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Homework Statement
a) Suppose ##g## is a function such that the expression for ##g (x,y,z)## involves only ##x## and ##y## (i.e., ##g (x,y,z)=h (x,y)##). What can you say about the level surfaces of ##g##?
b) Suppose ##g## is a function such that the expression for ##g (x,y,z)## involves only ##x## and ##z##. What can you say about the level surfaces of ##g##?
c) Suppose ##g## is a function such that the expression for ##g (x,y,z)## involves only ##x##. What can you say about the level surfaces of ##g##?
Homework Equations
The Attempt at a Solution
For (a), I answered that the level surfaces of ##g## are the function ##h(x,y)## in the ##xy## plane.
For (b), I answered that the the level surfaces of ##g## are the function ##h(x,z)## in the ##xz## plane.
For (c), I'm most unsure, sine the function only involves one variable. I answered that the level surfaces of ##g## are the function ##h(x)## in both the ##xy## and ##xz## plane. Those two level surfaces are not the same curve or line.
Am I right? My textbook doesn't have the answers to these questions, that's why I'm checking it here.
Thanks.