Texas Instruments TI-89 Voyage 200, User Manual

Page: 271 / 1008

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).