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## anonymous one year ago Find the first six terms of the sequence. a1 = -3, an = 2 ● an-1

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1. anonymous

if I help will you give me a medal

2. anonymous

alright

3. anonymous

ok so I will work this out with you is that ok or do u want a direct aswer

4. anonymous

work it out

5. Nnesha

doesn't matter if they want or nah :-)

6. anonymous

ok :) so we start with -3 first and whats next to it an = -2 correct so if a1 = -3 and an = -2 then we know we have different orders of operations to work with. and fianally at the end we have an = -1 and again we find out we have a third different order of operation. so the next three will be between 1-3 so positive 3 positive 2 and positive 1 :)

7. anonymous

These are my answer choices. a. -6, -12, -24, -48, -96, -192 b. -3, -6, -12, -24, -48, -96 c. 0, 2, -6, -4, -2, 0 d. -3, -6, -4, -2, 0, 2

8. Nnesha

a_n is not just 2 it's $\huge\rm a_n = 2 \times a_{n-1}$

9. anonymous

can you choose multiple of them

10. Nnesha

n = next term so to find 2nd term replace n by 2

11. anonymous

so what is a

12. anonymous

can you choose multiple answers

13. anonymous

no

14. Nnesha

$\huge\rm a_n = 2 \times a_{\color{Red}{n}-1}$ a_1 is first term

15. Nnesha

given is first term which is -3 so to find 2nd term replace n by 2 $\huge\rm a_2 = 2 \times a_{\color{Red}{2}-1}$ 2-1 = 1 now its become a_1 so replace a_1 by -3

16. anonymous

okay? can you keep going?

17. Nnesha

$\huge\rm a_2 = 2 \times a_{\color{Red}{2}-1}$ $\large \rm a_2 = 2 \times a_{\color{Red}{_1}}$ a_1 is -3 so plug in $\large\rm a_2 = 2 \times -3$ a_2 = - 2nd term is -6 now try other 3 terms

18. Nnesha

try to find*

19. Nnesha

replace n by 3 for 3rd term replace n by 4 for 4th term and replace n by 5 for 5th term

20. anonymous

so then you do a_3=2*-6 and get -12

21. anonymous

right?

22. Nnesha

yep right

23. anonymous

yay thank you sooo much!!!!

24. Nnesha

np :-)

25. anonymous

how are you with summation notation?

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