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liliy
 3 years ago
find the value of the sum:
summation j=0 until j=8; (1+(1)^j))
liliy
 3 years ago
find the value of the sum: summation j=0 until j=8; (1+(1)^j))

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KonradZuse
 3 years ago
Best ResponseYou've already chosen the best response.1\[\sum_{0}^{8} (1+(1)^j)\]

liliy
 3 years ago
Best ResponseYou've already chosen the best response.0we need to use the formula for progresion. but i dont know how. bec the formula is : n(a sub 1 +a sub n) /2

liliy
 3 years ago
Best ResponseYou've already chosen the best response.0but is the zero considered ":a sub 1 or a sub 0,?"

KonradZuse
 3 years ago
Best ResponseYou've already chosen the best response.1Idk why you need a formula... unless I'm missing something.. You should be able to just plug in and get your answer...

liliy
 3 years ago
Best ResponseYou've already chosen the best response.0the instructions say use th formla

KonradZuse
 3 years ago
Best ResponseYou've already chosen the best response.1n should be 8, but not too sure about a, maybe the current #? I haven't done this in awhile :P.

liliy
 3 years ago
Best ResponseYou've already chosen the best response.0wait, without the formula the answer is 10?

liliy
 3 years ago
Best ResponseYou've already chosen the best response.0hmm so this formula is not giving me that answer. no matter which numbers i put in.
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