Zachary Nielsen

01:16:41

wait

Zachary Nielsen

01:16:58

when did this start?

Melissa Mangelson

01:17:11

like 1 min ago!

Neil Loosli

01:17:12

Like 2 minutes ago

Zachary Nielsen

01:17:33

Lol its not even 5 yet

Ignacio R. de Almeida

01:23:19

Is this recording going to be in math.byu.edu? If so, when do you guys think it will be posted? Thanks!

Lauren King

01:23:44

where r these reviews from?

Alex Cherry

01:23:54

^

Jonas Nielsen

01:23:55

^

Ella Hayes

01:24:12

I think theyre on the math lab website under practice tests

Emma Anderson

01:26:26

I thought that as x approaches infinity is not on this exam yet?

McKenna

01:26:34

same

Aileen Arriagada

01:26:36

same

Tyler Driggs

01:26:42

I don't think it is

Brayden

01:26:58

I don't believe it is as we are going over it on Wednesday

Zoë Bell

01:27:04

What was the answer for number 9 that she just did?

Nathaniel Judd

01:27:11

-1/5

Emma Anderson

01:27:11

Awesome thanks

Sean Baird

01:27:12

-2/3

Nathaniel Judd

01:27:16

oops

Sean Baird

01:27:17

for 9

Nathaniel Judd

01:27:19

I thought you meant this one

Nathaniel Judd

01:27:20

sorry

Ignacio R. de Almeida

01:27:21

This exams reviews have topics that we haven’t taken since there used to be 3 mid term and now are 4 (or something like that)

Ignacio R. de Almeida

01:27:31

These*

Zoë Bell

01:27:50

All good thank youuu

Lucy Murff

01:29:31

Is there a pdf link to this document?

Sam Baesler

01:30:00

Heres one link:

Sam Baesler

01:30:01

https://math.byu.edu/wp-content/uploads/2017/03/M112F16E1-sample-1.pdf

Maren C

01:30:56

Thanks Sam !

Ignacio R. de Almeida

01:31:18

Jenney Kim

01:31:26

math.byu.edu

Spencer Bartholomew

01:31:29

math.byu.edu

Daira Velasco

01:31:29

https://math.byu.edu/?page_id=193

Dallin Bowie

01:31:30

https://math.byu.edu/?page_id=193

Nathaniel Judd

01:31:30

Just type math.byu.edu

Jenney Kim

01:31:36

then go to undergraduate tab

Nathaniel Judd

01:31:36

it's there in the top of her screen

Alex Cherry

01:31:37

There was also a link on the email sent out

Jenney Kim

01:31:39

scroll to the bottom

Sydney Cluff

01:32:03

Robbie put all the links in an announcement for the course

eric

01:35:02

when does the test open and close again?

Rex

01:35:21

Closes Thursday

Alexander Amrine

01:35:21

Tuesday at 1 AM and Thursday at 11:59PM

Josh Hanosek

01:35:26

opens tomorrow and closes thursday

Josh Hanosek

01:38:59

we have not learned this yet

Briana King

01:39:13

#3

Lilian Tsubaki

01:39:39

could you solve: tan(arcsin(4/5))

Blake Rozsa

01:39:51

you would use a triangle

Blake Rozsa

01:40:08

Then you find the 3rd side and take the tangent of the arcsin triangle

Alexander Amrine

01:40:11

Anyone have good ideas to memorize trig identities?

Grace Worthington

01:41:21

limCan you help solve the lim as x approaches zero from the right of 5arctan(ln(x))

Zachary Nielsen

01:41:41

^

Josh Hanosek

01:41:48

^^

Alexander Amrine

01:43:23

Does anyone know which trig identities we will have to know? Robbie said it wouldn’t be all of them

Victoria Lopez

01:43:25

Going over simplifying sin(2arccos(x)) would be fantastic!

Jonas Nielsen

01:44:05

sin(x+y)

Brierton Sharp

01:44:07

Can you do number 7 on the webassign 9?

Jaden Lay

01:44:35

what about the double angle identities?

Alexander Amrine

01:44:48

^

Troy Hess

01:44:58

^

Lucy Murff

01:45:06

^^

Luke Rainey

01:45:14

https://www.youtube.com/watch?v=I4mcja8abDc

Ryan Jensen

01:45:29

no its 2sinxcosx

Ryan Jensen

01:45:34

oh true

Blake Rozsa

01:45:35

Thanks for the video @Luke

Luke Rainey

01:45:52

Three videos on how to remember/derive the trig identities you’ll need to know

Blake Rozsa

01:47:05

Better safe than sorry?

