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    Linear Combinations and Spans

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    1) Determine if b is a linear combination of , .

    2) List five vectors in span { }. For each vector, show the weights on used to generate the vector and list the three entries of the vector. Do not make a sketch.

    a)

    b)

    3) Let For what value(s) of h is b in the plane spanned by and ?

    4) True or false, explain answer.

    a) Any list of five real numbers is a vector in .
    b) The vector u results when a vector u-v is added to the vector v.
    c) The weights in a linear combination cannot all be zero.
    d) When u and v are nonzero vectors, Span {u,v} contains the line through u and the origin.
    e) Asking whether the linear system corresponding to an augmented matrix
    [ b] has a solution amounts to asking whether b is in Span { }.

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    https://brainmass.com/math/graphs-and-functions/linear-combinations-and-spans-115013

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