#Help on Calculus, limits questions.

81 messages · Page 1 of 1 (latest)

tough vault
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I dont know why I got questions 1 and 3 wrong. If someone could help explain how they are wrong that would be helpful, I also have the answer key but it doesnt give me the reasoning on how the problems are correct.

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dry moon
tough vault
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e also makes sense right?

dry moon
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RHS of x=3 DNE

tough vault
dry moon
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the function ends at x=3

tough vault
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oh ok

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so it cant approach anything from the right hand side

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alr

tough vault
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i dunno bro

dry moon
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look at x=-1 on q3

tough vault
# dry moon look at x=-1 on q3

ok yeah theres a point at y=2 and y=1 , so is B on q1 wrong because the limit as x approaches c doesnt necessarily have to equal L? and I think A could be wrong because in the limit it doesnt say that f(x) is defined at c or else the limit would be lim x->C f(x) = f(c) right? if that isnt it I think it could just be wrong because f(x) would be defined at L for sure because C might be a hole or something. idk why C isnt wrong tho

dry moon
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-1 is again a case against C

tough vault
dry moon
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yea

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and the limit still exists

tough vault
dry moon
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it could be a hole

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look at x=2 on q3

tough vault
# dry moon it could be a hole

the limit would still exist but f(x) would not be defined which like breaks the first step in proving that something is continous right?

dry moon
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but theres the case right after thats like
if its not continuous but the LH and RH limits are equal the limit is that

tough vault
dry moon
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mhm

tough vault
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alr

tough vault
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lemme send em thru

dry moon
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15 you have to lhopital it i think

tough vault
dry moon
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nvm you dont

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uhhh

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b is right ... ?

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what

tough vault
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I didnt know it I just guessed

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but I had a basic idea on how to do it

dry moon
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what the heck is the symbol in 16

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is that the floor of x

tough vault
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ive literally never fucking seen my teacher talk bout it bru

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so i just had no clue

tough vault
dry moon
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do the normal bounding thing

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where you ignore the constants

tough vault
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not gonna hold u man but idk what the normal bounding thing is because on god she only talked about it like once

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and never spoke about it again

dry moon
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its like

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just pay attentnion to the highst degree of each numerator and denom

tough vault
dry moon
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because as x gets really large

tough vault
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oh for 15

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yeah

dry moon
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the other values dont really mean much

tough vault
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I knew that sqrt5x^2 u wanted to make it similar to so you can cancel out the x

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x's

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oh

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bro

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i lowk get that one now

dry moon
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9 is like
a/0 is a form you should know

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what is it

tough vault
dry moon
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nope

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its not indeterminate

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you get the answer instantly from that

tough vault
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I thought u had to multiply by the conjugate but like cant you just plug in 0 and figure out it doesnt exist

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u only like simplify and shit when its 0/0

tough vault
dry moon
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a/0 is asymptote form

tough vault
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alr

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ill remember that ty

dry moon
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there is a trap where

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if the left and right are equal

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this usually happens if the demon is squared

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then the limit exists

tough vault
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oh alr