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How can I rewrite the sum's suing Sigma Notation for:
2  2^2 + 2^3 2^4 +2^5
I know the reoccuring number is going to be 2 which goes to the right of the sigma. on the bottom of sigma it would be 1, and top of sigma would be 5 right?
 one year ago
 one year ago
How can I rewrite the sum's suing Sigma Notation for: 2  2^2 + 2^3 2^4 +2^5 I know the reoccuring number is going to be 2 which goes to the right of the sigma. on the bottom of sigma it would be 1, and top of sigma would be 5 right?
 one year ago
 one year ago

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lilsis76Best ResponseYou've already chosen the best response.0
dw:1353786244962:dw
 one year ago

cnkndBest ResponseYou've already chosen the best response.2
\[\sum_{n=0}^{4}2(2)^n\] is one way of writing it.
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
oh. so that (2), is that how it would go from negative to positive?
 one year ago

cnkndBest ResponseYou've already chosen the best response.2
expand what i wrote and check for yourself
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
okay: 2^0 = 0 *2 = 0 2^1=2*2=4 2^2=4*2=8 2^3=8*2=16
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
@cnknd is this how it would go?
 one year ago

cnkndBest ResponseYou've already chosen the best response.2
ur doing the exponents wrong... this is basics...
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
dw:1353786706417:dwokay the first one would be>....< @cnknd
 one year ago

cnkndBest ResponseYou've already chosen the best response.2
in what i put down, the index n goes from 0 to 4... so it's 2(2)^0 + 2(2)^1 + 2(2)^2 + 2(2)^3 + 2(2)^4 which is 2(1) + 2(2) + 2(4) + 2(8) + 2(16)
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
OH SHOOT! i just noticed i started at 1. i just now noticed it starts at 0
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
okay okay, i got it now. it makes more sense starting at zero haha thank you. Medal for you :)
 one year ago
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