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anonymous
 one year ago
Write the sum using summation notation, assuming the suggested pattern continues.
4 + 5 + 14 + 23 + ... + 131
anonymous
 one year ago
Write the sum using summation notation, assuming the suggested pattern continues. 4 + 5 + 14 + 23 + ... + 131

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This is my answer. \[\sum_{n=0}^{15} (4+9n)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What's the difference between finite and infinite?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Like how do I determine if it is infinite or finite?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Your answer is correct. And it's finite, because upper limit is not infinity. You have infinite series if you have something like \(\displaystyle\sum_{i=0}^\infty\dfrac1i\) (See the infinity symbol?) Is that's what you are asking?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Infinite series is series where you have to add and add and add, perform addition indefinitely.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436566743299:dw

geerky42
 one year ago
Best ResponseYou've already chosen the best response.21, 2, 3... is infinite, because there is no "end." You just keeping counting and counting. 1, 2, 3, ..., 10 is finite, because you just count till you reach 10.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0One more thing, how would I find the sum of a geometric sequence? What is the easiest way, if there is?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh okay, I just need to be sure about that. :)

misty1212
 one year ago
Best ResponseYou've already chosen the best response.0not to butt in, but i have seen these questions where even though it makes no sense, the upper limit is supposed to be infinity not saying it is correct, because it is not, but when it says "assuming the pattern continues" sometimes they want "infinity" at the top

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@misty1212 Yep, that is why it gets so confusing. :(

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Just link word "infinite" to "infinity" in your memory lol. You can learn more about geometric series here: http://www.mathsisfun.com/algebra/sequencessumsgeometric.html Just scroll down.

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2About "suggested pattern continues."

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2That mean anything in "..." in any sequence, they just want you to know that patterm remain the same in "...". So if you have something like 1, 2, 3, ..., 6, then by "suggested pattern continues." you would know that entire sequence is 1, 2, 3, *4, 5,* 6 (or at least how sequence behaves), and not 1, 2, 3, *1982374, 123, 64,* 6 something get random here, you know?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@geerky42 That makes it so much clearer! Thanks! :)

geerky42
 one year ago
Best ResponseYou've already chosen the best response.2Glad I cleared that up for you :)
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