Thomas Dean

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14 years, 154 days

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These are replies submitted by Thomas Dean

@gkokovidis Statistics[CumulativeSum] returns floating point values.

 

Tom Dean

@Carl Love I saw the difference.  Went away to read the mnanual, help and Heck.  Where may I find a description of the leading operators like `=`?  I found elementwise operators.

Thanks, this does what I want.

Tom Dean

I am trying to obtain a correct solution to the problem described in

http://escholarship.org/uc/item/6wm0k4dn

which has several obvious typos.

I have an equation of the form

a*x+b*y=c*x+d*y

How do I sort or collect this so I have

a*x - c*x = -b*y + d*y or the factored form?

Tom Dean

@Mac Dude 

I understand the difference between procedure calls and expressions.

My problem was remembering when Maple does full evaluation.  Using D(...) rather then diff(...) cleared my problems.

Tom Dean

@acer 

I, most likely inappropriately, have used procedures as shorthand so larger expressions are cleaner, at least to me.  Old age is catching up...

Thanks,

Tom Dean

@Thomas Dean 

 

I used diff(...) rather than D(...)

D(...) can handle procedures.

Thanks,

Tom Dean

@acer 

I have a much more complicated expression that I want to use procedures for.

I want to use the result of a function call as the body of a procedure.

eq := 2*t^3+9*t^2-60*t+1;
deq := diff(eq,t);

How do I define a procedure like

f := t -> deq;

I have read Rodger Kraft's article on evaluation several times and still can not manage to get this right.

Tom Dean

I don't know where Post came from.  The cotton?

It may be better to avoid using decimal points in numbers.  You can convert H to rational for better manipulation.

H:=... as beforeH:=convert(H,rational);

 

I am using Maple 11.

I want to produce a plot like the bode plot in Scilab.

An example is produced with the Scilab commands

bode(syslin('c',1/(1+%s)))

I can put an example on my web site, if it will help.

Thanks.

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