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halo31
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Homework Statement
The problems states "All polynomials of the form p(t)= at^2, where a is in R."
I'm supposed to see if it is a subspace of Pn. I've already done that but the book's answer is that it spans Pn by Theorem 1, because the set is span{t^2}
Homework Equations
Theorem states "1 If v1...vp are in a vector space V , then Span {v1... vp.} is a subspace of V ."
The Attempt at a Solution
I've already checked the three properties showing that it is a subspace of P2.
I checked that it was closed under addition and scalar multiplication as well as containing the zero vector. But I am not clear how the book comes up with the span{t^2} part? If I am correct would the reason be that since a is already a scalar then t^2 is the part that generates the vectors in P2.
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