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14-Alexandrite
June 24, 2019
Solved

Problem assigning Index

  • June 24, 2019
  • 8 replies
  • 3511 views

Hello,

 

I am trying to generate roots using Mathcad but I guess I am unable to define the index properly. Please help me as what can I do to solve. My version is Prime 5.0

 

 

Thanks,

 

Faisal

Best answer by Werner_E

@fahmed-2 wrote:

I think I found a solution.


Vectorization as suggested above does the job as well and a bit more elegant, I guess.

 

Your program with "Match" and "trim" would throw an error if the function a(..) once returns a vector without a single value being 0 or less. You may use "try..catch" to cope with this or look at my suggestion below.

B.png

Worksheet attached.

 

8 replies

25-Diamond I
June 24, 2019

The problem is the equal sign after the definition of your function "a".

Delete it and it should work.

 

But now you get a unit mismatch because something with your function f is wrong.

You try to add unit-less (the first sine summand) and a summand which hast the unit Pa/m. This can't work.

B.png

fahmed-214-AlexandriteAuthor
14-Alexandrite
June 25, 2019

Thank you for your reply. Yes, you are right the units of alpha should be per meter but still it does not work. I want my variable "a" to be defined such that it is a function of alpha, d, and x.

23-Emerald IV
June 25, 2019

There is no problem, as long as you follow up all advice given. See attachment.

(Or did I miss something?)

 

Success!
Luc

21-Topaz II
June 26, 2019

Hi Faisal,

 

You can use headers and footers on the page to insert the heading, name, and dates.

The relevant bits are found on the ribbon as Document tab, Headers and footers section.

 

This allows the document to expand and shrink as necessary.  Your document has 31 pages but uses only a few.

 

Cheers

Terry

fahmed-214-AlexandriteAuthor
14-Alexandrite
June 26, 2019

I think I found a solution.

Werner_E25-Diamond IAnswer
25-Diamond I
June 26, 2019

@fahmed-2 wrote:

I think I found a solution.


Vectorization as suggested above does the job as well and a bit more elegant, I guess.

 

Your program with "Match" and "trim" would throw an error if the function a(..) once returns a vector without a single value being 0 or less. You may use "try..catch" to cope with this or look at my suggestion below.

B.png

Worksheet attached.