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Title: Class 10 maths chapter 5 arthematic progression
Description: Best notes ever
Description: Best notes ever
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Key Notes
Chapter-05
Arithmetic Progression
•
Sequence: A set of numbers arranged in some definite order and formed according to some
rules is called a sequence
...
•
Arithmetic Progression: A sequence in which the difference obtained by subtracting any
term from its preceding term is constant throughout, is called an arithmetic sequence or
arithmetic progression (A
...
The general form of an A
...
is a, a + d, a + 2d,
...
•
General Term: If ‘a’ is the first term and ‘d’ is common difference in an A
...
, then n th term
(general term) is given by an = a +
•
(n
– 1) d
...
Three quantities being
given, the fourth can be find out by using the above relation
...
Therefore, to determine these two unknowns, we have to solve both the conditions
(equations) linearly
...
P
...
P
...
P
...
(ii) If Sn is given, then n th term is given by a n = s n − s n −1
(iii) If a, b, c is in A
...
, then 2b = a + c
...
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...
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Title: Class 10 maths chapter 5 arthematic progression
Description: Best notes ever
Description: Best notes ever