Question

5.Does the sequence -1,-1,-1,-1.... form an AP? Justify your answe​

Answer 1

Answer:

• Yes the sequence forms an A.P.
• AP or arithmetic progression is a sequence in which difference between each term remains same.
• In this sequence, difference between each term is 0. So, the sequence forms an A.P.
• An AP can have common difference 0.

Learn More:

1.

Nth term of an A.P = a + (n - 1)d

Where,

• a = First term.
• d = Common difference.

2.

Difference between any two terms = a + (n - m)d

Where,

• n = nth term.
• m = mth term.

3.

If an A.P. has odd number of terms (n), then -

→ Middle term = (n + 1)/2th term.

If it has even number of terms (n), then it has two middle terms – nth term and (n/2 + 1)th term.

4.

If a, b and c are three consecutive terms in an A.P., then,

→ 2b = a + c

5.

Sum of first n terms = n/2[2a + (n - 1)d]