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 | | From: | Vec | | Subject: | derivative notation | | Date: | Mon, 24 Jan 2005 12:06:32 -0800 |
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 | Hello
I am having a problem understanding what is going on with this notation.
In leaning about derivatives.
f’(x) = y’ = df/dx = d/dx (f(x)) = d/dx (y)
Why does it break up df/dx to d/dx (f(x)) since the nominator is a one
whole notation “df” and that is not d multiply by f because there is not
“d” and “f” variables by them selves
And then goes on to say = d/dx (y) ok, I know f(x) = y but now the notes
are breaking up things which are notations as if they are variables with
separate values.
Why is that, and what does it mean?
thanks
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| | From: | mathman | | Subject: | re:derivative notation | | Date: | 23 Jan 2005 21:29:41 -0600 |
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| The expression d/dx means take the derivative of something with
respect to x. The notations df/dx, (d/dx)f(x) all mean the same
thing. It is nothing mysterious, only notation.
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