Effect Of Changing Eye Phi; Effect Of Changing Eye Psi - Texas Instruments TITANIUM TI-89 User Manual

Effect of Changing Effect of Changing eye Effect of Changing eye Effect of Changing eye
By changing f, you can elevate your viewing angle above the xy plane. If
eye
, the viewing angle is below the xy plane.
270
3 3
z1(x,y) = (x y – y
This example starts on the xy plane (
Note:
elevate the viewing angle.
Effect of Changing eye

Effect of Changing eye psi

Effect of Changing eye Effect of Changing eye
The view on the Graph screen is always oriented along the viewing angles set by
and f. You can change
eye
3D Graphing
eyef phi phi phi phi
x) / 390
eye
eye
eye
psi psi psi
to rotate the graph around that line of sight.
eye
In this example eye
20
= 90
f
f = 70
f = 50
) and decrements
eye f = 90
90 < eye
q =
f by 20 to
eye
<
f
eye
q
389