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hawkfalcon Group TitleBest ResponseYou've already chosen the best response.0
let \[x1=6, x2=8,x3=9, x4=13. Evaluate m=\sum_{i=1}^{4}x1\]
 2 years ago

hawkfalcon Group TitleBest ResponseYou've already chosen the best response.0
Then use the values of x1, x2, x3, x4, and m to evaluate \[\frac{ \sum_{i=1}^{4}(x1=m)^2 }{4 }\]
 2 years ago

hawkfalcon Group TitleBest ResponseYou've already chosen the best response.0
Noone?:(
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
Isn't the first equation just telling you to add up x1, x2, x3 and x4...or am I missing something?
 2 years ago

hawkfalcon Group TitleBest ResponseYou've already chosen the best response.0
no, xsubscript 1
 2 years ago

Mikael Group TitleBest ResponseYou've already chosen the best response.0
Hi there, the first just asks you their sum
 2 years ago

hawkfalcon Group TitleBest ResponseYou've already chosen the best response.0
Wait what seriously?
 2 years ago

hawkfalcon Group TitleBest ResponseYou've already chosen the best response.0
The e thingy with the i = 1 is saying add them up?
 2 years ago

Mikael Group TitleBest ResponseYou've already chosen the best response.0
You simply misread
 2 years ago

Mikael Group TitleBest ResponseYou've already chosen the best response.0
the "thingy" is subscript i (small hard to read ;) )
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
just add them. I think the equation should read:\[\sum_{i=1}^{4}x_i\]
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
where m is the sum.
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
The second equation asks you to take the sum of the squares of x1, x2, x3 and x4
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
and then divide by four :)
 2 years ago

hawkfalcon Group TitleBest ResponseYou've already chosen the best response.0
sorry, i couldn't connect. It is a 1, not an i.
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
Well, that is kind of a strange question. Because, if x1=6, then\[\sum_{i=1}^{4}6=4(6)=24\]
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
Similarly,\[\frac{\sum_{i=1}^{4}(6)^2}{4}=\frac{4(36)}{4}=36\]
 2 years ago
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