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2 years ago

PLEASE HELP WILL MARK BRAINLIEST!

Mathematics

2 answers:

pav-90 [236]2 years ago

7 0

Answer:

1, 5, 17, 53, 161

Step-by-step explanation:

Given:

$a_1=1$

$a_n=3a_{n-1}+2$

First five terms of the sequence:

$a_1=1$

$a_2=3a_1+2=3(1)+2=5$

$a_3=3a_2+2=3(5)+2=17$

$a_4=3a_3+2=3(17)+2=53$

$a_5=3a_4+2=3(53)+2=161$

igor_vitrenko [27]2 years ago

4 0

a_n=3a_n-1 +2

a_2

3a_1+2
3(1)+2
5

a_3

3a_2+2
3(5)+2
17

a_4

3a_3+2
51+2
53

a_5

3a_4+2
3(53)+2
161

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By using the cosine law you can fins a system of equation and then you can calculate the values of l1 and l2.

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