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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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