The third one is relevant (servicio de mensajes escritos y precio del plan).
Answer:
D
Explanation:It’s Riemann negation
Answer:
, 
Explanation:
El área total de la lamina es 
(The total area of the sheet is ). La función asociada al área sobrante es (The function associated with the remaining area is):
El radio máximo está asociado con la longitud más corta de la lámina. Asúmase que 
(The maximum radius is associated with the smallest length of the sheet. Let assume that ):
La longitud necesaria de hule de protección es igual a: (The required length of proctection rubber is equal to)
Answer C is the affirmative formal one. Good luck!
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