Please help me type this constraint.

subject to

0.037*sqrt(B+C * x)’ * D * (B+C * x))+ E’*(B+C * x)<=0

the square root is the problem.

Please help me type this constraint.

subject to

0.037*sqrt(B+C * x)’ * D * (B+C * x))+ E’*(B+C * x)<=0

the square root is the problem.

If this is what you mean,

$$\sqrt{(B+Cx)^TD(B+Cx)}$$

then that is simply equal to

$$|F(B+Cx)|_2$$

where F satisfies F^TF=D. In other words, F is a square root of D, such as the symmetric square root returned by the `sqrtm`

function. The Cholesky factor returned by `chol`

will also work, as long as you make sure to get the right-hand factor.

With this rewrite in mind, this just becomes

`0.037 * norm(sqrtm(D)*(B+C*x)) + E'*(B+C*x) <= 0`

Thanks…using the sqrtm() gives me error because D is positive semidefinite so i decided to go with this

$$0.037 * norm(D^{1/2}*(B+C*x)) + E’*(B+C*x) <= 0$$

It still satisfies the $$F^{T}F=D $$ .