Question

Find the number of terms in each series, the first term, and the last term. The evaluate the sum.

I'll put the equation in one send. @kevkool97

Answer 1

*One second

Answer 2

\[\sum_{n=2}^{10}(\frac{ 1 }{ 2 }n+3)\]

Answer 3

I have no idea how to do this..

Answer 4

put 1 in the equation u get the 1st term

Answer 5

Okay, so I just need to fill in 1 - 10 where "n" is?

Answer 6

First term being 3.5 ?

Answer 7

yah..

Answer 8

no...

Answer 9

Okay, I'll go throughout all 10 and then put up the last term. Let me know if it's right?

Answer 10

i'll get back to you... goin to take a bath

Answer 11

@sourwing Do you know how to do this? Can I check the last term with you?

Answer 12

I have the last term is 8.. I just did what the other guy said to.

Answer 13

*as 8

Answer 14

@math_genius123

Answer 15

http://hotmath.com/hotmath_help/topics/sum-of-the-first-n-terms-of-a-series/sum-of-the-first-n-terms-of-a-series-image001.gif

Use the formula to To find the sum of the first n terms of an arithmetic series

Answer 16

Is the first term not 3.5?

Answer 17

@nincompoop

Answer 18

substitute 2

Answer 19

and then substitute 10

Answer 20

u get 1st term and the last term

Answer 21

now check whether the series is in ap gp hp agp or whatever

Answer 22

and accordingly substitute in their respective (summation) formulae