I have a code and it keep saying "invalid expression. when calling a function or indexing a variable, use parentheses. otherwise check for mismatched delimiters.

i1 = 1.11 * 10^-3;
i2 = - 7.4 * 10^-3;
i3 = 1.85 * 10^-3;


syms i1 i2 i3
eq1 = 2000 * i1 + 1500 * i3; 
eq2 = 3000 * i2 - 1500 * i3; 
eq3 = i1 - i2 -i3; 

[A, B] = equationsToMatrix([eq1, eq2, eq3, [i1, i2, i3]);
x = linsolve(A, B);
x = [i1, i2, i3];

Answer 1

[the cyclist]

This line is where the problem is ...

[A, B] = equationsToMatrix([eq1, eq2, eq3, [i1, i2, i3]);

Inside the parentheses, you have unpaired square brackets.

[Bevey]

Lol, I didn't noticeǃ Thank you.