So the function I'm working with is:(adsbygoogle = window.adsbygoogle || []).push({});

f(x,y) = 1/sqrt(1-x^2-4y^2)

First, they want me to find the Domain and Range, which I found to be:

D: x^2 + 4y^2 < 1

R: (0,1]

Then they want me to sketch level curves and cross sections, then sketch f(x,y)

I'm having trouble with the sketching, I understand the concept of level curves, but when I make f(x,y) = k I'm not quite sure where to go from here... Does anyone have any graphing tips that I could use? Thanks!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Trouble Graphing Multivariable Functions!

**Physics Forums | Science Articles, Homework Help, Discussion**