Texas Instruments TITANIUM TI-89 User Manual
Page 271
Symbolic Manipulation
271
•
Use
9 to create a user-defined secant function, where:
•
Use
Define
to create a user-defined function
h(x)
, where:
Multi-Statement vs. Single-Statement Functions
Multi-Statement vs. Single-Statement Functions
Multi-Statement vs. Single-Statement Functions
Multi-Statement vs. Single-Statement Functions
Multi-statement user-defined functions should be used as an argument for numeric
functions (such as
nDeriv
and
nInt
) only.
Then find the limit of
sec(x)
as x
approaches p/4.
Note:
To select
limit
from the Calc toolbar
menu, press
… 3.
Then find a 5th order Taylor polynomial
for
h(x)
with respect to x.
Note:
To select ‰ from the Calc toolbar
menu, press
… 2 (or press 2 < on the
keyboard). To select taylor, press
… 9.
x
sec
1
x
cos
-----------
=
h x
( )
t
sin
t
---------
0
x
∫
=
Define h(x)=
‰
(sin(t)/t,t,0,x).