Hello,I need help in Mathematica,my problem is that I wrote the system of differential equations and I put a certain value of the variables and it is supposed that the value of the absolute of the determent would be zero but unfortunately I did not get zero , I got another answer(adsbygoogle = window.adsbygoogle || []).push({});

when I put R=0,S=0,h=0,a=3.127,w=3390 the absolute will be zero

but when I put R=5,S=8.2,a=3.116,w=3426,h=0 the answer was not zero which is supposed to be zero as what is written in the research.So Is my writing of the equation in mathematica wrong?

I wrote the equations by my hand writing and also in Mathematica,so I hope to Know where is the mistake in writing the system in Mathematica?and thanks for help

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# I have a problem with mathematica

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