help

[uncut forge]

please help

i understand that the x^2+2xy+4y^2=9 is the constraint
i just dont understand the theory on what the f(x,y) is

[karmic ravine]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with:

+close

3. Feel free to nominate the person for helper of the week in #helper-nominations
4. Do not ping the mods, unless someone is breaking the rules.
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[uncut forge]

@kindred seal are you of any help bro?

[kindred seal]

lemme read the question

[iron saffron]

I’m not sure but you want to find the minimum of the function with respect to y right? So derive each side with respect to y and look when it equates to 0, im not sure though I didn’t really do multi variable calculus yet

[uncut forge]

nah thats not what its asking

[kindred seal]

okay

[iron saffron]

Ok ok sorry

[uncut forge]

no its okay its very hard question

[kindred seal]

its a new thing

we havent heard of

ik someone who can help

@exotic void

@exotic void

@exotic void

[exotic void]

Coffe

This is ur end

[uncut forge]

da puppy please help

@kindred seal 😭

[kindred seal]

@hexed obsidian help him please

his pain is inbearble by me

[hexed obsidian]

What happened

Bro Lagrange multiplers are such ass

[exotic void]

What do u even need help with

[hexed obsidian]

Wait lemme read the question

[exotic void]

This looks very easy

Did u calculate the gradient yet?

[uncut forge]

i dont know what

f(x,y) is

[exotic void]

f(x,y) = y

[uncut forge]

wut

[exotic void]

U want to minimize the y value

[hexed obsidian]

Yup this is exactly what I was typing out

Do this

[exotic void]

Therefore f(x,y) = y

U don’t care what the x value is

[uncut forge]

idk why but for some reason i was trying to find the middle of the elipse

[exotic void]

[hexed obsidian]

And to find riggmost point use f(x,y)=x

[exotic void]

lol

Well anyway

[uncut forge]

idk why i missed that

[hexed obsidian]

Right*

[uncut forge]

give me 10 mins ill do it now

[exotic void]

Ping Boris when u need more help

[hexed obsidian]

No worries now u solved the problem ☺️

[hexed obsidian]

Oi what

Pls do the algebra correct I don't wanna proofread

[exotic void]

~~ u have time since u spoiler urself the riddle ~~

Btw as a check for u

It’s trivial to see that y =- sqrt 3 is the min value

[hexed obsidian]

Hey I'm happy i spoiled it are you mad I'm not that good at competition math

What happened to your 2 points on sphere brownian motion btw that sounded like a fun topic to delve deeper into

[uncut forge]

@hexed obsidian @exotic void 🎉

[hexed obsidian]

Wooohoo very nice

[uncut forge]

thanks guys

+close