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diff() function
11-09-2014, 05:53 PM
Post: #3
RE: diff() function
(11-09-2014 02:29 PM)DrD Wrote:  6.) diff(diff(f(x,y),y)) ---> -2
7.) diff(-2*x+6*y-2,y) ---> 6
8.) diff(f(x,y),y$2) ---> 6

Modifying step (6.) thus: diff(f(x,y),y,y) works. In step (8.) (given by the y$2), y is sufficiently specified as the variable to use for each following derivative?

-[or]-

In the case: ∂(diff(f(x,hpdiffx),hpdiffx),y) ---> 6 The variable of differentiation is specified only once.

That's a lot to remember. The user guide description for the diff() topic could be expanded for more clarity. I think that about wraps up my interest in this function. Thanks Han, for taking all the time explaining details!

-Dale-
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Messages In This Thread
diff() function - DrD - 11-09-2014, 02:29 PM
RE: diff() function - Han - 11-09-2014, 02:51 PM
RE: diff() function - DrD - 11-09-2014 05:53 PM



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