anonymous
  • anonymous
Please help!
Mathematics
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anonymous
  • anonymous
Please help!
Mathematics
schrodinger
  • schrodinger
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
what can /\TLAS can do for you?
anonymous
  • anonymous
What is the 20th term in the sequence that begins -2, 4, -8, 16...
anonymous
  • anonymous
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anonymous
  • anonymous
I know its multiplying by -2
anonymous
  • anonymous
it is a gp sereis
anonymous
  • anonymous
1st term is -2 2nd term is 4 . . . in this way nth term is (-1)^n*(2)^n so 20th term is (-1)^20*(2)^20
anonymous
  • anonymous
so its D?
anonymous
  • anonymous
@sourav_aich where did you get the -1 and the 2?
anonymous
  • anonymous
you see each alternate term has negative in front of it and 2 is the common ratio

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