Question

4+6+8+10+...+28= ?
Express the sum using summation notation. k=1

Answer 1

k=4
k+2, k+4, k+6, k+8......?

Answer 2

oh wait my bad use k=1 lol

Answer 3

\[
\sum_{k=1}^{13} 2k+2
\]

Answer 4

k he is probably right, sorry I haven't learnt this b4.

Answer 5

that's incorrect.

Answer 6

NEVERMIND lol! I forgot to put (2k+2) instead of 2k+2.

Answer 7

haha k