Calculator User Manual
Symbolic Manipulation  269
Finding a Taylor Polynomial
Finding a Taylor PolynomialFinding a Taylor Polynomial
Finding a Taylor Polynomial
Use the 
taylor (… 9) function.
Important: Degree-mode scaling by p/180 may cause calculus application results to 
appear in a different form.
User-Defined Functions and Symbolic Manipulation
User-Defined Functions and Symbolic ManipulationUser-Defined Functions and Symbolic Manipulation
User-Defined Functions and Symbolic Manipulation
You can use a user-defined function as an argument for the TI-89 Titanium ’s built-in 
algebra and calculus functions.
Find a 6th order Taylor polynomial for 
sin(x) 
with respect to x.
Store the answer as a user-defined function 
named 
y1(x).
Then graph 
sin(x) and the Taylor polynomial.
taylor(expression, var, order [,point])
if omitted, expansion point is 0
Graph sin(x):Graph 
y1(x)










