द्विघात समीकरण 2x2 - 6y2 - 12z2 + 18yz + 2xz + xy = 0 निरूपित करता है:

What does the curve r = a(1 + cos(θ)) represent?

Which of the following equations represents the Folium of Descartes?

The conic defined by the equation x2 + xy + y2 + x - 4y + 1 = 0 represents a/an: