Question

http://i.imgur.com/1u0QE.png
http://i.imgur.com/WJ6wt.png

Can anyone teach me how I go about solving this?

Answer 1

Okay I figured out the second one myself but I'm still having problem with the first one

Answer 2

your job is to add right? i think you need partial fractions for this one

Answer 3

Okay I did partial fraction and god B = 1 and A = -1
What do I do next?

Answer 4

you get \(\frac{2}{(n+2)(n+4)}=\frac{1}{n+2}-\frac{1}{n+4}\) a nice telescoping sum

Answer 5

so i think what you need is to find the first two terms that do not get killed off later

Answer 6

you good from there?

Answer 7

is the answer 3/4?

Answer 8

no i get \(\frac{7}{12}\)

Answer 9

start replacing n by 1, 2, 3, 4, ... and see what you get

Answer 10

everything else cancels out except (1/2) and (1/4)..am I doing something wrong..

Answer 11

oops I see my mistake

Answer 12

whew
i got everthing but \(\frac{1}{3}\) and \(\frac{1}{4}\)

Answer 13

yeah thanks! :)