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torisob [31]
3 years ago
7

Use the initial term and the recursive formula to find an explicit formula for the sequence an. Write your answer in simplest fo

rm. a1 = – 25 an = an–1–14 an=
Mathematics
1 answer:
deff fn [24]3 years ago
4 0

Given :

a_1=-25 .

a_n=a_{n-1}-14 .

To Find :

The general equation of a_n .

Solution :

We know , when difference between any two consecutive terms in an A.P is equal , then the series is in arithmetic progression .

Now , common difference ,

d=a_n-a_{n-1}\\\\d=-14

Also , first term is -25 .

Now , general term of an A.P is given by :

a_n=a+(n-1)d\\\\a_n=-25+(n-1)(-14)\\\\a_n=-25-14n+14\\\\a_n= -11-14n

Hence , this is the required solution .

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