Hi Delia,
I understand that you are getting an error since symbolic variable is compared to a numeric value. To resolve this issue, you may follow these steps.
- Define `a`, `b`, and `c` are defined as numeric values. This ensures that these parameters are treated as ordinary numbers rather than symbolic variables.
- Define the equation is defined as an anonymous function `eqn` of `x` and solve it
- The `fzero` function is employed to find a numerical solution `sol_x` for the equation `eqn`.
- These modifications transform the original symbolic approach into a numerical one, effectively addressing the conversion error.
Below attached code incorporates above suggestions and solves the value.
% Define parameters
a = 30;
b = 20;
c = 10;
% Define the equation as an anonymous function
eqn = @(x) a + b - 200 * x - sqrt(compute_d(x, c));
% Solve equation numerically
sol_x = fzero(eqn, 0);
% Display solution
disp(['Solution for x: ', num2str(sol_x)]);
% Export the solution to an Excel file
filename = 'solution.xlsx';
xlswrite(filename, sol_x); % Write the solution directly
% Define the function to compute d
function d = compute_d(x, c)
if x > c
d = (x - c) * 2;
else
d = 0;
end
end
You may refer these below documentation links more information on ‘fzero’ function
