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## Algebra II

### Course: Algebra II>Unit 11

Lesson 3: Cheklangan arifmetik progressiya yigʻindisi

# Arifmetik progressiya yigʻindisiga doir yozma topshiriq

Chekli arifmetik progressiya yigʻindisini hisoblashga oid bir necha misollarni yechishga urinib koʻring.

# Arifmetik progressiya yigʻindisini hisoblashni mashq qiling

## 1-mashq

sum, start subscript, k, equals, 1, end subscript, start superscript, 275, end superscript, left parenthesis, minus, 5, k, plus, 12, right parenthesis, equals

## 2-masala

a, start subscript, i, end subscript arifmetik progressiya formula orqali aniqlanadi:
a, start subscript, 1, end subscript, equals, 2
a, start subscript, i, end subscript, equals, a, start subscript, i, minus, 1, end subscript, minus, 3