Balance
$Cost(X, Y) $
$$ J_alpha(x) = sum_{m=0}^infty frac{(-1)^m}{m! Gamma (m + alpha + 1)} {left({ frac{x}{2} } ight)}^{2m + alpha} ext {，行内公式示例} $$
egin{align} otag dot{x}&=mathbf{A}x+mathbf{B}u\ y&=egin{bmatrix}1&0\ 0&1end{bmatrix}x+egin{bmatrix}1&0\ 0&1end{bmatrix}u end{align}