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MathCad is solving incorrectly?

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NovaStark
4-Participant
4-Participant
‎Feb 02, 2013 01:39 PM
‎Feb 02, 2013 01:39 PM

MathCad is solving incorrectly?

I am re-creating the appendix C of calculations to size a flare system, however I can't seem to get MathCad to correctly solve for my variable. I've swapped out units and values but I still don't get the correct answer.

I have uploaded the output from MathCad

However, the answer I am supposed to get is d=0.468 m. Not too sure how to make mathcad only give me the positive answer though.

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32 REPLIES 32
ValeryOchkov
24-Ruby IV
24-Ruby IV
(To:HarveyHensley)
‎Feb 04, 2013 01:41 PM
‎Feb 04, 2013 01:41 PM

"Yes, it is, Harvey, and you are also right!"

Thank you!

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ValeryOchkov
24-Ruby IV
24-Ruby IV
(To:ValeryOchkov)
‎Feb 04, 2013 02:24 PM
‎Feb 04, 2013 02:24 PM

mc2.png

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ValeryOchkov
24-Ruby IV
24-Ruby IV
(To:ValeryOchkov)
‎Feb 04, 2013 11:55 PM
‎Feb 04, 2013 11:55 PM

2.png

Do you know why the second formula must be divided by two?
Author of the first Formula is onegreat scientist - Einstein (see above).
The authorship of the second formula is credited to two great scientists - Newton and Leibniz. Therefore, the second formula was divided by two, so that nobody was hurt.

NL.png

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