im having problems on how to sketch 3D functions, like z=4-x-y, any tips or website that gives a summary and useful techniques to graph functions like this?
The Attempt at a Solution
Answers and Replies
-make either x or y = 0 and then find how the thing looks in z-y or z-x plane
-find what happens when x--> inf y=0 or y--> inf , x =0 or y-->inf x -->inf
-Draw contours (should have learned them before getting into 3d)
I agree with rootx. plotting the functions when x or y = 0 is a good tool.
I still don't quite understand contours :(
neither me ><
using k = 0,1,2.. works most times..
sometimes, using z-x and z-y plane
or, converting to rec/spherical co-ods