Unable to Solve the symbolic Equation below: Warning: Unable to find explicit solution. For options, see help.

Hello All,

I'm trying to solve Unable to Solve the Equation blow (pressure model). However, I keep getting the the following messege: Warning: Unable to find explicit solution. For options, see help. My code is shown below:

syms p P
nm = 3e15;
s0=1;
v=4.82e20;
tao0=1e-13;
p0=3;
q0=26;
q1=10.6;
R=8.31;
T=295;
V=16.7;
K=3.27e19;
 t=1:400;

eq = ((t./taop)==(log(p0./p))+((a.*W).*(Z-(1./(1+a.*p))+log(((1+a.*p)./p).*Y))));

Unrecognized function or variable 'taop'.

P = solve(eq,p,'IgnoreAnalyticConstraints',1)

Thanks in advance..

[Torsten]

Question has already been answered here:

https://de.mathworks.com/matlabcentral/answers/1890157-error-when-using-ode45-to-solve-langmuir-isotherm-too-many-input-arguments?s_tid=srchtitle

As you can see from the message, "solve" is not able to give an analytical solution of your ODE. Thus you have to use a numerical method - and that's what I provided.

[Walter Roberson]

taop and a are not defined in the code

Answer 1

[N/A]

The solution can be found following this link:

https://www.mathworks.com/matlabcentral/answers/1892460-index-exceeds-the-number-of-array-elements#answer_1147625