Re: numerical problem

• To: mathgroup at smc.vnet.net
• Subject: [mg17055] Re: numerical problem
• From: pokornp at math.vscht.cz ()
• Date: Fri, 23 Apr 1999 02:32:02 -0400
• Organization: Ceske Vysoke Uceni Technicke, Praha
• References: <7f9ign\$564@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```biggabba at my-dejanews.com wrote:
: My problem is a problem with two non-linear equations, they are non-linear
: with Exp. functions. My problem is that I can`t find any solution with
: different Solve menus or FindRoot.

: Solve[{(p2-380)Exp[p1-p2-20]/((1+Exp[p1-p2-20]+2Exp[p1-90]+Exp[p1-80])^2)
: +(p2-280)Exp[p1-p2-40]/((1+Exp[p1-p2-40]+Exp[p1-130]+Exp[p1-110]+Exp[p1-120])
: ^2) =(341-p1)/((1+Exp[p1-p2-20]+2Exp[p1-90]+Exp[p1-80])^2)+
: (1+Exp[p1-p2-20]+2Exp[p1-90]+Exp[p1-80])(p1-156.88)+
: (p1-141)(Exp[p1-p2-40]+Exp[p1-130]+Exp[p1-110]+Exp[p1-120])/
: ((1+Exp[p1-p2-40]+Exp[p1-130]+Exp[p1-110]+Exp[p1-120])^2),
: (p1-540)Exp[p1-p2-20]/((1+Exp[p1-p2-20]+2Exp[p1-90]+Exp[p1-80])^2)+
: (p1-140)Exp[p1-p2-40]/((1+Exp[p1-p2-40]+Exp[p1-130]+Exp[p1-110]+Exp[p1-120])^
: 2) =(p2-184.12)(Exp[p1-p2-20]/(1+Exp[p1-p2-20]+2Exp[p1-90]+Exp[p1-80]))
: -(p2-181)((Exp[p1-p2-20])^2)/((1+Exp[p1-p2-20]+2Exp[p1-90]+Exp[p1-80])^2)
: +(p2-281)Exp[p1-p2-40](1+Exp[p1-130]+Exp[p1-110]+Exp[p1-120])/
: ((1+Exp[p1-p2-40]+Exp[p1-130]+Exp[p1-110]+Exp[p1-120])^2)}]

: I would be very grateful if someone could tell me something how to progress
: this problem.

: -----------== Posted via Deja News, The Discussion Network ==----------
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How about == instead of = ?

Pavel Pokorny
Math Dept, Prague Institute of Chemical Technology
e-mail: Pavel.Pokorny at vscht.cz
http://staff.vscht.cz/mat/Pavel.Pokorny

```

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