I'm trying to solve this question from Fulton's algebraic curves:
I've already easily solved (a) and the existence part of (b). I'm having problems to prove the uniqueness of part (b).
I need help.
Thanks in advance.
Answer
If a∈R is invertible and b∈R are such that a+bt=0, then a=b=0: if b≠0, then a∈m, a contradiction.
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