#calc 1 discontinuity help

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fading blade
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i got discontinuity at x=-1, x=0, x=1
removeable at x=1, jump at x=-1, is it infinite at x=0?
and my reasoning behind x=1 was that a limit from the left and right as x-> 1 exists and a limit exists but since there is a hole at (1,1) f(1) does not exist therefore it is a removeable discontinuity
reasoning behind x=1 was that limit from the left and right were not equal and a limit does not exist when x-> -1
which produces jump discontinuity
idk how 2 prove infinite discontinuity tho or if that even is an infinite discontiunity or if its a jump
cuz its not like all the infinite discontinuities i've seen where the limit from left and right is infinitely approaching 0
from the left it's infinitely approaching 0 but from the right it's going towards a hole at like roughly (0,3)
so if anyone could double check my reasoning and answers for x=1 and x=-1 as well as explain to me x=0 i'd appreciate it 🫡

wind pelicanBOT
knotty idol
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Yeah X=1 and -1 look good

fading blade
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ok cool n then x=0

knotty idol
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And for an infinite discontinuity if the limit doesn’t exist for either side

fading blade
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limit exists for left side at x=0

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because infinitely approaching 0

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right?

knotty idol
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Nah from the left as X approaches 0

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Y approaches infinity

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So the limit doesn’t exist

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So it’s an infinite discontinuity

fading blade
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because there's no limit from the left side

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and none from the right side because of the hole?

knotty idol
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Yeah for the first one

knotty idol
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Limits is like saying what does it get close to

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So since from the right it gets close to 3

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The limit from the right is three

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But from the left since it goes to infinity it doesn’t get close to anything so there is no limit

fading blade
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so it would be the top one

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these were the notes i took for each discontinuity

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i didnt get any for infinite and i dont really get what i wrote for removeable

knotty idol
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Like the names are kind of intuitive

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Removable is like you grab the point and put it somewhere else

fading blade
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is there like a clear set of conditions somewhere for each discontinuity using the formal definition if discontinutiy 😔

knotty idol
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Hence you “remove” it

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A jump is well where you jump XD

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And infinite is where one of the limits is infinity

fading blade
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ok so for x=0 its an infinite discontinutiy because when takign the limit from the left we're given infinity which means it is an infinite discontinuity

knotty idol
fading blade
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thank you

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🙏

knotty idol
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This is pretty good honestly with some examples

fading blade
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so whenever i get limit = plus or minus infinity/DNE then its infinite discontinutiy

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removeable happens when i get uh

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a limit exists but L does NOT equal f(x)

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and jump happens when the limit from left and right differ therefore lim f(x) doesnt exist

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that sound right?

knotty idol
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Yeah that sounds awesome

fading blade
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sweet ty

knotty idol
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You’re welcome mate have a good one

fading blade
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u2

stiff granite
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