3D Graphing 398
format as it does if you use:
8Í
Note: These examples use the same x, y, and z Window variable values as a ZoomStd
viewing cube. If you use ZoomStd, press Z to look down the z axis. Do not confuse the
contours with the grid lines. The contours are darker.
Style z1(x,y)=(x3y–y3x) / 390 z1(x,y)=x2+.5y2–5
Looking down z axis
CONTOUR
LEVELS
Using eyeq=20, eyef=70, eyeψ=0
CONTOUR
LEVELS
WIRE AND
CONTOUR