Texas Instruments TI-86 Manual Book page 311

Func
† mode screen
gcd(
MATH MISC menu
Get(
‡ program editor
I/O menu
4Frac
list
4Frac
matrix
vector 4Frac
Returns a list, matrix, or vector in which each element
is the rational equivalent of the corresponding element
in the argument.
Func
Sets function graphing mode.
gcd( integerA , integerB )
Returns the greatest common divisor of two
nonnegative integers.
gcd( listA , listB )
Returns a list in which each element is the gcd of the
two corresponding elements in listA and listB.
Get( variable )
Gets data from a CBL or CBR System or another TI-86
and stores it to variable.
Chapter 20: A to Z Function and Instruction Reference
{1/2+1/3,1/6
Ans4Frac b
gcd(18,33) b
gcd({12,14,16},{9,7,5}) b
299
3/8}¶L1 b
N
L
{.833333333333 .208...
L
{5/6 5/24}
3
{3 7 1}