If the line ax + by + c = 0 is a normal to the curve xy = 1 then

If the line ax + by + c =0 is a normal to the curve xy+1=0 ,then 1) ab 2) ab=0 3) ab>0 d) ab=-3

If the line ax + by + c = 0 is a normal to the curve xy = K^(2) then show that a and b have opposite signs.

If the line ax+by +c =0 is a normal to the curve xy=1 at the point (1, 1), then -

If the line ax+by+c=0 is a normal to the curve xy=1 at the point (1,1), then prove that a and b are of opposite signs.

If the line a x+b y+c=0 is a normal to the curve x y=1, then (a) a >0,b >0 (b) a >0,b >0 (d) a 0

If the line,ax+by+c=0 is a normal to the curve xy=2

If the line ax+by+c=0 is normal to the curve xy+5=0 , then

If the line ax + by + c = 0 is a tangent to the curve xy + 4 = 0 then