Detailed Instructions: This task is about translating a given English language sentence to Spanish.
Problem:Notice, that all of the odd degree terms have canceled out because of the alternating sine associated with E to the minus X. If we want to write this in summation notation, we would get the sum, k goes from zero to infinity X to the 2k over 2K factorial.
Solution:
Aviso, que todos los del grado impar términos han cancelado debido al alternancia seno asociado con E negativo X. Si queremos escribir esto en notación de sumatoria, nos reuníamos la suma, k va de cero a infinito X para el factorial de k más de 2 K 2.