HP 40gs User Manual page 294

hp40g+.book Page 20 Friday, December 9, 2005 1:03 AM
16-20
The example at the right
shows the case for t = 0.
Select the entire expression
and press to get the
answer:
0
The example at the right
shows the case for t = π/3.
Selecting the entire
expression and pressing
displays the
message shown at the right.
Accept YES and press
Press again to get
the result:
∞
The next example is for t =
2π/3. Selecting the entire
expression and pressing
displays the result:
0
The final example is for the
case where t = π. Press
, accept YES to the
message UNSIGNED INF.
SOLVE?, press and
press to get the
result:
∞
Here, then, are the variations of
.
x t ( ) y t ( )
and :
Step-by-Step Examples