Exercise 9.2.2 Determine whether p(x) = 4x² − x is in span {x²+x, x² −1, −x+2}.

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Q: 1. Find the exact interval of convergence for the power series Σn²x.

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Q: 6. Define f: (0, 1)→ R by f(x) = co nition; in later theorems, this uniquer ¹ Does & hor

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