Đại số Ví dụ

$A = (1, 2, 3)$ , $B = (6, 7, 8, 9)$

Bước 1

$A$ is not a subset of $B$ because $A$ is not contained within $B$ .

$A$ is not a subset of $B$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$