Summer Scherer

01:47:39

20 multiple choice

Divya Nikitha Kusuluri

01:48:07

Can you go over the question 1? Only how to find the domain?

Divya Nikitha Kusuluri

01:48:28

in webassign

Sam Baesler

01:49:51

Which web assign was that on?

Divya Nikitha Kusuluri

01:49:54

I mean only range

Nathaniel Judd

01:50:00

yeah I never saw that one

Divya Nikitha Kusuluri

01:50:02

Review question papaer

Javin Gudmundsen

01:50:02

Same, I don’t remember that one

Blake Rozsa

01:50:10

^

Divya Nikitha Kusuluri

01:50:26

WA 9 - Review for Exam 1

Nathaniel Judd

01:50:41

I just finished that one and I never saw that

Divya Nikitha Kusuluri

01:50:48

Question 1, I just need to know how to know the range

Ian Little

01:50:51

qait there is review on web assign?

Ryan Jensen

01:50:51

maybe coach dorff's assignment is different

Divya Nikitha Kusuluri

01:50:59

oh gotcha!

Nathaniel Judd

01:51:01

Probably

Spencer Searcy

01:52:24

pray

Alexander Amrine

01:52:30

^

Jaden Lay

01:52:31

there is a review on webassign for snellman but I don't know if there is one for dorff

Blake Rozsa

01:52:31

^^

Tyler Christensen

01:52:35

personal revelation

Bitner Hayes

01:52:35

lol

Grace Worthington

01:52:36

This problem was from web assign #10 question #7

Divya Nikitha Kusuluri

01:53:15

ok thank you!

Daira Velasco

01:53:28

can we do number 3 of this one please

Alli Cowan

01:53:44

webassign 10 doesn't apply to this exam

Brayden

01:53:51

isn't Web assign #10 and its concepts not on the exam?

Alexandra Mantilla Arrayan

01:53:52

^^

Daira Velasco

01:54:00

nop

Zachary Nielsen

01:54:01

That is correct

Zachary Nielsen

01:54:26

everything up to and including 2.5b is on the exam

Tyler Christensen

01:54:49

was my mic on? I thought I had it off but got a message that someone muted me

Alyssa Tobler

01:54:59

so will this question not be on the test?

Sam Baesler

01:55:07

@Alyssa no

Alyssa Tobler

01:55:21

ok thank you.

Daira Velasco

01:55:28

can you do number 3 please

Jaden Lay

01:55:37

simp for Robbie join the discord for snellman's class https://discord.gg/4V4Ur7

Zachary Nielsen

01:55:43

^^^

Ian Little

01:55:58

so memorize everything

Brierton Sharp

01:56:01

Number 7 on wegassign pls

Darwin Buhler

01:56:02

is this what the actual exam will look like?

Penelope Bowden

01:56:06

Which practice exam are you guys looking at?

Lucy Murff

01:56:14

yes

Lucy Murff

01:56:21

oh

Lucy Murff

01:56:23

nvm

Darwin Buhler

01:56:34

Where do we find this practice exam at?

Ryan Jensen

01:56:43

math.byu.edu

Lucy Murff

01:56:43

https://math.byu.edu/wp-content/uploads/2017/08/Math-112-Fall-2016-Exam-1-sample-1-KEY-1.pdf this one Penelope

Penelope Bowden

01:56:59

Thank youo

Kirsten Hall

01:57:40

would you be able to do webassign #4 the equation is 6cos(x) + 3sin(2x) =0

Alex Cherry

01:58:28

Kirsten what do you solve for in that one

Alex Cherry

01:58:34

Just solutions?

Rex

02:01:07

Where did the 2 come from?

Clara

02:01:31

it was a hypothetical question for if there was a 2 in front of tangent

Morgan Kurth

02:01:50

for the ones on the upper right of the page she is just practicing exponents as a separate problem

Emma Anderson

02:02:35

Could you do 1 from the spring 2017 exam?

Emma Anderson

02:04:56

The domain of (e^(x−2) ln(6 − x))/√(3x-12)

Victoria Lopez

02:05:03

Just double checking, we don't need to be able to calculate limits that approach infinity because we're learning that later?

Blake Rozsa

02:05:12

@Kirsten, there is a trig ID sin2x=2sinxcosx so you do that, factor out the 6cosx and solve for x for each quantity

Jaden Lay

02:05:13

yep

Jaden Lay

02:05:20

that's wednesday

Luke Rainey

02:06:58

(8x^7⁄2 y^5)/(x^6 y^−3⁄2)all to the −2 power

Darwin Buhler

02:07:19

when will the recording be released?

Briana King

02:08:12

could you do #11 on this test?

