An introduction to the TI-68 advanced
scientific calculator.


To begin...
Press ON . To set the calculator, press 3rd [RESET].
Press these keys to respond to the displayed prompts:
Press ALPHA Y
Press ALPHA Y
Press ALPHA Y.
Entering and solving equations is straightforward.
Calculate 82 x log (252" / .03125).
To enter the expression, press
8 x2 x LOG ( _ 25 yX 2.5 .03125
As you fill the display, notice how it scrolls to show the most recent keystrokes.
Evaluate the entry by pressing ENTER .
Use the Last Equation Replay feature to retrieve the last equation,
edit it and find the new result. Change .03125 to .3125.
Retrieve the expression by pressing 2nd [EQU].
To edit the expression, press - to position the cursor at the 0.
Delete the 0 by pressing 3rd [DEL].
Evaluate the entry by pressing ENTER
The TI-68 evaluates 40 complex-number functions
from simple arithmetic to advanced trigonometry.
Find the product of two rectangular complex numbers.
(5.18, 5.7) x (6.24, 6) = ?
To enter the expression, press
( 5.18 , 5.7 ) x ( 6.24 , 6
Evaluate the entry by pressing ENTER
Find the sum of two polar complex numbers.
(13L22.62) + (5L53.13) = ?
Set the calculator to display four places after the decimal.
To set the fixed decimal, press CLEAR 2nd [FIX] 4.
To enter the expression, press
( 132nd £ 22.62 ) + ( 5 2nd £ 53.13
Evaluate the entry by pressing ENTER
To return the calculator to floating decimal operation,
press 2nd [fix]
Combine complex and real numbers.
(3, -4)- x 10 + (6 L -90) = ?
To enter the expression, press ( 3 ( - ) 4 )
x 10 + ( 6 2nd _ -) 90
Evaluate the entry by pressing ENTER .

Defaults YN?


Clr Mem YN?
Confirm YN?
Cleared
320
82 x log (25y
(25yX 2.5 + .0
(25yX 2.5 - .3
256
(-1.8768,66.648)




(15.0000, 9.0000)
(1.2, -4.4)

5