Question

Two hallways, of widths a and b, meet at right angles (Figure 2). What is the greatest possible length of a ladder that can be carried horizontally around the corner? Use x as the variable.

Answer 1

You know pathegorem theorem?

Answer 2

or how ever you say it..

Answer 3

Set it up like that...with a and b being "Known" and x being "unknown"

Answer 4

@lolrocker1 i dont get it, eveything is also unknown to me ): is there any other method other than pythagoras? can u show me the relationship between pythagoras and the diagram?

Answer 5

._. Hrmm...Silly question...but have you asked your teacher for help..im a freshman in highschool...im not the best person to teach you math...

Answer 6

haha okay! :p well, yeah she have thought bt i dont understand her method, she basically did pythagoras theorem too.

Answer 7

._. ask her how she does it? can she come to the computer...

Answer 8

...@satellite73 Save me satellite...id feel bad i made this girl fail D:

Answer 9

\[l \prime (x) = \sqrt{x ^{2}+a ^{2}} + \sqrt{b ^{2}+\frac{ b ^{2}a ^{2} }{ x }}\]

Answer 10

It makes sense...want me to explain it?

Answer 11

^ this is the starting equation, i dont understand how he came up with that.

Answer 12

yes please haha

Answer 13

Well...cant read the very first part...but the 2nd part is basicily a wall X a wall...

Answer 14

btw denominator on 2nd term must be x^2

Answer 15

._.
k...

Answer 16

wait...he knows your on here right?

Answer 17

no.. haha im at home now, its already midnight here, can't contact my prof. haha

Answer 18

@myininaya can you help :3

Answer 19

hang on..im trying to get someone who is better at math than me...

Answer 20

thanks! haha

Answer 21

You live in....? china? japan?._. i have no idea...im assumign thats far enough from me to be midnight...

Answer 22

@ganeshie8 HELP...we have been on this...half an hour...no one else will help...and i dont realy know this...

Answer 23

yes very far, in singapore. lol @lolrocker1 dont have to stress yourself xD

Answer 24

._. i dont like not knowing something...it bugs me D:

Answer 25

same here i can't go to sleep until i figure this out lol

Answer 26

Hey. So what part are we on?

Answer 27

._. rly myini...i was expecting you to come in here like you two are retarded...its 3...Duh...

Answer 28

@myininaya , deriving the equation for L.

Answer 29

http://assets.openstudy.com/updates/attachments/525ea580e4b0ede9e44af517-ememlove-1381934477907-fig2.png

Answer 30

emem...were really on other sides of the worlds here...its 11:26 AM here... like half an hour before noon...

Answer 31

yeah its 11.27 pm here haha

Answer 32

can i ask you a stereotype emem?

Answer 33

sure go ahead haha

Answer 34

what do we want the equation in terms of?

Answer 35

in that part of the world where you live...are dogs eaten as a delicacy?

Answer 36

we need to find L in terms of x. But if there's another easier method than pythagoras, also can.. because theres alpha(a) also i think we can use that. As long as we get the equation to differentiate and get the critical points. The problem is, the derivation of L(x).

Answer 37

haha, no singapore is a strict 1st world country. you will be jailed if you attempt animal abuse.

Answer 38

:D i know in Vietnam they do...like they are bred to be eaten...its...</3ing...

Answer 39

although shark fin soup is still available in the blackmarket, i'm not sure if still around though but it's chinese tradition.

Answer 40

i see.. heard of it also. haha, crazy. in japan they slaughter dolphins for food.

Answer 41

Right now I'm thinking we have to use Pythagorean thm. Why do you think there is any easier way? Did someone say that?

Answer 42

I knew that...also whales... Weirdest thing ive heard was that...i think...where was it... i think it was india? apparently Maggots are a delicacy there... *shudder

Answer 43

no, i was just guessing., coz i really dont get the connection between using pythagoras theroem. ): do u have any idea how to use pythagoras theorem in this qn?

Answer 44

@lolrocker1 haha xD in USA also have maggots. They have maggot-coated sugar sweets. I saw a picture from my friend when she was in US for internship.

Answer 45

That big long line is l