Texas Instruments Titanium TI-89, Руководство пользователя, Страница: 379 / 977

3D Graphing 376
Note:
During rotation, the axes expand or contract to fit the screen’s width and height.
This causes some distortion as shown in the example.
z1(x,y)=(x
3
y–y
3
x) / 390
In this example,
eye q =20 and eye f =70
eye
ψ
= 0
eye
ψ
= 45
eye
ψ
= 90
When
eye
ψ
=0
, the z axis runs the height of
the screen.
When
eye
ψ
=90
, the z axis runs the width of
the screen.
z=10
z=
ë
10
z=10
z= ë 10