## anonymous 5 years ago write the following in summation notation: 1/2+2/4+3/8+4/16+5/32+6/64

1. bahrom7893

$\sum_{k=1}^{6}k/2^k$

2. bahrom7893

check it, see if it works..

3. bahrom7893

1/2 + 2/4 + 3/8 + 4/16 + 5/32 + 6/64, yeah it does..

4. bahrom7893

Please click on become a fan if I helped, I really want to get to the next level!! Thanks =)

5. anonymous

Thank you!!

6. anonymous

how do i become a fan?

7. anonymous

$\sum_{i-3}^{7} 4i ^{2}$ also do you know how to evaluate this??

8. anonymous

4(3)^2+4(4)^2+4(5)^2 ... until 4(7)^2