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

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JV
JV 2022-3-20
回答： Star Strider 2022-3-20
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.

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采纳的回答

Star Strider
Star Strider 2022-3-20
Ran in:
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
.

更多回答（1 个）

Paul
Paul 2022-3-20
Ran in:
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

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