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 January 11th, 2011, 02:58 PM #1 Newbie   Joined: Jan 2011 Posts: 1 Thanks: 0 Linear Combination and Span Hey, I need help with two scalar problems. The directions for both problems are "Find all scalars c, if any exist, such that the given statement is true." 26. The vector [-1,c] is a linear combination of the vectors [-3,5] and [6,-11]. 30. The vector [c,-2c,c] is in the span of [1,-1,1], [0,1,-3], and [0,0,1]. I know how to find if a vector is a linear combination of the vectors but I don't know how to do it with an extra variable. The span problem, I am completely lost. Thanks for any help!
 January 11th, 2011, 04:04 PM #2 Newbie   Joined: Jan 2011 Posts: 1 Thanks: 0 Re: Linear Combination and Span hai, don't consider c as extra variable, it acts a constant. proceed as usual. result we get include c.

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