If $$ \frac{b_1}{a_1}, \frac{b_2}{a_2}, \dots, \frac{b_n}{a_n} $$ lies within $[\alpha, \beta]$, does $\frac{\sum_{i=1}^nb_i}{\sum_{i=1}^na_i}$ lies within the same range? (Given that $\sum_{i=1}^na_i \neq 0$.) If the answer is no, what about the situation that $a_n\gt 0$?
Asked
Active
Viewed 30 times
0
-
This is hard to read. here is a tutorial on formatting for this site. – lulu Mar 09 '20 at 12:05
-
Also: https://math.stackexchange.com/q/205654/42969 – Martin R Mar 09 '20 at 12:11