Summation Equivalent - Сообщения
#1 Опубликовано: 09.12.2021 09:10:03
Hi,
I am trying to convert a Mathcad 15 sheet, and have a problem with the below equation:
Is there a summation within Smath that will do the second summation?
From the Mathcad help:
Thanks in advance
Ian
I am trying to convert a Mathcad 15 sheet, and have a problem with the below equation:
Is there a summation within Smath that will do the second summation?
From the Mathcad help:
Thanks in advance
Ian
#2 Опубликовано: 09.12.2021 12:33:55
Hi. There are not equivalent, but this is how to convert it into usual summation operator.
Best regards.
Alvaro.
Best regards.
Alvaro.
#3 Опубликовано: 10.12.2021 05:15:00
Hi,
Still cant get it to work, I will strip out the identifying material and post the worksheet.
Thanks
Ian
Still cant get it to work, I will strip out the identifying material and post the worksheet.
Thanks
Ian
#4 Опубликовано: 10.12.2021 07:12:21
#5 Опубликовано: 10.12.2021 08:18:09
Attached is sheet, this is a MRM for beam frequency analysis
Sum over 'n' ... NOT over 'k'
Model summation attached.
Function Running Summation.sm
#6 Опубликовано: 10.12.2021 08:39:51
Attached is sheet, this is a MRM for beam frequency analysis
Better to attach the original Mathcad document.
Russia ☭ forever, Viacheslav N. Mezentsev
#7 Опубликовано: 10.12.2021 11:24:34
Mathcad sheet attached, striped version
beam frequency test 2.xmcd
Jean, I am at a loss as to which part of your file I should be looking at.
Ian
beam frequency test 2.xmcd
Jean, I am at a loss as to which part of your file I should be looking at.
Ian
#8 Опубликовано: 10.12.2021 11:48:32
Hi. As Viacheslav says, it's better in this case the mathcad file. Just a couple of notes.
You use a for loop with i as counter. Thus, at the exit, i equals the last count value, not the entire range. So, or you redefine i as range, or use this way for not changing i value
Actually, SMath doesn't have "range" variables, it only have scalars and matrices. But mathcad have "true" range variables, which it's more a complication than an adventage. BTW in SMath you can't use a range variable in the same way, and sometimes needs some dummy variable for detect them
Finally, remember that in mathcad sqrt(-1) is 1i, but in SMath it is just i, so using is as counter you loose all the complex algebra.
Bests regards.
Alvaro.
You use a for loop with i as counter. Thus, at the exit, i equals the last count value, not the entire range. So, or you redefine i as range, or use this way for not changing i value
Actually, SMath doesn't have "range" variables, it only have scalars and matrices. But mathcad have "true" range variables, which it's more a complication than an adventage. BTW in SMath you can't use a range variable in the same way, and sometimes needs some dummy variable for detect them
Finally, remember that in mathcad sqrt(-1) is 1i, but in SMath it is just i, so using is as counter you loose all the complex algebra.
Bests regards.
Alvaro.
#9 Опубликовано: 10.12.2021 12:30:05
Jean, I am at a loss as to which part of your file I should be looking at.
It just shows how to run summation wrt several dependent functions.
#10 Опубликовано: 10.12.2021 13:33:41
Hi Alvaro,
Some interesting hints there. I imagine its also the same going the other way.
Hi Jean,
OK, now I understand, just some pointers for me
Thanks
Ian
Some interesting hints there. I imagine its also the same going the other way.
Hi Jean,
OK, now I understand, just some pointers for me
Thanks
Ian
#11 Опубликовано: 10.12.2021 13:46:48
Hi Jean,
OK, now I understand, just some pointers for me
Thanks
Ian
The A,B are numerical two vectors of coefficients.
Then introduced in the scalar function wrt sin/cos.
#12 Опубликовано: 10.12.2021 15:00:17
I am trying to convert a Mathcad 15 sheet, and have a problem with the below equation:
I think that there should be such a replacement.
Russia ☭ forever, Viacheslav N. Mezentsev
#13 Опубликовано: 10.12.2021 15:09:11
You can use debugging in both programs to check that the functions are working correctly.
Russia ☭ forever, Viacheslav N. Mezentsev
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