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I can;t seem to get DSOLVE working.  Will some kindly soul please send me a complete example, starting with an f(x) & clearly documented?   Many thanks.




Why does the following not work?



Here is my code & the error mesage.  What's wrong?


X := Vector*([0, 5, 10, 15, 20, 25, 30], datatype = float);
Y := Vector*([38.8, 53.8, 82.4, 107.6, 130.7, 152.4, 173.2], datatype = float);
NonlinearFit(av^2+bv+c, X, Y, v);
Error, (in Statistics:-NonlinearFit) invalid input: PostProcessData expects its 1st argument, x, to be of type {array, list, rtable}, but received w

Isn't there a way to get Maple to document each step in its execution of a command?  E,g,, I have a complicated expression that I want to SIMPLIFY & I would like to see how Maple does it.


I'm looking for the greatest integer function in Maple.  I.e., [x] is the greatest integer < = x.  What does Maple call it?  What is the syntax?


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