I have a code, but I have an error, please help

X=roots((1 2(l^2-s^2-2*l^2*cosd(th)^2)(l^2-s^2)^2))

Error: invalid expression. Check for missing multiplication operator, missing or unbalanced delimited,use brackets instead of parentheses.

[KSSV]

Check the expression inside root.

Answer 1

[Walter Roberson]

MATLAB has no implied multiplication at all. 2(l^2) is invalid syntax because there is no operation between the 2 and the (l^2)

Also, roots() must be passed a vector of values.

What could potentially be valid is

X=roots([1, 2, (l^2-s^2-2*l^2*cosd(th)^2), (l^2-s^2)^2] )

but I have no idea if that is what you wanted.