the first and last term of an ap are a and l respectively show that the sum of the n^th term from the beginning and n^th term from the end is (a + l). i mark as brainlist who solve it with full sollution
Answers
Answered by
0
Let the first term of the AP be a
and the common difference be d
Thus the n^th term of the AP is An= l = a + (n-1)d
The n^th term from the beggining is 'l' and the n^th term from the end is 'a'.
The sum of two term is a+(n-1)d+a=l+a
and the common difference be d
Thus the n^th term of the AP is An= l = a + (n-1)d
The n^th term from the beggining is 'l' and the n^th term from the end is 'a'.
The sum of two term is a+(n-1)d+a=l+a
Similar questions