Question

If a given A.P. ,if the ath term is b and bth term is a the nth term is .........​

Answer 1

Answer:

nth term will be m.l hope it will be helpful for you

Answer 2

Answer:

Step-by-step explanation:

We know that the general formula of nth term of an AP is A+(n-1)d,

So,

If the last term is 'a' then the formula will be-

a = A+(a-1)d............(I)

Similarly, is the last term is 'b'day then the formula will be-

b = A+(b-1)d............(II)

Now, subtracting (II) from (I)

a-b = [A+(a-1)d] - [A+(b-1)d]

a-b = A+ad-d - [A+bd-d]

a-b = A+ad-d - A-bd+d

a-b = ad-bd

a-b = (a-b)d

Now, nth term will be "N"

N = A+(n-1)d

N = A+(n-1)1................. As, d=1

Therefore, N = A+n-1

Hence, nth term will be,

A+n-1