Question

даю 15 баллов!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

$\displaystyle\bf\\1 \ ; \ 3 \ ; \ 5 \ ; \ 7 \ ; \ 9 \ ...\\\\y_{n} =2n-1\\\\n=1 \ \ \Rightarrow \ \ y_{1} =2\cdot 1-1=1\\\\n=2 \ \ \Rightarrow \ \ y_{2} =2\cdot 2-1=3\\\\n=3\ \ \Rightarrow \ \ y_{3} =2\cdot 3-1=5\\\\n=4 \ \ \Rightarrow \ \ y_{4} =2\cdot 4-1=7\\\\n=5 \ \ \Rightarrow \ \ y_{5} =2\cdot 5-1=9$