how to solve(x,y,z,t) in matlab

I'm assuming you want to solve for x, y, z, and t simultaneously. The solve function in MATLAB can be used for this purpose.

To use solve function in MATLAB, follow the below steps:

1. Define the equations you want to solve.
2. Save the equations as variables.
3. Use the solve function with the variables as inputs.

Here's an example:

main.m
syms x y z t; % defining the variables
eq1 = x + y - z + 2*t == 1; % equation 1
eq2 = 2*x - 3*y + z + t == 5; % equation 2
eq3 = x - 2*y + 2*z - t == 0; % equation 3
eq4 = 3*x + y - z + 2*t == 7; % equation 4

sol = solve(eq1, eq2, eq3, eq4, x, y, z, t); % solving the equations

% accessing the solution
xSol = sol.x
ySol = sol.y
zSol = sol.z
tSol = sol.t
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The solve function returns a structure containing the solutions for each variable. You can access the solution for each variable by using the dot notation with the solution structure and the variable name (e.g. sol.x, sol.y, sol.z, sol.t in the example above).