Question

Question 1

Using MATLAB solve the following system of linear simultaneous equations

3x + 2y - z = 10........... [1]

-x + 3y + 2z = 5........... [2]

x - y - z = -1 .................[3]

s + 2t - 3u + 4v = 12........... [1]

2s + 2t - 2u + 3v = 10......... [2]

t + u = -1............................ [3]

s - t + u - 2v = -4................ [4]

Answer 1

% 3x + 2y - z = 10........... [1]
% -x + 3y + 2z = 5........... [2]
% x - y - z = -1 .................[3]

A = [3 2 -1; -1 3 2; 1 -1 -1];
b = [10; 5; -1];

res = A\b;

x = res(1)
y = res(2)
z = res(3)

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A = [1 2 -3 4; 2 2 -2 3; 0 1 1 0; 1 -1 1 -2];
b = [12; 10; -1; -4];

res = A\b;

s = res(1)
t = res(2)
u = res(3)
v = res(4)

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