Subspace spanned by a vector

  • #1

Main Question or Discussion Point

What would the subspace spanned by a single vector (for example) f(x)=x+1 be?
 

Answers and Replies

  • #2
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The subspace spanned by a vector is the set of all scalar multiples of that vector. A function like f(x)=x+1 is a "vector" in some function space, most likely over the real or complex numbers, so the answer is all functions of the form g(x)=a*(x+1), where a is an element of the scalar field (R or C).
 

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