Question

how would i state the domain for this:
f(x) = - 2 cot 3x

Answer 1

is that a 3x or cot^3 (x)

Answer 2

3x

Answer 3

let's say U = 3x.

Y = -2 cot (U).

Do you remember the identity of cot (U) =

Answer 4

?

Answer 5

@kirarittgers

Answer 6

no i dont know what that means

Answer 7

cot (U) = \[\frac{ \cos (u) }{ \sin(u) }\]

Answer 8

oh yeah i knew that

Answer 9

but what do i do with that

Answer 10

;) now, to find out your domain we have to avoid \[\frac{ 0 }{ 0 }\]

Answer 11

cause \[\frac{ 0 }{ 0 }\] doesn't make sense in math is jut not allowed

Answer 12

no shh i really knew that i just didnt know what you were asking and i still know that what i dont understan is how to state it

Answer 13

so we need to avoid those values tha makes: \[\frac{ \cos u }{ \sin u }\]

Answer 14

he gave you the identity, now he's trying to avoid sin U where sin U = 0 so that the function is undefined

Answer 15

0 over o

Answer 16

like i know it cant equal pi/3 or any other vertical asymtope but i dont know how to write that

Answer 17

i know the values it cant equal though i need to know how to write it

Answer 18

well it is getting harder to explain LOL

Answer 19

Do you have how to graph that function ?

Answer 20

how bout you just tell me the answer lol because i already know everything i dont need explaining i need to know how its supposed to be writen

Answer 21

yes i do

Answer 22

ive already graphed it

Answer 23

do you understand what im asking like you know how you write it in parenthesis i need to know how im supposed to put the values in there

Answer 24

of course i do , but what i cannot do, here, is just give ramdom answers

Answer 25

its not random but oh well