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1-6-15
Input
k
Using the 2D Keyboard
The 2D keyboard provides you with a number of templates that let you input fractions,
exponential values,
n
th roots, matrices, differentials, integrals, and other complex
expressions as they appear in your textbook.
It also includes a
V
key set that you can use to input single-character variables like the
ones you can input with the math (mth) keyboard.
u
Initial 2D keyboard key set
This key set lets you input fractions, exponential values,
n
th roots, etc. as they appear in your
textbook.
Tip
• For information about each function or symbol, see “2-4 Function Calculations”.
• Use the
1
key to input the piecewise function template. See page 2-4-12 for more information.
• Use the
key to input the simultaneous equations template. See page 2-8-43 for more
information.
u
-
key set
Tapping the
-
key displays a keyboard like the one shown below, which has a
I
key in
place of the
-
key. Tapping
I
returns to the initial 2D keyboard.
The following are the mathematical expressions you can input with this 2D keyboard.
To input this: Use these keys: For more information, see:
Matrix templates
6
,
7
,
8
“Matrix and Vector Calculations” on
page 2-6-1.
Limit template
“lim” under “Using the Calculation
Submenu” on page 2-8-15.
Sum template
“
Σ
” under “Using the Calculation
Submenu” on page 2-8-15.