Question

Please help the ques is related to the chapter 'sequences'

Answer 1

please wait i am typing the ques

Answer 2

y

Answer 3

I'll give you the answer for 1, then see if we can get the rest:
\[a_n = \frac{-n}{2} + 5 \]
The first five elements would be:
\[ a_0, a_1, a_2, a_3, a_4\]
This means if n = 0, we plug in 0 for n:
\[ a_0 = \frac{-0}{2} + 5 = 5 \\
a_1 = \frac{-1}{2} + 5 = \frac{9}{2} \\
a_2 = \frac{8}{2} \\
a_3 = \frac{7}{2} \\
a_4 = \frac{6}{2} \]

Answer 4

@kmeis002 thanks for the ans but just a very short mistake. u should start from n=1 and end till n=5 according to my teahcer in school

Answer 5

can u please repeat the ans with the method i told u right now please

Answer 6

Well, so we know \( a_1, a_2, a_3, a_4\), you just have to find \(a_5\). How do you think we go about getting that?

Answer 7

yep

Answer 8

hey but wait

Answer 9

is n=1 how did u get 9/2

Answer 10

You just plug in 1 when you see an n, so:
\[\frac{-1}{2} + 5 = \frac{-1}{2} + \frac{10}{2} = \frac{-1 + 10}{2} = \frac{9}{2} \]

Answer 11

oh thanks for reminding me

Answer 12

so what would be n=5

Answer 13

Everytime you see an n, plug in 5, then calculate.

Answer 14

am i right

Answer 15

Correct!

Answer 16

No just repeat the process for different equations and n = 1, 2, 3, 4 ,5

Answer 17

no lets go to next one

Answer 18

*Now

Answer 19

can i try

Answer 20

of course, post your answers and I'll check

Answer 21

I may have to head out after that, so I may not be around. But if you get the second one right, I think you can do all of them.

Answer 22

am i right

Answer 23

looks perfect to me, good job

Answer 24

thanks