frac专题

$L(x) = (\frac{1}{2}x^HAx-b^Hx)^2, x\in C^{n \times 1}$是凸的

L ( x ) = ( 1 2 x H A x − b H x ) 2 , x ∈ C n × 1 L(x) = (\frac{1}{2}x^HAx-b^Hx)^2, x\in C^{n \times 1} L(x)=(21​xHAx−bHx)2,x∈Cn×1是凸的 已知: L ( x ) = ( 1 2 x H A x − b H x ) 2 , x ∈ C n × 1 L(x) =