Which is the function to solve the positive definite equation of coefficient matrix with square root and improved square root in MATLAB?

L = ldl(A)[L,D] = ldl(A)[L,D,P] = ldl(A)[L,D,p] = ldl(A,'vector')[U,D,P] = ldl(A,'upper')[U,D,p] = ldl(A,'upper','vector')[L,D,P,S] = ldl(A)[L,D,P,S] = LDL(A,THRESH)[U,D,p,S] = LDL(A,THRESH,'upper','v...

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