Hallar el intervalo de términos comprendidos entre n = 10 y n = 15 de la progresión de termino general An = - 3?

Respuesta : El intervalo es ( - 42 ; - 27) y va de tres en tresExplicación paso a paso : Encontrar los términos entre n = 10 y n = 15Como es una progresión se considera que n es número natural, por ende se toma los números 10, 11, 12, 13, 14, 15 <img src="https://tex.z-dn.net/?f=A_n%3D%20-3%2An%2B3%5C%5C%5C%5C%5C%20A_%28_%7B10%7D_%29%3D-3%2A10%2B3%5Cto%20A_%28_%7B10%7D_%29%3D-30%2B3%5Cto%20A_%28_%7B10%7D_%29%3D-27%5C%5C%5C%5C%5C%20A_%28_%7B11%7D_%29%3D-3%2A11%2B3%5Cto%20A_%28_%7B11%7D_%29%3D-33%2B3%5Cto%20A_%28_%7B11%7D_%29%3D-30%5C%5C%5C%5C%5C%20A_%28_%7B12%7D_%29%3D-3%2A12%2B3%5Cto%20A_%28_%7B12%7D_%29%3D-36%2B3%5Cto%20A_%28_%7B12%7D_%29%3D-33%5C%5C%5C%5C%5C%20A_%28_%7B13%7D_%29%3D-3%2A13%2B3%5Cto%20A_%28_%7B13%7D_%29%3D-39%2B3%5Cto%20A_%28_%7B13%7D_%29%3D-36%5C%5C%5C%5C%5C%20A_%28_%7B14%7D_%29%3D-3%2A14%2B3%5Cto%20A_%28_%7B14%7D_%29%3D-42%2B3%5Cto%20A_%28_%7B14%7D_%29%3D-39%5C%5C%5C%5C%5C%20A_%28_%7B15%7D_%29%3D-3%2A15%2B3%5Cto%20A_%28_%7B15%7D_%29%3D-45%2B3%5Cto%20A_%28_%7B15%7D_%29%3D-42" />El intervalo es ( - 42 ; - 27) y va de tres en tresEspero que te sirva, salu2!