Notes And Hints - Texas Instruments TI-89 Manual Book

Notes and Hints

•
Radian angle mode is recommended for complex number
calculations if the Complex Format mode setting is
Internally, the TI-89 / TI-92 Plus / Voyage™ 200 PLT
converts all entered trigonometry values to radians, but it
does not convert values for exponential, logarithmic, or
hyperbolic functions.
•
The values of non-real roots are shown on the Solutions
screen only if the Complex Format mode setting is
Rectangular
screen displays
•
0 is not a valid entry for a
coefficient without entering a value, 0 is entered
automatically. If you press ¸ on a
value, 1 is entered automatically.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Polynomial Root Finder App
or . If the format is Real, the Solutions
Polar
.
Non-Real
. If you press ¸ on any other
n
Polar
without entering a
n
.
Page 13