CBSE · Class 6-12

Back to Arithmetic Progressions

Class 10 · Mathematics (Basic) · Unit 5: Arithmetic Progressions

General Term ($n$-th term)

Lesson 2 of 6

The

n

-th term is

a_n = a + (n-1)d

. Use this to find any term, or to check membership: given a value

x

, solve

x = a + (n-1)d

for

n

; if

n

is a positive integer,

x

belongs to the AP.

Definition and Notation

Sum of First n Terms

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