your boundary.
4x+2y+3z=16
To get the y-range, set x=0, z=0, so y is between 0 and 8
for x-range, set z=0. then x is between 0 and (16-2y)/4
z goes between 0 and (16-4x-2y)/3
the crossing points are irrelavant.
try and see what u get.
you're right. quite an important concecptual mistake. i revised my notes, and well, realize that maybe with ascoli-arzela, but I am lost. it seems like such a broad question...
i would need some help if you don't mind. thank you
Homework Statement
Let g belong to C([a,b]) be given, and let X={f belonging to C([a,b]) such that abs(f(t))<=abs(g(t)), for any t belonging to [a,b]}
Find all g's for which X is compact.
Homework Equations
A compact set is closed and bounded. I believe that all the f's smaller tan g...