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Duong Nguyen


Actif depuis 2018

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I am calculating membrane water flux using fsolve but MATLAB gave me a negative value of water flux (Jw) as follows. I don't know how to avoid these negative solution from non-linear equation so I would like to know how to solve it correctly
Here are MATLAB codes I used to calculate function [Jw,q]=jw_q_solve(Tf,Tp,P,B,Km,d,h) %Jw, water flux [L.m^-2.h^-1] %q, heat...

environ 5 ans il y a | 1 réponse | 0

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How can solve this system of differential equations with two variables x, y? I will attach a photo to make it clearer.
-dx/dt = -0.6208*y^0.75*x^3; -dy/dt = -3*0.6208*y^0.75*x^3; y(0) == 0.48; x(0) == 1.44;

plus de 6 ans il y a | 1 réponse | 0

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How can solve this differential equation with two variables?
diff(b,a,t) == -db/dt == -6.73x10^-8x(10^-8.5)^(-0.82)x a^0.75 x b^3

plus de 6 ans il y a | 1 réponse | 0

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Nonlinear regression for adsorption with Langmuir isotherm
Can anyone show me how to analyze nonlinear regression for adsorption with Langmuir isotherm? Thank you very much.

presque 7 ans il y a | 1 réponse | 0

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Decrease the scale of y-axis
I have plotted 2 graphs of y versus t with following commands: t = linspace(0,10,20); y = 1./((3/10^(8*8)*7.7*10^58*10^(...

environ 7 ans il y a | 1 réponse | 0

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Error Using ^ When Typing Power Command
I want to plot a graph of y versus t with: >> t = linspace(0,10,20); >> y = 1/(t*(3/10^(8*8)*10^(3/2))/2 + 1)^(2/3); ...

environ 7 ans il y a | 1 réponse | 0

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