In my problem , I have two variables, variable x(1,n) and vaiable y(1,n),respectively,

and I have a constraint ,namely the sum of the product of the corresponding elements in the two vectors is greater than 0,

sum(x.*y)>=0;
But the program went wrong
错误使用 .* (line 262)

Disciplined convex programming error:

Invalid quadratic form(s): not a square.

How should I handle such an expression in cvx?