User Manual

22 Setting Up the Calculator Modes
Up to three digits before the decimal and
the power of 10 (to the right of â) is a
multiple of three.
Note:
The keypad contains y D, which displays as â on the calculator. *This â in the display
stands for "x10" and the number entered after â becomes the power of 10. The
calculator notation, â, designates the "x10" part of the number without using extra
parentheses. The calculator then follows the order of operations as expected when using
SCI or ENG notation. This notation, â, is not typically accepted on homework and exams,
and written results should use the standard notation, for example, the 1.234567 x 10
4
.
If you select NORMAL notation, but the answer cannot display in 10 digits (or the
absolute value is less than .001), the TI-84PlusCE expresses the answer in scientific
notation.
FLOAT 0 1 2 3 4 5 6 7 8 9
FLOAT (floating) decimal mode displays up to 10 digits, plus the sign and decimal.
FLOAT will display in the status bar.
Selecting 0123456789 specifies the number of digits (0 through 9) to display to the
right of the decimal for decimal answers. FIX# will display in the status bar.
The decimal setting applies to NORMAL, SCI, and ENG notation modes.
The decimal setting applies to these numbers, with respect to the ANSWER mode
setting:
• An answer displayed on the home screen
• Coordinates on a graph
• The Tangent( DRAW instruction equation of the line, x, and dy/dx values
• Results of calculated operations
• The regression equation stored after the execution of a regression model
RADIAN DEGREE
Angle modes control how the calculator interprets angle values in trigonometric
functions and polar/rectangular conversions. The RADIAN or DEGREE setting will
display in the status bar.
RADIAN mode interprets angle values as radians. Answers display in radians.
DEGREE mode interprets angle values as degrees. Answers display in degrees. Polar
complex number arguments are always interpreted in radians.