Question

№222222222222222222222

Answer 1

Ответ:

Объяснение:

!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

$a_{n}=2n-3\\\\n=1:\ \ a_1=2\cdot 1-3=-1\\\\n=2:\ \ a_2=2\cdot 2-3=1\\\\n=3:\ \ a_3=2\cdot 3-3=3\\..................................................\\n=10:\ \ a_{10}=2\cdot 10-3=17\\\\\{a_{n}\}:\ -1\, ,\, 1\, ,\, 3\, ,\, 5\, ,\, 7\, ,\, 9\, ,\, 11\, ,\, 13\, ,\, 15\, ,\, 17\, .$