(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Simple enough: Is P_{2}a subspace of P_{3}?

2. Relevant equations

3. The attempt at a solution

I think it is. All P_{2}'s can be written in the form 0x^3 + ax^2 + bx + c. Then, it's easy to see that it's closed under scalar addition and multiplication.

Our professor mentioned that R_{2}is NOT a subspace of R_{3}, so that's throwing me off here. Anyone?

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# Homework Help: Lin. Algebra: Is P2 a subspace of P3

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