numerical method using matlab

if exact solution u(x)=exp(pi*x)(5/6-x)(1/2-x)*sin(pi*x) and sturm-liuoville problem u''-q(x)u=-f(x) u(0)=0, u(1)=u(1/2)-2u(5/6) then find the error by using gauss seidel iteration

[fahmi faris]

we must find the Lagrange interpolation

[Jan]

This is a homework question. You are wanted to solve this. It sounds like you want to forward this problem to the readers in this forum, such that you do not have to solve it by your own. You will not be successful with this strategy.