20 Keyboard Basics
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-84PlusCE 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.
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