Homework Statement
given z =y3 revolved around the y-axis what is the equation of the surface and then graph.
Homework Equations
The Attempt at a Solution
I have no idea how to approach this, i tried searching around the net but nothing came out. pls help.
So as for the first question the graph would be a sphere that is shaded inside? and then the outline of the sphere would be dotted to indicate that it wouldn't reach the radius of 5.
As for the 2nd one ...
the equation was 2x^2y/(x^4+y^2)
1.)
Homework Statement
Sketch the domain of f(x,y,z) = ln(25-x^2-y^2-z^2) and determine it's range.
Homework Equations
N/a
The Attempt at a Solution
Im sure the domain is x^2+y^2+z^2 < 25 or (-infinity, 25)
Then the range is (0,+infinity.)
my problem is how would i sketch it.. i was...