Question

Find the equation of the surface. A standard cone with vertex at (7, 0 , 0) opening up on the positive x-axis.

Answer 1

solution:

Since, it’s a standard cone opening up on the positive x – axis therefore,

X = √y²+z²

And because it has a vertex at (7,0,0)

Therefore the equation of surface is  

X = 7 + √y²+z²