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Best answer by ViktorKorobov

Simple solution. Зачем усложнять исходное ДУ?

telo_vverch.png

Viktor

2 replies

V
vlehner1-Visitor
1-Visitor
May 27, 2017

Valery,

I think it's because of non linearity of the derivation of y(t).

There may not be y'(t)²- The terms of the higest derivation has to be linear. It's a typical Mathcad Problem.

Derive the Energy-Equation to the variable t, and all will be fine.

See attachement please.

Volker

V
24-Ruby IV
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
May 27, 2017

Thanks,

but sorry - I cannot open Prime 4 - show please the picture of attach pdf!

V
vlehner1-Visitor
1-Visitor
May 27, 2017

Ah, ok.

here the pdf-worksheet.

V
24-Ruby IV
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
May 29, 2017

One more solution

Iesolve.png

Iesolve-s.png

Maple

Iesolve-s-Maple.png

V
vlehner1-Visitor
1-Visitor
May 29, 2017

Intsolve() is not dokumented in MP4.

How can that be?

Is it dokumented in MP3.1?

V
24-Ruby IV
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
May 29, 2017

It is for Mathcad PM (Prime Minister)

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