Application example summary text:
EXAMPLE=106
Galerkin: Y'' - 2XY'/(X^2+1) + 2Y/(X^2+1) = (X^2+1)

DATA_SET= 01
with Y(0)=2, Y(1)=5/3, Y(X) = X^4/6 - 3X^2/2 + X + 2
L. V. Fausett "Applied Num Analysis using Matlab"
Prentice Hall, 1999, p. 482, EXACT_CASE = 15
Here we use three quadratic (L3) line elements.

DATA_SET= 02
with Y(0)=1, Y'(1)+Y(1)=0, Y=(X^4 -3X^2 -X +6)/6
Fausett p. 484, Robin condition, EXACT_CASE = 16
Here we use three quadratic (L3) line elements.

DATA_SET= 03
with Y'(0)+Y(0)=0, Y'(1)-Y(1)=3, Y=X^4/6 +3X^2/2 +X -1
Fausett p. 485, 2 Robin conditions, EXACT_CASE = 17