Hckyplayer8
Full Member
- Joined
- Jun 9, 2019
- Messages
- 269
This very basic sigma notation is a review so I believe I have a decent grasp on it. That said, I want to double check.
Basically the number on top of the sigma is the upper limit, the variable is the index to sum and the number at the bottom of the sigma is the lower limit.
So based on a1 = 3, a2=-1,a3=2 and a4=5, I have to plug the givens into the equations and then sum the values produced to come to the final answer.
Thus for part a, it is a straight plug in and sum the given which results in a final answer of 9.
For part b, you subsitute each given and complete the equation. Finally you sum those values which results in the final answer of 7.
Lastly for part c, you directly plug in the given to the numerator and then add 1 to ak (you add 1 before subsitution for the given...a1+1=a2) which results in the final answer of -31/10.
Basically the number on top of the sigma is the upper limit, the variable is the index to sum and the number at the bottom of the sigma is the lower limit.
So based on a1 = 3, a2=-1,a3=2 and a4=5, I have to plug the givens into the equations and then sum the values produced to come to the final answer.
Thus for part a, it is a straight plug in and sum the given which results in a final answer of 9.
For part b, you subsitute each given and complete the equation. Finally you sum those values which results in the final answer of 7.
Lastly for part c, you directly plug in the given to the numerator and then add 1 to ak (you add 1 before subsitution for the given...a1+1=a2) which results in the final answer of -31/10.
