Try to solve System of Linear Equations

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Dai Nguyen
Dai Nguyen 2021-4-20
回答： Star Strider 2021-4-20
Hi
I'm trying to solve this matrix to find x and y, however, it didn't work. Please help
syms x y
eqn1 = x+y == 250;
eqn2= 10*x+45*y ==24000;
eqn3 = x+3*y ==3360;
eqn4 = 10*x+15*y ==1440;
sol = solve([eqn1, eqn2, eqn3, eqn4], [x, y]);
xSol = sol.x
ySol = sol.y

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采纳的回答

Star Strider
Star Strider 2021-4-20
One option:
syms x y
eqn1 = x+y == 250;
eqn2= 10*x+45*y ==24000;
eqn3 = x+3*y ==3360;
eqn4 = 10*x+15*y ==1440;
eqns = [eqn1; eqn2; eqn3; eqn4];
vars = symvar(eqns)
[A,b] = equationsToMatrix(eqns,vars);
B = linsolve(double(A),double(b))
x = B(1)
y = B(2)
.

更多回答（1 个）

David Hill
David Hill 2021-4-20
A=[1 1;10 45;1 3;10 15];
b=[250;24000;3360;1440];
A\b

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