1. The problem statement, all variables and given/known data This question is about finding the smallest bowl to contain all the water being spurt out of a water spray head. They used the lagrange multipliers to solve it which I understand, but the the envelope doesn't look like a parabola to me?? Isn't the envelope supposed to be a curve that is parallel to a certain point on every member of a family curve? 3. The attempt at a solution I dont even see how it's possible to draw a curve that's tangential to all water-jet curves..