Lucy Murff

02:09:17

Will we see #6 on the test?

Jacob Ordaz

02:09:56

So far the domain we have to solve the top to?

Lucy Murff

02:10:00

yes

Jacob Ordaz

02:10:23

aight thanks

Lucy Murff

02:10:29

On the fall test

Jared Escobar

02:10:38

Can you do #6 on webassign 10

Harrison

02:11:59

Can we do #18 on this test, while we're on the topic of IVT

Nick York

02:12:06

^^^

Nathan Holmstead

02:12:15

Could you do number 15 on this test?

Clara

02:15:29

what would the domain be of (3x+2)/ sqrt x^2-7x)

Jonathan Mower

02:16:39

good question, *pats you on the back*

Brandon Southwick

02:16:55

(7, infinity) I think @Clara

Clara

02:17:39

they said the answer was (-infin, 0] U [7, infin)

Clara

02:17:41

isn't that weird?

Brandon Southwick

02:18:29

Oh that’s true, but I don’t think 7 or 0 should be included

Lucy Murff

02:19:08

Can we do #8 on the fall 2016 test?

Clara

02:19:32

how is (-infin, 0) included?

Brandon Southwick

02:20:44

Any negative number you plug in will give you a positive number in the denominator, so it is within the domain

Lucy Murff

02:20:49

Wait wouldn’t you do values smaller than three since you’re approaching it from the left?

Leah Leavitt

02:21:15

aye

Jonathan Mower

02:22:18

shut him down Rebecca!

Katriina Jarvis

02:22:34

Whoa play nice guys

Nathaniel Judd

02:22:53

Haha

Beau Wright

02:23:09

You have to know what the graph of 1/x looks like

Clara

02:23:13

@Brandon, how would you solve it? bc when I solve it I get only positive but plugging in negative numbers makes sense

Nathaniel Judd

02:23:21

we only care about the signs in this problem

Lucy Murff

02:23:33

So this would be DNE? Because the limits aren’t the same?

Yong Nan Chang

02:23:36

Could you go over really quick for which questions will not be on the test so I can skip those

Nathaniel Judd

02:23:39

yeah

Lucy Murff

02:23:48

For the limit as it approaches 3

Beau Wright

02:23:59

Never mind you're right

Leah Leavitt

02:24:00

*approaches from the left

Alex Cherry

02:24:02

Exactly. Plug in 2.9, and you get a negative number. Because you know the graph is inf, -inf, or DNE, because you get a negative with a number slightly less than 3 it is -inf

Nathaniel Judd

02:24:47

no vertical asymptotes

Nathaniel Judd

02:24:52

*horizontal

Harrison

02:26:31

Where is the webassing review?

Sam Baesler

02:27:28

@Harrison, I think they’re just talking abut WA9

Harrison

02:27:38

thnks

Katriina Jarvis

02:27:50

I think the reason that works is because if you multiply x -1/3 then you don’t get the top of the equation

Elijah Pierce

02:29:14

Can we do 13?

Zoe’s iPhone

02:30:13

can we go over population growth regarding doubling every x years

Nathaniel Judd

02:30:37

^

Nathaniel Judd

02:30:40

yeah I agree

Lucy Murff

02:30:44

Can we do #9 on fall 2016?

Kaden Monahan

02:31:11

Aren't we not doing horizontal asymptotes?

Jenney Kim

02:31:28

she’s going over the vertical asymptote part

Nathaniel Judd

02:31:32

no we aren't

Gabe Willes

02:31:44

no we aren’t doing horizontal

Lucy Murff

02:33:00

JK I figured it out on #9

Nathaniel Judd

02:33:08

After this, can we please go over population growth problems

Zachary Nielsen

02:33:16

^^^^^^^^

Ben Cochran

02:33:33

^^^^^

Lucy Murff

02:34:22

So we’re not doing limits x—> infinity on the test?

Lauren King

02:35:19

can we go over number 12?

Alex Cherry

02:37:59

@Lucy I think we would be able to, but it’s not likely considering the types of problems that have been done in class

Ryan Jensen

02:39:02

yo the paper homework is in the review section of the chapter right? I can't find the page numbers

Katriina Jarvis

02:39:34

@Ryan , literally thought you were a TA this whole time lol

Ryan Jensen

02:39:41

no freaking way lol

Alexandra Mantilla Arrayan

02:39:51

can you do question 55 from the last paper homework. It's about the inter. val. theorem

Lauren King

02:40:00

could we go over 13 as well?

Simon Tanner

02:41:14

could we do an intantanious velocity problem?

