Let A and B are two fixed points in a plane, then locus of another point Con the same plane such that CA + CB = constant, (> AB) is
circle
ellipse
parabola
hyperbola
Area enclosed by the curve is
sq unit
2 sq unit
3 sq unit
4 sq unit
D.
4 sq unit
The given equation can be rewritten as
Which represents an ellipse.
Area enclosed in an ellipse = ab
= 4 sq unit
If the normal at (ap, 2ap) on the parabola y2 = 4ax, meets the parabola again at (aq2 , 2aq), then
p2 + pq + 2 = 0
p2 - pq + 2 = 0
q2 + pq + 2 = 0
p2 + pq + 1
The curve described parametrically by x = t2 + 2t - 1, y = 3t + 5 represents :
an ellipse
a hyperbola
a parabola
a circle