on it cut off intercepts a_1, a_2 on one axis and b_1, b_2 on the other axis, then a_1 a_2 + b_1 b_2 = (A) -1 (B) 1 (C) 0 (D) a_1 a_2 b_1 b_2

If the tangent and normal to xy=c^2 at a given point on it cut off intercepts a_1, a_2 on one axis and b_1, b_2 on the other axis, then a_1 a_2 + b_1 b_2 = (A) -1 (B) 1 (C) 0 (D) a_1 a_2 b_1 b_2

If the tangent and normal to the hyperbola x^(2) - y^(2) = 4 at a point cut off intercepts a_(1) and a^(2) respectively on the x-axis, and b_(1) and b_(2) respectively on the y-axis, then the value of a_(1)a_(2) + b_(1)b_(2) is