Question

define envelope in mathematics

Answer 1

Envelope, in mathematics, a curve that is tangential to each one of a family of curves in a plane or, in three dimensions, a surface that is tangent to each one of a family of surfaces. For example, two parallel lines are theenvelope of the family of circles of the same radius having centres on a straight line.

Answer 2

A envelope is a curves in the plans is a curve that is tangent to each member of the family at some point