Recent content by kazthehack

^ what i need is a step by step solution and i learn to solve other problems if i see how it is done.

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.

Can you clarify this?

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...