Question

Use summation rules to compute the sum.

Answer 1

this is summation rule

Answer 2

wow so i just follow that?

Answer 3

ya but you have 3i-1 right?

Answer 4

yes

Answer 5

so u r using the formula with i only

Answer 6

ohh ok so the first one?

Answer 7

yes

Answer 8

but there's a problem we got 3 multiplied by i and 1 added to it right?

Answer 9

yes

Answer 10

so what we will do is