[G.Polya]
Separate the various parts of the condition. Our first duty is to understand the problem. Having understood the problem as a whole, we go into detail. We consider its principal parts, the unknown, the data, the condition each by itself. When we have these parts all in mind but no particularly helpful idea has yet occurred to us we go into further detail. We consider the various data each data go into further detail. We consider the various data, each datum by itself. Having understood the condition was a whole, we separate its various parts,then we consider each part by itself. We see nowe the role of the suggestion that we have o idsucss here. It tends to provoke a step that we have to take when we are trying to see the problem distinctly and have to go into finer and finer detail. It is a step in
DECOMPOSING AND RECOMBINGIN Separate the various parts of the condition. Can you write them down? We often have opoprtunity to ask this question when we are SETTING UP EQUATIONS