- #36

richard9678

- 93

- 7

Absolutely. That dawned on me. I mean how you can really "soup up" f(x). You could write f="whatever" and it has certain degree of utility. But I can now see that someone (a long time ago) has recognised that if you employ the notation f(x)= "whatever", you can do a lot more with it. In other words, you can do, or express a lot more that just place an x in the brackets. So, the underlying format of the notation f(x) is really quite clever. I'm just beginning to realise that. Of course, this shows I have not studied very far with functions yet, but I'm beginning to appreciate how useful the notation f(x) is.Stephen Tashi said:Many people rely on f(x) type notation to understand important operations on functions. The chain rule in calculus is Df(g(x)) = f'(g(x)) g'(x). Students must understand the distinction between f'(g(x)) g'(x) versus f'(x)g'(x).

Of course, others rely on the Liebnitz notation df/dy dy/dx.

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