anonymous
  • anonymous
@hartnn Write the sum using summation notation, assuming the suggested pattern continues. 5 - 15 + 45 - 135 + ...
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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hartnn
  • hartnn
do you see any pattern in that?? like if you multiply/divide current term with a certain number, you get the next term??
anonymous
  • anonymous
the cerrent term multiplied by 3
hartnn
  • hartnn
if you multiply it by just a 3, then you will get all positive numbers, try multiplying by -3!

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anonymous
  • anonymous
so \[\sum_{n=0}^{\infty}5(-3)^n\]
anonymous
  • anonymous
?
hartnn
  • hartnn
so, using a summation notation in general, \(\Large \sum \limits_{n=0}^{n=\infty } f(n)\) oh you already got it!
anonymous
  • anonymous
ok thanks!
hartnn
  • hartnn
yes thats correct :)

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