Hey math nerds

[futuresailors]

I've been trying to help my girlfriend with her math homework, but haven't done more than arithmatic in 5 years...
Anyways, her book is a piece of shit, soooo...
Finding dx/dt
let's say we have y^3=16x^2
x=4 and dy/dt=2

I'm sure there's some simple process, but all I could figure is that you need to chain rule that shit...
Halp?

[mysteriousj]

ughh it's been 2 years for me since i did this but i'll try..
so ...


y=(16x^2)^(1/3)
dy/dx=(1/3)*{(16x^2)^(-2/3)}*32x
so if dy/dx=(dy/dt)*(dt/dx)..
then dt/dx= (dy/dx)/(dy/dt)
so dx/dt = (dy/dt)/ (dy/dx)
Then plug in those numbers and stuff and solve I think??

[MEC]

http://www.wolframalpha.com/

It takes a minute to figure out how to navigate but once you do.

[mysteriousj]

http://www.wolframalpha.com/

It takes a minute to figure out how to navigate but once you do.

This. I'm probabaly wrong hahaha

[tuffteef]

good god is she legal? if she has math homework

[Ironbird13]

good god is she legal? if she has math homework

i was chatting to this 13 yr old girl online, she seemed really cool, then she told me she was a detective. i thought, what a cool job for someone so young.....












*not a true story*

[tuffteef]

good god is she legal? if she has math homework

i was chatting to this 13 yr old girl online, she seemed really cool, then she told me she was a detective. i thought, what a cool job for someone so young.....












*not a true story*

i would not be surprised if it was a undercover cop
i mean he is under investigation for being the nyc beach murderer

[futuresailors]

ughh it's been 2 years for me since i did this but i'll try..
so ...


y=(16x^2)^(1/3)
dy/dx=(1/3)*{(16x^2)^(-2/3)}*32x
so if dy/dx=(dy/dt)*(dt/dx)..
then dt/dx= (dy/dx)/(dy/dt)
so dx/dt = (dy/dt)/ (dy/dx)
Then plug in those numbers and stuff and solve I think??

That was the one!

good god is she legal? if she has math homework

i was chatting to this 13 yr old girl online, she seemed really cool, then she told me she was a detective. i thought, what a cool job for someone so young.....












*not a true story*

i would not be surprised if it was a undercover cop
i mean he is under investigation for being the nyc beach murderer

Define legal...
And I have two solid alibis that explain the sand in my shoes!