Texas Instruments TI-82 STATS Getting Started page 37

Performing simple calculations (continued)
Finding the square root
Example: Find the square root of 256.
Press
y C 2 5 6 ¤
Í
Finding the factorial of numbers
Example: Compute the factorial of 5 and 30.
Press
5  ~ ~ ~ 4
Í
3 0  ~ ~ ~ 4
Í
Result
Result
Scientific
notation
33