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JK
10/13/10 4:07pm

Hi, everybody.

I have a problem about the formula manipulation.
I have a function called P which is a function of two variables T and Vm such as P=f(T,Vm).
Then I do the parital differential of P with respect with Vm and set it to 0.
dP/dVm=0
I want to express one variable T as the expression of Vm.
I try "solve","findroot",but doesn't work because it is very comlex expression.
dP/dVm=(E^(1.6856699639351487`/
T) (1.4551915228366852`*^-11 Vm^2 -
2566.2295125310848` T (Vm - 8.590085314294516`) (Vm +
99.06307714517084`)) +
E^(0.8428349819675743`/
T) (Vm^2 (Vm (119.41639467401366` Vm - 4492.771028805535`) +
42257.58023505885`) -
292.13443595155593` T (Vm - 18.652822386923695`) (Vm -
8.590085314294516`) (Vm + 99.06307714517085`)) -
8.314` T (Vm - 18.65282309120741`) (Vm -
18.652821682639942`) (Vm - 8.590085314294539`) (Vm +
99.06307714517084`) -
126.78438622540031` Vm (Vm +
5.189597750299588`*^-15) ((Vm - 37.62273213045856`) Vm +
353.86749324006007`))/((Vm -
18.811366065229283`)^2 Vm^2 (17.56882583302598` E^(
0.8428349819675743`/T) + Vm - 18.652822386923685`)^2)

hope somebody can help

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Subject (listing for 'formula Substitution')
Author Date Posted
formula Substitution JK 10/13/10 4:07pm
Re: formula Substitution qm2008q 12/05/10 04:13am
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