1) Найдите сумму первых 20 членов арифметической прогресси, если а7=18,5, а17=-26,5 2)а1=2, д=-5. найдите а9
3)а21=31,д=1,5, нгайдитеа1
Please enter comments
Please enter your name.
Please enter the correct email address.
You must agree before submitting.

Copyright © 2024 SCHOLAR.TIPS - All rights reserved.