iterations / trial and error method to find a variable.

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Tarek Chaabo
Tarek Chaabo 2018-5-12
评论： dpb 2018-5-13
I have this enthalpy equation where all the variables are known but the temperature T2. I want to write a code to find the best possible solution for T2 by iteration / trial and error method. you can start from T2= 400 for instance.
deltah=a(T2-T1)+(b/3)*(T2^2-T1^2)+(c/3)*(T2^3-T1^3)+(d/4)*(T2^4-T1^4)
a=28.9; b=0.1967*10^-2; c=0.4802*10^-5; d=-1.966*10^-9; dltH=8900; T2=400; T1=300;

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Jan
Jan 2018-5-12
编辑：Jan 2018-5-12
You can use fzero to solve this 3rd order polynomial.
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Tarek Chaabo
Tarek Chaabo 2018-5-13
thank you so much i learned something new. Is there another way where i can see each value of T2 printed to the command window until the final value of 593.8714 ??
dpb
dpb 2018-5-13
Read the documentation; specifically look at the additional, optional input argument list...

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