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Sep 26, 2016
05:38 PM

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Sep 26, 2016
05:38 PM

solving symbolic equation

Hello,

I'm having a hard time to find 'L' using a function - please find the attached file.

L should be around 7.

Thank you very much!

MJ

Solved! Go to Solution.

1 ACCEPTED SOLUTION

Accepted Solutions

Sep 26, 2016
08:48 PM

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Sep 26, 2016
08:48 PM

I can't read Prime 3.1 files, but according your screenshot and text you simply are searching a numeric solution, not a symbolic one, right?

And then your last line isn't an equation so we have nothing which we could solve for L!

If you mean that the last expression should be zero, you could use one of the three following numerical methods to obtain the solution (it can't be 7 as L is a length).

Of course you could also use the symbolic "solve" to get all three solutions (the real one and the two conjugate complex ones). But the result would look a bit daunting.

In case you are curious - heres the symbolic solution

8 REPLIES 8

Sep 26, 2016
08:48 PM

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Sep 26, 2016
08:48 PM

I can't read Prime 3.1 files, but according your screenshot and text you simply are searching a numeric solution, not a symbolic one, right?

And then your last line isn't an equation so we have nothing which we could solve for L!

If you mean that the last expression should be zero, you could use one of the three following numerical methods to obtain the solution (it can't be 7 as L is a length).

Of course you could also use the symbolic "solve" to get all three solutions (the real one and the two conjugate complex ones). But the result would look a bit daunting.

In case you are curious - heres the symbolic solution

Sep 27, 2016
08:41 AM

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Sep 27, 2016
08:41 AM

Werner Exinger wrote:

I can't read Prime 3.1 files...

Please find in attachment converted worksheet for Prime **3.0** version.

Sep 27, 2016
08:53 AM

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Sep 27, 2016
08:53 AM

Thanks! Fortunately the screenshot privides by Minjae Park showed all which was necessary.

So I guess you have installed Prime3 and 3.1 side by side as was discussed a while ago and copied the sheet region by region?

Sep 27, 2016
08:56 AM

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Sep 27, 2016
08:56 AM

Werner Exinger wrote:

Thanks! Fortunately the screenshot privides by Minjae Park showed all which was necessary...

Werner Exinger wrote:

...

So I guess you have installed Prime3 and 3.1 side by side as was discussed a while ago and copied the sheet region by region?

Yes exactly. Well, you remember it, too.

Sep 27, 2016
10:15 AM

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Sep 27, 2016
10:15 AM

Werner Exinger,

Thank you very much for your help! As you can see I'm a greenhorn using Mathcad prime.

Have a great day!

MJ

Sep 27, 2016
12:55 AM

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Sep 27, 2016
11:14 AM

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Sep 27, 2016
03:10 PM

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Sep 27, 2016
03:10 PM

Thank you!