Ask
your own question, for FREE!
Mathematics
8 Online
Help please
Still Need Help?
Join the QuestionCove community and study together with friends!
I can't get sigma x^2 for the set of 50 numbers
5500 + 9600
I have researched this a while ago. there is actually an algorithm that determines this value.\[\sum_{k=m}^{n}k^2=\frac{1}{3}((n+1)^3-m^3)-\frac{1}{2}((n+1)^2-m^2)+\frac{1}{6}((n+1)-m)\] in your case, m=1 and n=50. \[\sum_{k=1}^{50}k^2=\frac{1}{3}(51^3-1^3)-\frac{1}{2}(51^2-1^2)+\frac{1}{6}(51-1)\] \[a=51^3-1^3=(125000+3*2500+3*50+1)-1=132650\] \[b=51^2-1^2=(2500 + 2*50 + 1) -1=2600\] \[c=51-1=50\] \[\frac{1}{3}a-\frac{1}{2}b+\frac{1}{6}c=\frac{265300-7800+50}{6}=\frac{257550}{6}=42925\]
therefore the answer is 42925. message me for an algorithm for any polynomial
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
serenitystXrgazer:
Getting sent to anti gay christian covestion camp in a few weeks, any tips. guys i think im cooked.
Aubree:
Guys, what does love feel like? I've been getting a tight chest and when I talk to him my heart rate hangs out around 100-120 beats per min, and when he doe
thereneelg:
ok... anyone have advice?? ...I did Choir all throughout Middle school and have ALWAYS been put in Soprano those three years.
kamariana:
The Byzantine Procopius is known for (5 points) reconquering much of the old Roma
chuckD:
hellp!!! what does it mean to describe a scientist as skeptical Why is sceptical
DoltonCarlee:
So like do y'all know anything about the first world war?
thehearken:
anyone know how to explain this so its easier for me to understand? b(1)=2, b(n)=
3 hours ago
1 Reply
0 Medals
9 hours ago
10 Replies
2 Medals
2 days ago
6 Replies
1 Medal
3 days ago
0 Replies
0 Medals
3 days ago
2 Replies
1 Medal
2 days ago
2 Replies
0 Medals
2 days ago
5 Replies
2 Medals