कथन-I : समान्तर चतुभुज जिसकी भुजाये lx + my + n = 0, lx + my + n' = 0, mx + ly + n = 0, mx + ly ...

If the lines lx + my + n = 0, mx + ny + l = 0 and nx + ly + m = 0 are concurrent then

If lx + my + n = 0 is tangent to the parabola x^(2)=y , them

Factoris the expression. lx + my + mx + ly

lim_(x to 0) (K sin x)/(lx + mx cos x) is equal to

The area (in square units ) of the quadrilateral formed by two pairs of lines l^(2) x^(2) - m^(2) y^(2) - n (lx + my) = 0 and l^(2) x^(2)- m^(2) y^(2) + n (lx - my ) = 0 , is

The lines (lx+my)^2-3(mx-ly)^2=0 and lx+my+n=0 forms

The line lx+my+n=0 is a normal to the parabola y^(2)=4ax if