Texas Instruments Titanium TI-89, Руководство пользователя

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Symbolic Manipulation 260
• Create an equivalent single-statement user-defined function.
If You Get an Out-of-Memory Error
The TI-89 Titanium stores intermediate results in memory and then deletes them when
the calculation is complete. Depending on the complexity of the calculation, the
handheld may run out of memory before a result can be calculated.
Freeing Up Memory
• Delete unneeded variables and/or Flash applications, particularly large-sized ones.
- Use
2 °
as described in Memory and Variable Management to view
and delete variables and/or Flash applications.
• On the Home screen:
Use the TI-89 Titanium’s built-in
when
function.
Then integrate
y1(x)
with respect to x .
Note:
To select
‰
from the Calc toolbar
menu, press
…
2 (or press
2 <
on the
keyboard).
Define
y1(x)=when(x<0,
L x, 5cos(x))
Press
8 ¸
for a floating-point
result.