MATLAB: How to include nonexplicit constants in the solve function

funcion intersectionsolve

Usually to find the intersection between two functions, you can use:
intersection=solve('-es-2.69*Ta+65','-es+6.11*exp((2.492E6/461.7)*(1/273-1/(Ta+273)))','es','Ta');
And it works fine, but when you introduce 65=b1 and b1 comes from other calculations, i keep getting the error:
Warning: Explicit solution could not be found. > In solve at 169
So what i have is this:
b1=e-m1*T –> from this function b1=65
intersection=solve('-es-2.69*Ta+b1','-es+6.11*exp((2.492E6/461.7)*(1/273-1/(Ta+273)))','es','Ta');
Warning: Explicit solution could not be found. > In solve at 169
For some reason the function 'solve' cant recognize that b1 comes from a previous calculation. It seems that only accepts numerical values and stated Vars expressed as symbols (es and Ta for this example).
Am running out of ideas here. Already searched this before and nothing.
Thanks!

Best Answer

Hi
b=solve('b-65','b');
b=subs(b)                    
eq1=['-es-2.69*Ta+' num2str(b)];
eq2='-es+6.11*exp((2.492E6/461.7)*(1/273-1/(Ta+273)))';
[Ta,es]=solve(eq1,eq2,'es','Ta')
Related Question