Answer:
La diferencia simétrica de dos conjuntos A y B es el conjunto (A - B) ∪ (B - A) y se denota por A △ B. La parte sombreada del diagrama de Venn dado representa A △ B. A △ B es el conjunto de todos los elementos que pertenecen a A o B pero no a ambos.
Explanation:
Answer:
The present progressive, also called the present continuous, is formed with the verb BE conjugated in the simple present followed by a present participle. This is the formula: Subject + BE + (verb+ing). Before you continue, review these lessons: Verb BE | Present participle.
Explanation: