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https://i.gyazo.com/600783c4843f253829c56f7ccc1a8a91.png

\[f(x)=\frac{1}{x-8}\]?

yea.

you know what it looks like?

not exactly

has a vertical asymptote at \(x=8\) for sure

did you graph these in some pre-calc class?

this is for my final assignment for my online class

actually we can cheat easily, do it without knowing the graph

oh well if it is on line lets cheat like crazy

http://www.wolframalpha.com/input/?i=1%2F%28x-8%29

you and i would become good friends lol

you can see that as \(x\to 8^-\) it goes to \(-\infty\)

you can see that from the picture right?

yea

ok
my motto "cheating is learning"

awesome. that is now my new motto

all rights reserved

wait so is x=8 the only one?

yes of course

only place where the denominator would be zero

ok thank you so much

yw

and is it ok if you can help me with one last question

ok one last question

Find the fifth roots of 243(cos 240° + i sin 240°)

lord i thought it as going to be a short one

ok first the fifth root of 243 is 3 i think

lol sorry.

then divide \(240\) by \(5\)

i get 48

that would be 48

yea

so one answer is \[ 3(\cos (48°) + i \sin (48°))\]

next we add 360 to 240 and divide by 5 again

ok so it would be 120

\[360+240=600,600\div 5=120\] right

so 2nd answer is \[3(\cos (120°) + i \sin (120°))\]

lather, rinse, repeat

alright. so once again i add 360 and divide by 5?

\[600+360=960, 960\div 5=192\]

3(cos(192°)+isin(192°))

third answer is \[3(\cos (192°) + i \sin (192°))\] you are too fast for me

haha sorry

no that is good, you get the picture, even though evidently you will never use this again

i will let you finish the last two \[960+360\] etc

ok thanks so much for the help. thats everything i needed help with

you are welcome, hope you pass