Is the subset consisting of all functions f such that f(0)=3 a subspace of vector space defined on the set of real numbers?

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Originally Posted by lm6485 Is the subset consisting of all functions f such that f(0)=3 a subspace of vector space defined on the set of real numbers? Does this set contain the vector zero in this vector space? Tonio

Your set doesn't contain the zero function.

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