MATLAB: Help with equation substituting

equatioequationsolvesubstitutetutorialvariables

hi i want to substitute in an equation that has 2 variables (q) and (pwf), given that the user has to input several values for (pwf) to substitute into the equation and solve for (q)

Thank you

Best Answer

Example:

new_pwf = rand();
new_equation = subs(TheEquation, pwf, new_pwf);
sol = solve(new_equation, q)

Related Solutions

MATLAB: Calculating a new variable from a symbolic equation

You already defined values for Q_full and Q. You do not need to define them as symbolic variables later. This will not work. Try the following approach:

Q_full = 0.5
Q = [1,2,3]
syms y
for i=1:numel(Q)
    eqn(i) = vpasolve(Q(i)/Q_full == 2+y,y)
end

MATLAB: Question about table command?

Transpose them to columns and it will display them as you want:

pwf3=[start:interval:maxp]';                                % Transpose To A Column Vector
q3=((1-(0.2*(pwf3/pr)))-(0.8*(pwf3/pr).^2))*1067;
table(pwf3,q3)
      pwf3     q3 
      ____    ____
      0.03    1067
      0.04    1067
      0.05    1067
      0.06    1067
      0.07    1067
      0.08    1067
      0.09    1067
       0.1    1067

Best Answer

Related Solutions

MATLAB: Calculating a new variable from a symbolic equation

MATLAB: Question about table command?

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