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how to solve a simultaneous equation of 2 variables.

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Sivakumaran Chandrasekaran
回答： SHREY VERMA 2021-8-26
x+3y=5;2x+4y=4. In general maths, we can be able to find the values of 'x' and 'y' from the above equations. How to find it in MATLAB?

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采纳的回答

Walter Roberson
Walter Roberson 2013-3-30
If you have the Symbolic toolbox,
syms x y
solve(x + 3*y - 5, 2*x + 4*y - 4)
  2 个评论
Sivakumaran Chandrasekaran
Sivakumaran Chandrasekaran 2013-3-30
x: [1x1 sym]
y: [1x1 sym]. this is the answer which i got.. but i want to know the value of x and y.. no values are stored in workspace also

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更多回答（3 个）

Anand
Anand 2013-3-30
A = [1 3;...
2 4;];
b = [5;...
4];
%Solve Ax=b as A\b
X = A\b
>> A\b
ans =
-4
3
Read more here: http://www.mathworks.com/help/matlab/ref/mldivide.html
Ali Al-khadher
Ali Al-khadher 2019-3-14
%{
ax+by=c....equ(1)
dx+ey=f....equ(2)
A=[a b;d e]
B=[c f]
sol=A/B
x=sol(1)
y=sol(2)
example
3x-9y=-42....equ(1)
2x+4y=2......equ(2)
%}
A = [3 -9;2 4]
b = [-42;2]
%Solve Ax=b as A\b
sol=A\b;
x=sol(1)
y=sol(2)
  1 个评论
Timothy Beckham
Timothy Beckham 2021-7-21
编辑：Timothy Beckham 2021-7-21
I am grateful for the solution. I was looking for something similar and came across this page. Thank you very much!

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SHREY VERMA
SHREY VERMA 2021-8-26
You can use this file for solving 2, 3, 4 or more variable for solving linear equation, which may consist of real or complex number.

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