Hello.... I need to prove the following set is algebraically independent... I donīt have no idea how to do it. Please help me!! $\displaystyle ${cos(x), cos(\sqrt{2} x), cos(\sqrt{3} x)}$$ regards!
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Algebraically independent over which field ?
Over $\displaystyle $\mathbb{R}$$ I guess. My worksheet doesnīt say it
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