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I don't see how that is possible.

This is an example out of Introduction to Linear Algebra by Gilbert Strang and I am trying to understand the solutions. So any help would be appreciated. This is the problem: every combination of v = (1,-2,1) and w = (0,1,-1) has components that add to _____. The answer is that the components of every cv + dw add to zero.

Just use google. First hit was: http://en.wikipedia.org/wiki/Gene_finding

My guess that the reason the boxing glove is designed so the boxer can't make a correct fist as on impact part of the glove and fist will compress inward lessening the blow.