Lizeth Mendoza

02:41:38

^^^

Nathaniel Judd

02:41:44

so the webassign problems are randomly generated it seems, but the concept is going to help us all solve it despite the differences on each of our problems

Ryan Jensen

02:42:01

@simon that won't be on our test that has to do with differentiability

Simon Tanner

02:42:18

thanks

Spencer Searcy

02:44:37

why did you use e?

Leah Leavitt

02:44:49

it's just a formula for population

Nick York

02:44:57

yeah I don't know if u use e for this do you?

Spencer Searcy

02:45:09

ok

Alex Cherry

02:45:26

You do, because it is used for half-life and population growth equations

chloe

02:45:54

Can you go over how to find if it’s continuous or discontinuous when given a piecewise function?

Dallin Davis

02:47:41

Are calculators allowed?

Zachary Nielsen

02:47:47

no

Reese "Da Piece" Olsen

02:47:51

because its not starting at 0 yes

Reese "Da Piece" Olsen

02:47:56

starting at 24

Katriina Jarvis

02:48:07

No calculators on any calculus tests as far as I know

Brierton Sharp

02:48:13

When does the test close again?

Zachary Nielsen

02:48:21

Thursday at 1159

Leah Leavitt

02:48:23

but they can't really stop you

Zachary Nielsen

02:48:24

pm

Katriina Jarvis

02:48:30

Jesus is watching

Brierton Sharp

02:48:30

Thank you

Zachary Nielsen

02:48:41

^^

Penelope Bowden

02:48:52

Couldn't you use the equation 95*2^(t/8)

Zachary Nielsen

02:48:59

Or big brother is working

Nick York

02:49:01

yeah

Zachary Nielsen

02:49:02

watching

Leah Leavitt

02:49:13

that book was terrible lol

Maija Pearson

02:49:15

always watching wasowski

Reese "Da Piece" Olsen

02:49:52

95*2^t/8

Lauren King

02:50:07

I saw somewhere that 1/2 = e^-x ….. so 2 = e^x can someone explain?

Nathaniel Judd

02:50:14

wow, your mic is really loud

Zachary Nielsen

02:50:21

^^^

Reese "Da Piece" Olsen

02:50:32

not that

Brayden

02:51:04

but we no have calculator

Leah Leavitt

02:51:44

yeah bring the fing calculators

Leah Leavitt

02:51:48

let's goooo

Benjamin Taylor

02:52:01

can you go over 4 on the web assign

Nathaniel Judd

02:57:35

it just tells you the signs

Nathaniel Judd

02:57:40

that's all the interval means here

chloe

03:00:54

Can you go over how to find if it’s continuous or discontinuous when given a piecewise function?

Nathaniel Judd

03:03:52

just read it out to her

Nathaniel Judd

03:03:58

so she doesn't have to find it

Leah Leavitt

03:06:50

can I just say Rebecca you are an absolute g for doing this for us

Nathaniel Judd

03:07:02

Yeah she really knows her stuff too

Brayden

03:07:02

^

Tanner Esplin

03:07:06

That's facts

Divya Nikitha Kusuluri

03:07:33

does that mean number 10 is not part of test?

Nathaniel Judd

03:07:47

if it as things we haven't learned yet, then yeah

Nathaniel Judd

03:07:49

*has

Divya Nikitha Kusuluri

03:08:12

ok

Divya Nikitha Kusuluri

03:08:39

ok thank you

Katriina Jarvis

03:09:02

Rebecca, is there a recording being posted soon?

Tom Montoya

03:09:03

Thanks for this!

Katriina Jarvis

03:09:17

Where do they post it?

Katriina Jarvis

03:10:16

All multiple choice I think

Nathan Schafer

03:10:21

can you do #7 on webassign 10

Benjamin Taylor

03:10:25

its all multiple choice

Isaac Snider

03:10:53

Is there a time limit?

Benjamin Taylor

03:10:59

4 hours

Isaac Snider

03:11:08

thank you

Leah Leavitt

03:11:18

siiiick

Sydney Cluff

03:13:44

Would that be in brackets or parenthesis

chloe

03:14:59

Can you go over how to find if it’s continuous or discontinuous when given a piecewise function?

Lauren King

03:15:27

can we go over 19?

Leah Leavitt

03:19:50

GOD BLESS YOU REBECCA

Nathaniel Judd

03:19:54

^

McKenna

03:20:08

Thank you so much!!!!

Jacob Ordaz

03:20:14

Thanks!

Benjamin Taylor

03:20:28

You rock Rebecca!

chloe

03:20:31

Thank you so so much!!!!

Penelope Bowden

03:20:37

Thank you so much!

Katriina Jarvis

03:20:42

Thank you, Rebecca!