1-Visitor

Question

Explicit problem?

Forum|Forum|14 years ago
December 21, 2011
6 replies
12293 views

As in the topic... is there any way to avoid that?

http://imageshack.us/photo/my-images/862/mathcad.png/

Moreover I want that my P will be displayed on the kN... where do I change that? and when it will explicit all the symbols.... it will be normal... cause now there is mess all over...

I would be grateful

Greetings,

Other

V

ValeryOchkov

24-Ruby IV

Sorry, but I think that explicit in Mathcad and Mathcad Prime is not a tool but a toy.

See explicit in Mathcad PM - http://communities.ptc.com/docs/DOC-2413

P

ptc-4331184

Author

1-Visitor

hmm... Mathcad PM = Mathcad Prime Minister = Mathcad Prime v2.0?

Sorry but I dont have that..

So there is no solution for my problem? 😕

V

ValeryOchkov

24-Ruby IV

Gregory Baran wrote:
hmm... Mathcad PM = Mathcad Prime Minister = Mathcad Prime v2.0?
Sorry but I dont have that..
So there is no solution for my problem? 😕

Sorry, I think it is one solution of your problem:

a:=b+c

where

b=...

c=...

P

ptc-1176891

1-Visitor

Trying to re-create your example, EXPLICIT worked fine for me. Remember that it will replace variables with the last assignment (using ":") or the last symbolic evaluation for each variable. It appears each of your three inputs were calculated earlier in the sheet, so those assignments / definitions are what is being explicitly inserted. You'd have to symbolically evaluate those variables to get them to show up the way you want in EXPLICIT.

There was an example sheet by PTC posted to the old website quite awhile ago ... hopefully it's still available and findable on the site somewhere.

Preston

P

ptc-1176891

1-Visitor

http://communities.ptc.com/message/163714#163714

P

ptc-4331184

Author

1-Visitor

so it's like if i defined:

a:=2

b:= 2*a = 4

c:=a*b explicit,ALL -> 2 * (2*a) = 8

and it should be when i got the result.... i should type somewhere that it wont be printed.. like on the right side of the other page....

a:=2

b:=4

then i will get:

c:=a*b explicit,ALL -> 2 * 4 = 8?

that's what should I do?

P

ptc-1176891

1-Visitor

Almost ...

a:=2

b:=2*a ...

at this point use the SYMBOLIC evaluation (right-hand arrow off of the SYMBOLICS menu) instead of the equals sign. You can right-click on the expression and choose to show the evaluation as an equals, to make it LOOK like you have it typed. But in the background it's storing "b" as "4" symbolically, instead of "2*a". This is the key to making EXPLICIT work; since it's a symbolic keyword, it will display whatever it has stored symbolically for each variable.

Then when you use EXPLICIT you'll see the "b" substituted as "4."

Preston

P

ptc-1656721

1-Visitor

Gregory Baran wrote:
As in the topic... is there any way to avoid that?
http://imageshack.us/photo/my-images/862/mathcad.png/
Moreover I want that my P will be displayed on the kN... where do I change that? and when it will explicit all the symbols.... it will be normal... cause now there is mess all over...
I would be grateful
Greetings,

Try this.

VyaT

1_explicit_22_12_11-xmcd.zip

P

ptc-1176891

1-Visitor

Yep - you either have to re-define your variables as VyaT has done, or you symbolically evaluate them when they are defined. Unfortunately when using the symbolic evaluation you don't get control over what units are stored; it uses the defaults. If those match what you want, score! If not, then you'd have to re-define manually.

P

ptc-1656721

1-Visitor

Preston Baxter wrote:
... If those match what you want, score! If not, then you'd have to re-define manually.

This, sometimes, not necessarily to do.

To Gregory Baran: Please attach your Mathcad file to the message.

P

ptc-4331184

Author

1-Visitor

That's exactly what I wanted thank you so much.. VyaT

there are still some question I want to know

what's the shortcut to make those function.. simplify, substitute, float (is this ~left shift left ctrl & "."?)

and about the file you attached there is a score of:

σ.rI = 1.685MPa

if i paste again σ.rI it will be displayed as: σ.rI = 1.685 x 10^6 Pa....

is this possible that it will be in MPa?

i tried in tools > worksheet options > unit system.... changed but that didn't work for me

moreover if the equation is so long how do i make that on the next line? i thought it's ctrl + enter...

P

ptc-1176891

1-Visitor

However the symbolic engine last sees your variable defined is how it gets re-displayed. So if you define it in MPa, that's what will show up in EXPLICIT.