Sunday, March 2, 2014

Section 9.5, Due on Monday March 3

What do I find difficult?
When I looked at the visual for the composite function of g o f in Figure 9.2, I got really nervous.  Holy smokes that looks difficult.  At first glance, it looks like a composite function is a function within a function.  Or a combination of functions.  If you run one function, the output of that function ends up being the input of another function.  That's what I understand it to be.  If it is really that simple, then I think I got it.  But if somehow the functions interact and relate other than that, I'm going to be confused.
With associative functions, h o (g o f) and (h o g) o f are associative if these two functions h o (g o f) and (h o g) o f.  This seems to be pretty straight forward.  I look forward to learning more about this.


What was interesting to me?
I've always found linear combinations interesting. When there is a combination of functions, I think it provides for interesting opportunities and situations.  The composition g o f, defined by (g o f)(a)=g(f(a)) for all a \in A.  I think this is a very basic concept, and I look forward to learning more about it.  I think we can do some interesting things with it, in finding different functions and looking at the interesting way that things interact.  I think we're going to find a fascinating way that functions interact, and I'm excited to learn more about that.

Viva Espana.

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