Why do I get an error when I try to use the solve function?

When I type the following command in matlab >> [x,y] = solve('x+2*y=4','2*x - y=3'),

I get the following error

Check for incorrect argument data type or missing argument in call to function 'solve'.

I was hoping someone could help me fix this. Thanks.

Answer 1

[Star Strider]

The quoted character array notationi may no longer be usable.

Try this isntead —

syms x y 
[x,y] = solve(x+2*y == 4, 2*x - y == 3),

x = 

2

y = 

1

.

Answer 2

[Paul]

solve() requires the inputs to be Symbolic Math objects

syms x y
[x,y] = solve(x + 2*y == 4, 2*x - y == 3)  % note the use of == as required to define an equation

x = 

2

y = 

1