The curve described parametrically by `x = t^2 + t +1`, y = `t^2 - t + 1` represents :

The curve described parametrically by x=t^2+t and y=t^2-t represents :

The curve describe parametrically by x =t^(2) +t+1,y=t^(2) -t+1 represents

The curve described parametrically by x=t^(2)+t+1, and y=t^(2)-t+1 represents.a pair of straight lines (b) an ellipse a parabola (d) a hyperbola

The curve described parametrically by x=t^2+t+1 , and y=t^2-t+1 represents. (a) a pair of straight lines (b) an ellipse (c) a parabola (d) a hyperbola

The curve described parametrically by x=t^2+t+1 , and y=t^2-t+1 represents. (a) a pair of straight lines (b) an ellipse (c) a parabola (d) a hyperbola

The curve described parametrically by x=t^2+t+1 , and y=t^2-t+1 represents. (a)a pair of straight lines (b) an ellipse (c)a parabola (d) a hyperbola

Let e and l are the eccentricity and length of the lactus rectum respectively of the conic described parametrically by x=t^(2)-t+1, y=t^(2)-t+1 , then the value of (e )/(l^(2)) is equal to

Let e and l are the eccentricity and length of the lactus rectum respectively of the conic described parametrically by x=t^(2)+t+1, y=t^(2)-t+1 , then the value of (e )/(l^(2)) is equal to