Question

At the condition,  at , N1=1 at ξ=-1 which yields c=\(\frac{-1}{2}\). Then these shape functions are called ____

(a) Computer functions

(b) Programming functions

(c) Galerkin function

(d) Lagrange shape functions

This question was posed to me in homework.

The doubt is from One Dimensional Problems topic in section One Dimensional Problems of Finite Element Method

Answer 1

The correct choice is (d) Lagrange shape functions

To explain I would say: The lagrange shape function sum to unity everywhere. At the given condition the shape functions are named as Lagrange shape functions.