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How to solve Simultaneous equations

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Mira
Mira 2024-6-25
回答： Walter Roberson 2024-6-25
3x+2y=0
x+y=4

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回答（2 个）

Torsten
Torsten 2024-6-25
移动：Torsten 2024-6-25
Write your equations as
A*z = b
for a 2x2-matrix A and a 2x1-vector b with z being the vector of unknowns [x;y].
To solve for z, you can then use "mldivide":
https://uk.mathworks.com/help/matlab/ref/mldivide.html
Walter Roberson
Walter Roberson 2024-6-25
Ran in:
sympref('FloatingPointOutput',0);
syms x y
eqn1 = 4*x - 3*y == 0
eqn1 = 
eqn2 = 3*x + 2*y == 4
eqn2 = 
sol = solve([eqn1, eqn2])
sol = struct with fields:
x: 12/17 y: 16/17

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