Asked by Anonymous
* What is the average of the first n positive even numbers?
Answers
Answered by
Steve
pair them up
2,2n
4,2n-2
6,2n-4
...
What is the average of each pair?
Or, consider their sum:
2+4+...+2n
= 2(1+2+...+n)
= 2*n(n+1)/2
= n(n+1)
So, what is the average of that sum?
2,2n
4,2n-2
6,2n-4
...
What is the average of each pair?
Or, consider their sum:
2+4+...+2n
= 2(1+2+...+n)
= 2*n(n+1)/2
= n(n+1)
So, what is the average of that sum?
Answered by
heh noob
my wife took all the kinds i will jump of a bridge
Answered by
heh noob
ME COOL KID PINEAPPLE
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.