petrol.veem
New member
- Joined
- Oct 2, 2007
- Messages
- 29
Why should the graphs of f(x,y) = x^2 + y^2 and g(x,y) = -x^2 - y^2 + x(y^3) be called tangent at (0, 0)?
I am having problems understand this question. I know how to find tangent planes, partial derivatives, etc, but i can't seem to be able to apply any of it to this question to show why they should be called tangent at the origin.
any ideas or explainations?
I am having problems understand this question. I know how to find tangent planes, partial derivatives, etc, but i can't seem to be able to apply any of it to this question to show why they should be called tangent at the origin.
any ideas or explainations?