Let \( \mathbb{P}_{n} \) be the set of real polynomials of degree at most \( n \), and write \( p^{\prime} \) for the derivative of \( p \). Show that \[ S=\left\{p \in \mathbb{P}_{5}: p(-2)=-5 p^{\prime}(-2)\right\} \] is a subspace of \( \mathbb{P}_{5} \).
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The zero vector: The zero polynomial is in S because 0 = -5*0. Show more…
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