Question

Find 7th term of AP 1/4,-1/4,-3/4,-5/4.........

Answer 1

Step-by-step explanation:

a1=1/4

a2=-1/4

d=a2-a1

d=-1/4-1/4=-1/2

a7=a1+6d

a7=1/4+6*(-1/2)

a7=-13/4

Answer 2

Answer:

7th term is ‌13⁄4‌

Step-by-step explanation:

In AP series nth term is aₙ = a₁ + d(n − 1) Where a₁ is the first term of the series and d is the common room difference.

now, the two terms given are

a₁ = ¼ and a₂ =−¼  So, d = a₂ − a₁=¼+¼ =‌ 2⁄4‌ = ½

So,7 th term a₇ = a₁ + (n − 1)d = ¼+(7-1)x(½)= ‌13⁄4‌

Here applied formula is aₙ = a₁ + d(n − 1)

This is a formula Arithmetic Progression