Advanced Search

C_R

1461 Reputation

19 Badges

4 years, 9 days
Contact C_R

MaplePrimes Activity


These are questions asked by C_R

Is this an endpoint of function composit...

C_R 1461 Maple
functional-operator
April 25 2023
1 1

Example

diff(w(x), x, x) = F*((6*(-a^2/(2*L^2)+a^3/(3*L^3)))*x+2*a^2/L-a^3/L^2)/EI

diff(diff(w(x), x), x) = F*(6*(-(1/2)*a^2/L^2+(1/3)*a^3/L^3)*x+2*a^2/L-a^3/L^2)/EI

 (1)

Eval(lhs(diff(diff(w(x), x), x) = F*(6*(-(1/2)*a^2/L^2+(1/3)*a^3/L^3)*x+2*a^2/L-a^3/L^2)/EI), x = L) = (`@`(simplify, eval))(rhs(diff(diff(w(x), x), x) = F*(6*(-(1/2)*a^2/L^2+(1/3)*a^3/L^3)*x+2*a^2/L-a^3/L^2)/EI), x = L)

Eval(diff(diff(w(x), x), x), x = L) = -F*a^2*(L-a)/(L^2*EI)

 (2)

Can the expression above be further shortened by function composition and function application (to a single group of arguments)? I tried

(`@`(Eval, lhs) = `@`(`@`(simplify, eval), rhs))(diff(diff(w(x), x), x) = F*(6*(-(1/2)*a^2/L^2+(1/3)*a^3/L^3)*x+2*a^2/L-a^3/L^2)/EI, x = L)

Error, (in evalapply) invalid input: lhs expects 1 argument, but received 2

  

which does not work.
Since the error message is clear I am looking for a single argument command that could replace lhs and rhs.  

Analog to evalf, which accepts an index, I tried to replace lhs by

op[1](diff(diff(w(x), x), x) = F*(6*(-(1/2)*a^2/L^2+(1/3)*a^3/L^3)*x+2*a^2/L-a^3/L^2)/EI)

diff(diff(w(x), x), x), F*(6*(-(1/2)*a^2/L^2+(1/3)*a^3/L^3)*x+2*a^2/L-a^3/L^2)/EI

 (3)

to do the same as

op(1, diff(diff(w(x), x), x) = F*(6*(-(1/2)*a^2/L^2+(1/3)*a^3/L^3)*x+2*a^2/L-a^3/L^2)/EI)

diff(diff(w(x), x), x)

 (4)

Unfortuenatly this does not work. Are there any other options or have I reached an end point?

Would a single argument variant of op make sense for other purposes than the example above?


Download replacement_of_lhs_and_rhs_by_single_argument_function.mw

Would it make sense to add a second hint...

C_R 1461 MaplePrimes
upload attachment
April 14 2023
0 2

Often, in response to a question without code, the suggestion is made to upload a Maple file using the button with the green arrow .

This happens so often that I get the impression that new users don't recognize this as the best and most efficient way to get their question analyzed and answered. Or they just don't know how to do it.

So why not adding a hint to consider uploading code just before "Suggested Tags"?

A typesetting question: How to overlay a...

C_R 1461 Maple
April 11 2023
1 5

To illustrate, here is an HTML example that overlays a circle and a letter

<span style="position: relative; font-size: 2em;">&#x25CB;<span style="position: absolute; top: 1.0em; right: 0.4em; font-size: 0.4em;">Y</span></span>

than can be pasted here to visualize.

I am not sure if that is possible with Maples typesetting tags.

Is it possible to plot the intersection ...

C_R 1461 Maple
plot3d plotting
April 09 2023
2 13

The union is simple

with(plottools):
with(plots):
display([torus([1,1,1], 1, 2),torus([1,6,1], 1, 2)], scaling=constrained, lightmodel=light1, shading=zgrayscale,color=[red,red]);

but how to plot the intersection?

Opening Maple V R5 documents with "right...

C_R 1461 Maple 2023
April 04 2023
0 3

This happened on Windows 10 clicking on *.mws documents while Maple 2023 was not running.

My observations with one document (I do not have others at hand at the moment):

No freeze when Maple is already running.

No freeze when the startup page (Start.mw) is disabled.

Older versions opened in Windows file explorer with “right click and open with” did not show this behavior.

Since there are ways to open such old documents, my intention is to document my observations and to find out if others can reproduce it. If not, my setup might differ from default or the file has an issue.

3 4 5 6 7 8 9 Last Page 5 of 18