b1=4, q=-3. Найдите S4=?
Sn = (b1 * (q^n - 1))/ q -1
S4 = (4 (80) ) / -4 = -80
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Sn = (b1 * (q^n - 1))/ q -1
S4 = (4 (80) ) / -4 = -80