Question

Which formula based on partial derivatives provides the slope of the level curve z = f(x,y) ?

Answer 1

I know the answer... But I don't know why.

Answer 2

What is the answer? Maybe it'll refresh my memory ^^ heh

Answer 3

I cant get the del sign in latex :/

Answer 4

its ummm nambla i think.. \nambla

Answer 5

i thought it was \del

Answer 6

nabla*

Answer 7

i'll try :)

Answer 8

nope thats an upside down triangle

Answer 9

Yah that's the... del operator :o
do you want the one with the vector arrow above it..? :o

Answer 10

\frac{ dy }{ dx } = -\frac{\del f /\del x}{\del f/\del y}

Answer 11

i mean like the one used on http://en.wikipedia.org/wiki/Partial_derivative

Answer 12

\[\partial \]

Answer 13

ahhh \partial

Answer 14

\[\Huge\frac{ dy }{ dx } = -\frac{\partial f /\partial x}{\partial f/\partial y}\]

Answer 15

\[\huge \vec \nabla f(x,y)=\left<\frac{\partial f}{\partial x}, \frac{\partial f}{\partial y}\right>\]

Answer 16

Oh sorry i didn't notice u already found it, hehe

Answer 17

oo, yours is fancy, i dont know what the nabla is though, thats okay...

Answer 18

Yah i been trying to figure out latex the last couple of weeks :) it's kinda interesting

Answer 19

very interesting.. i'm pressured to use it for one of my math classes, i try to avoid it.. :)

Answer 20

anyways, do you get the question?

Answer 21

the nabla thing is the "gradient" of f, it's the direction of greatest increase from a surface. It ummmmmm... i would try to draw a picture but i'm not sure i have the greatest understanding of it myself... :\ hmm

Answer 22

haha, thats okay.. i'll learn that when i get to that.