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08-07-2021
03:23 AM

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08-07-2021
03:23 AM

Disagreement between the calculated symbolic result and the numerical result (transcendent equation)

Good morning everyone,

how can I make the calculated value of the symbolic solution coincide with the numerical one of the given transcendent equation? (Imposing with the assumption that 20 <x <30 it falls into an endless loop )

I thank

Solved! Go to Solution.

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08-07-2021
05:07 PM

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08-07-2021
05:07 PM

Would this help:

"fully" tries to force the symbolic to give ALL solutions of the equation and Mathcad tells us that we simply have to use all branches of the Labert-W function rather than just branch #0. Most branches gives you non-real results, but _n=-1 gives you the solution you are looking for.

3 REPLIES 3

08-07-2021
04:11 AM

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08-07-2021
04:11 AM

See the following:

Alan

08-07-2021
05:54 AM

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08-07-2021
05:54 AM

Yup! all clear, but I'm looking for the second root as a function of Lambert ...

08-07-2021
05:07 PM

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08-07-2021
05:07 PM

Would this help:

"fully" tries to force the symbolic to give ALL solutions of the equation and Mathcad tells us that we simply have to use all branches of the Labert-W function rather than just branch #0. Most branches gives you non-real results, but _n=-1 gives you the solution you are looking for.