Question

let l>0 be a constant. Find the solution of the boundary value problem, where u"=0, u(0) = u(l) =0 ?

Answer 1

\[u''=0\]integrate twice

Answer 2

so, the result of it is Zero ?

Answer 3

Im not quiet sure

Answer 4

\[\int u'' dx=u'+c\]make sense?

Answer 5

wait

Answer 6

yes it does.. u reckon that what the question asked for ?

Answer 7

yes \[u''=0\]\[\int u''dx=\int 0\]\[u'=c\]integrate both sides again\[\int u' dx=\int c \ dx\]\[u=cx+d\]

Answer 8

Thanks :)

Answer 9

np :)