Question

write a recursive definition for the sequence 8, 6, 4, 2

Answer 1

what would you respond if a 7th grader is trying to help you?

Answer 2

What?

Answer 3

wait isn't a recursive definition basically a order for the numbers? similar to equations for graphing?

Answer 4

no i am just curious....

Answer 5

cz it looks like you are in high school or above?

Answer 6

and i'm a freaking 7th grader

Answer 7

t = a - (n-1)*2
where,
t = term
a = first term of the sequence
n = place of term in the sequence

Answer 8

@PrincessTianaB did you understand it ?

Answer 9

aren't you just trying to find like a formula for the numbers? like so that you can continue the number chain or something?

Answer 10

Yes @Molly_Qian

Answer 11

not so much... how do you know which is term?

Answer 12

Formula is: t = a - (n-1)*2
now take somew example

Answer 13

*some

Answer 14

\[t _{n}=t_{n-1} +b \]
something like this?

Answer 15

@goformit100

Answer 16

note that in this recursion, n starts at 1 (but could start at 0). up to you

Answer 17

interesting....

Answer 18

Hence you got the sequence you required:
8, 6, 4, 2 ....

Answer 19

do you have to show work like that? it made it look harder than it is

Answer 20

a1 = 8; an= an-1 -2
a1 = 8; an=an -1 + 2
a1 = 2; an= an-1 + 8
a1 = 2; an=an-1 + 6



are my options, so would it be the second option?

Answer 21

to find first term of the sequence given by you,
t = a - (n-1)*2
t_1 = 8 - (1 - 1)*2 = 8

to find first term of the sequence given by you,
t = a - (n-1)*2
t_2 = 8 - (2 - 1)*2 = 6

to find first term of the sequence given by you,
t = a - (n-1)*2
t_3 = 8 - (3 - 1)*2 = 4

to find first term of the sequence given by you,
t = a - (n-1)*2
t_4 = 8 - (4 - 1)*2 = 2

here n is showing the position of term you want yo find.

Answer 22

Would it be the second option since 8 is the first term and it adds two?

Answer 23

i typed nothing
\(\color{white}{I~think~it's~D}\)

Answer 24

it adds two?

Answer 25

@goformit100

Answer 26

or minus two?

Answer 27

Let me check

Answer 28

stop it greta!

Answer 29

Stop curing me out greta

Answer 30

or \(\times -1 +6\)?

Answer 31

what? @ees12

Answer 32

^^^

Answer 33

some guy named greta456 is sending me cursing messages

Answer 34

\(\color{white}{I~still~think~it~is~D}\)

Answer 35

@PrincessTianaB the options you gave is not clear. can you plz provide the screen short of the answers

Answer 36

I mean options

Answer 37

ohh okay. haha i was confused.

Answer 38

@greta456 ? he is not online rn tho

Answer 39

okay

Answer 40

What the heck, he's sending me messages right now.

Answer 41

tag him. right on here or on os feedback or something. report him.

Answer 42

\(\color{white}{I'm~pretty~sure~it's~D}\)

Answer 43

he sent me this, A box contains 15 cards. There are 5 red cards labeled 1, 2, 3, 4, and 5. There are 5 blue cards labeled 1, 2, 3, 4, and 5. There are 5 green cards labeled 1, 2, 3, 4, and 5. One card is drawn from the box.

What is the probability that it is a green card with an even number or a blue card?

Answer 44

oops not that, I forgot to copy it, he sent me this https://www.youtube.com/watch?v=-yE_v6vN9UE

Answer 45

ew.

Answer 46

8, 6, 4, 2

you can get next term by subtracting 2 from present term, so the recursive definition can be
\[a_{n+1} = a_n-2\\a_1 = 8\]

Answer 47

@goformit100

Answer 48

\(\color{white}{LAST~CHOICE}\)

Answer 49

So it would be the first option, @rational ?

Answer 50

https://www.youtube.com/watch?v=zqPN4UbnlWg

Answer 51

He sent me that too.

Answer 52

Somehow I am not able to see options ?

Answer 53

Yes first option :)

Answer 54

\(\color{blue}{\text{Originally Posted by}}\) @ees12
some guy named greta456 is sending me cursing messages
\(\color{blue}{\text{End of Quote}}\)
please don't spamm this post where other users are trying to work
you have " report" oor "block" option
thanks

Answer 55

Np barbie

Answer 56

Thank you @rational (:

Answer 57

yes they are correct