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Chapter 12: Q 12.43. (page 1188)

Write the first five terms of the sequence where the first term is 7 and the common ratio is r=-3.

Short Answer

Expert verified

First five terms are7,-21,63,-189,567.

Step by step solution

01

Step 1. Write the first five terms of the sequence.

Let a,rdenote the first and the common ratio respectively.

a=7r=-3

02

Step 2. Write the first five terms of the sequence.

a2=7-32-1=-21a3=7-33-1=63a4=7-34-1=-189a5=7-35-1=567

So, the first five terms are

7,-21,63,-189,567

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