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Scot Gould

Scot Gould

1039 Reputation

15 Badges

12 years, 93 days
Claremont McKenna, Pitzer, Scripps College
Professor of Physics
Upland, California, United States
Contact Scot Gould
Dr. Scot Gould is a professor of physics at Claremont McKenna, Pitzer, and Scripps Colleges - members of The Claremont Colleges in California. He was involved in the early development of the atomic force microscope. His research has included numerous studies and experiments using scanning probe microscopes, particularly those involving natural fibers such as spider silk. More recently, he was involved in developing and sustaining AISS. This full-year multi-unit, non-traditional, interdisciplinary undergraduate science education course integrated topics from biology, chemistry, physics, mathematics, and computer science. His current interest is integrating computational topics into the physics curriculum. He teaches the use of Maple's computer algebraic and numerical systems to assist students in modeling and visualizing physical and biological systems. His Dirac-notation-based quantum mechanics course is taught solely through Maple.

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These are questions asked by Scot Gould

| | operator calls VectorCalculus:-Norm...

Scot Gould 1039 Maple 2019
norm vectorcalculus
January 19 2020
2 0

Is it possible to create the operator command : |x| so that it passes x to the VectorCalculus Norm function so that if I write:

>  | < 3, 0, 4> |

the result is 5?

Display vector components...

Scot Gould 1039 Maple
array vector print
November 16 2019
2 2

I assume I'm missing the verb here, but how does one display the elements of a vector and an array?

I can only do it with browsing or changing the "number format". 
 

> 

restart
> 

v := `<,>`(v1, v2); v1 := 3.2; v2 := b

Vector[column](%id = 18446745611378162974)

 (1)
> 

v, eval(v), value(v), evalf(v), evalm(v), print(v)

Vector(2, {(1) = v1, (2) = v2})

  

Vector[column](%id = 18446745611378162974), Vector[column](%id = 18446745611378162974), Vector[column](%id = 18446745611378162974), Vector[column](%id = 18446745611378152862), array( 1 .. 2, [( 1 ) = (v1), ( 2 ) = (v2) ] )

 (2)
> 

v

Vector[column](%id = 18446745611378162974)

 (3)
> 

``

 


 

Download Vector_Display_Problem.mw

 

Vector vs. list. Evaluation issue....

Scot Gould 1039 Maple 2019
vector evaluation list
September 25 2019
1 1

We often use the vector notation "< >" as in <x, y, z>.  However, when I use it with a function, it does not evaluate the same way as a simple list "[ , ]". 
 

> 

"restart; g(r):=k*r;"

proc (r) options operator, arrow, function_assign; k*r end proc

 (1)
> 

g1 := g([x, y]); g2 := g(`<,>`(x, y))

g1 := k*[x, y]

  

Vector[column](%id = 18446745825756564886)

 (2)
> 

k := 1; g1; g2

k := 1

  

[x, y]

  

Vector[column](%id = 18446745825756564886)

 (3)

 

The value of k is not applied in g2.  Can someone point me in the direction as to the difference between the two types of entities as interpreted by Maple?  

Plotting with mod...

Scot Gould 1039 Maple
plot mod
September 03 2019
3 4

How do I write plot ceil(x) mod 2 properly?

If I write: 

plot(ceil(x) mod 2, x = 0 .. 4)

it produces a step pattern and not a square wave. (Only 0 and 1 should be plotted.) 

setoption3d size...

Scot Gould 1039 Maple
setoptions
December 12 2018
1 2

Has there been a option included in the plots:-setoptions3d that is equivalent to the size option found in plots:-setoptions? I can't seem to find one.  I would really like to be able to set all my 3d plots to the same size. Or am I missing something?

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