20. tutoring session

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arithmetic and geometric


xiaoyk
how do you mess up
your spelling that bad


urmom
kys

xiaoyk
k guess you don't
need my help then

urmom
WHAT

NO STOP

jk!!!!!

i was just joking 😂😂😂

😂😂😆😆

😅😅😅

😓😓😓

i need your help pellase 😢


xiaoyk
ok just send me a photo
of the equation

urmom
okay 😆😆

(photo of some equation)

i've tried to solve this like a billion
times by now but it keeps on telling
me to try again 😢😢😢


xiaoyk
it might be bc your
answer is wrong

urmom
yeah that's why i'm asking
you for help rn 😆😆😆

xiaoyk
why don't you explain
how you've been solving
the equation

urmom
uhm 😅😅

ok i know that you have to
set up some equation but
idk which number goes
where so i've been guessing
and just hoping for the best

xiaoyk
oh 💀

better than not knowing
what to do at all ig

urmom
ikr 😇😇😆😆

xiaoyk
js remember that for the
arithmetic sequences the
equation is gonna be
an = a1 + (n-1)d

n is the value for what term
the problem tells you to go to

a1 is the first number
of the sequence

d is the common difference

urmom
what's a common difference


xiaoyk
the difference between a1 and a2

urmom
oh

and a2 is the second term
of the sequence??

xiaoyk
yeah

urmom
wait that actually makes
sm more sense

xiaoyk
good

for geometric the equation is
an = a1 • r^n-1

urmom
what does r stand for

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