anonymous
  • anonymous
HELP!! n an 1 4 2 12 3 28 4 60 Which recursive equation represents the pattern? an = an – 1 + 2n an = an – 1 + 2(n + 1) an = an – 1 + 2n + 1 an = an – 1 + 2n + 1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
All you need to do is to plug in both a and an and see which one is equal.
anonymous
  • anonymous
yeah, but what is the equation?
mathstudent55
  • mathstudent55
12 - 4 = 8 28 - 12 = 16 60 - 28 = 32 Why are the third and fourth choices equal?

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anonymous
  • anonymous
You find which one is the right one by trying every equation till you get both sides equal.
mathstudent55
  • mathstudent55
Are some n's and (n-1)'s subscripts and exponents?
anonymous
  • anonymous
I'm still a lot confused on what the heck to do...
anonymous
  • anonymous
@mathstudent55 What do I subtract 60 by?
anonymous
  • anonymous
Grr.. Im so confused!! :/
mathstudent55
  • mathstudent55
n an 1 4 2 12 4 + 8 4 + 2^3 3 28 12 + 16 12 + 2^4 4 60 28 + 32 28 + 2^5 Do you see a pattern? Each term, an, is obtained by adding the previous term to 2 to the power n + 1
mathstudent55
  • mathstudent55
The way you wrote the choices makes no sense. There must be some exponents and subscripts there. You wrote everything as if it were simple numbers.
mathstudent55
  • mathstudent55
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mathstudent55
  • mathstudent55
None of the choices you gave represent the recursive rule. Also, the third and fourth choices in your post are the same.
anonymous
  • anonymous
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anonymous
  • anonymous
oops, sorry about that. :/
mathstudent55
  • mathstudent55
Look at last choice. It's what I wrote. Look again at the pattern I wrote, and see how I arrived at choice #4

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