pls help iterative thingys

[silk monolith]

idk how to work out u2 an u3

[manic shore]

$u_1 = \frac{4}{u_{2} -1}$

[rugged wigeon]

clarence

[silk monolith]

huh

wait so i put u1 in u2

[manic shore]

u1 in u1

lol

then solve for u2

[silk monolith]

4 / 9 -1 ?

[odd harbor]

it says $u*{n+1}*$

[manic shore]

It looks like a -

[odd harbor]

not enough toner probs

[silk monolith]

how do i wok out n

[rugged wigeon]

Zaki

[manic shore]

does it say

[silk monolith]

no

[odd harbor]

how the fuck do subscript

[manic shore]

u_n+1

or u_n-1

[silk monolith]

it just says u1 = 9 find u2 and u3

un - 1 = 4 / un - 1

[odd harbor]

follow the iterative process

if n is 1

[silk monolith]

is n 1

[odd harbor]

then n+1 is 2

[silk monolith]

is it 8

[manic shore]

it says -

[silk monolith]

wair is n 10

[odd harbor]

u2 should be 0.5

[silk monolith]

how di u get 05

0.5

[odd harbor]

$u_n = u_1 = 9$
$u_{n+1} = u_2$

[rugged wigeon]

Zaki

[odd harbor]

how the heck do u newline

[silk monolith]

idk 😔

[odd harbor]

then sub un into the iterative formula

[silk monolith]

what is u n

[odd harbor]

n just means any number

for the first iteration un will be ur first value

which is u1 which is 9

[silk monolith]

okay

😭

[odd harbor]

so do $\frac{4}{9-1}$

[rugged wigeon]

Zaki

[odd harbor]

that will give u u2

then sub u2 as n

[silk monolith]

omg

[odd harbor]

so n+1 will be u3

and that way u can find u3

[silk monolith]

huhh

wait so whihc number is n

is it just x 2

[odd harbor]

ur just subbing the new value u get as n each time

[silk monolith]

u2

4 / 0.5 + 1

[odd harbor]

-1 not + 1

[silk monolith]

why is it - 1

[odd harbor]

cos the iterative formula says un-1 for denominator

[silk monolith]

ookay

ixs it - 8

[odd harbor]

should be