Arithmetic Progressions Flashcards
1
Q
What is an A.P?
A
An arithmetic progression is a list if numbers in which each term is obtained by adding a fixed number ‘d’ to the preceding term, except the first term.
2
Q
What is ‘d’?
A
Common difference.
3
Q
General form of an A.P.
A
a, a + d, a + 2d…
4
Q
‘n’th term of an A.P. can be found by?
A
a(n) = a + (n - 1)*d
5
Q
Sum of the terms of an A.P. can be found by?
A
S = n/2 [2a + (n-1)*d]
6
Q
Sum of the terms of an A.P when the last term is given?
A
S = n/2 [a + l]
