Evaluate(sum_{r=1}raise to power 4 r raise to power 2)
Answers
Answered by
0
Answer:
Please repost this question in good manner.
Answered by
1
Answer:
For any x≠1 we know
xn+1−1=(x−1)(xn+xn−1+…+1).
So
∑k=0nxk=xn+1−1x−1
Now since your sum starts at 41 not 40, you need to subtract 1 in this case to see that
∑k=1104k=(411−1)/(4−1)−1
Similar questions
Math,
5 months ago
Computer Science,
5 months ago
Biology,
10 months ago
Social Sciences,
10 months ago
Social Sciences,
1 year ago
Business Studies,
1 year ago