(adsbygoogle = window.adsbygoogle || []).push({}); What is F[a]?

I'm having a hard time with notation. If F[x] is the set of polynomials in x, then what is:

F[a]?

How is it different from F[a,b]?

And help would be great?

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# Homework Help: What is F[a] ?

**Physics Forums | Science Articles, Homework Help, Discussion**