6. (5%) Let b1 = (1,0, -1,0,0), b2= (1,1,1,1,1),b3= (1,0,1,2,1) in R5 andw =span{b1,b2,b3}. Suppose
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6. (5%) Let b1 = (1,0, -1,0,0), b2= (1,1,1,1,1),b3= (1,0,1,2,1) in R5 andw =span{b1,b2,b3}. Suppose c=(0,-6,-2,0,-2). Then what is theminimum value of ||c - u||for all possible choices of