No Real Roots

No Real Roots - No Real Roots - Сообщения

#1 Опубликовано: 07.01.2021 18:15:41
Tow Wai Lim

Tow Wai Lim

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Dear Expert User

I've tried all possible way but I still can't find a solution.

Please see attached calculaiton sheet.
Page1.sm (4 КиБ) скачан 27 раз(а).
Capture.JPG


Using MathCAD this is solve very easily. I am not sure what is wrong here?


Can you guide me how to solve this problem.
#2 Опубликовано: 07.01.2021 18:53:42
overlord

overlord

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Wrote

Dear Expert User
I've tried all possible way but I still can't find a solution.
Using MathCAD this is solve very easily. I am not sure what is wrong here?
Can you guide me how to solve this problem.


Sometimes you have to give SMath a starting point while using roots() and FindRoot().
If you use roots() you also have to eliminate units or just simply multiply the unknown by its own unit.
FindRoot() can calculate with units, but again you have to give some starting point.

Regards

findroot.png
#3 Опубликовано: 07.01.2021 19:00:22
Tow Wai Lim

Tow Wai Lim

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How do you insert the ; in the roots function?
#4 Опубликовано: 07.01.2021 19:10:22
overlord

overlord

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How do you insert the ; in the roots function?


This depends on your choice of Arguments Separator.
Look for Tools>Options>Argument Separator in menu.
If your option is comma then insert comma.
If your option is semicolon then insert semicolon.
I guess nobody use period for separator.

Some functions have additional argument support.
Actually number of argument could appear on placeholder if it is coded.
There is two argument roots() and three argument roots() as you can see.

Regards

placeholder.png
#5 Опубликовано: 07.01.2021 19:15:47
Tow Wai Lim

Tow Wai Lim

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Got it.. Thanks So much. All this little little things is so difficult to find. Really appreaciate to have your help on this.

#6 Опубликовано: 07.01.2021 19:16:21
Tow Wai Lim

Tow Wai Lim

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Capture2.JPG
#7 Опубликовано: 07.01.2021 22:40:16
Jean Giraud

Jean Giraud

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I've tried all possible way but I still can't find a solution.


... like this

SolveWisely.PNG
#8 Опубликовано: 07.01.2021 22:46:15
Jean Giraud

Jean Giraud

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