Texas Instruments TI-89 Manual Book page 477

lcm()
MATH/Number menu
lcm(number1, number2)
lcm(list1, list2)
lcm(matrix1, matrix2)
Returns the least common multiple of the
two arguments. The
the of their numerators divided by the
lcm
gcd of their denominators. The
fractional floating-point numbers is their
product.
For two lists or matrices, returns the least
common multiples of the corresponding
elements.
left()
MATH/String menu
left(sourceString[, num])
Returns the leftmost
contained in character string
If you omit
left(list1[, num])
Returns the leftmost
in .
list1
If you omit
left(comparison)
Returns the left-hand side of an equation or
inequality.
limit()
MATH/Calculus menu
limit(expression1, var, point[, direction])
expression
limit(list1, var, point[, direction])
limit(matrix1, var, point[, direction])
Returns the limit requested.
direction: negative=from left, positive=from
right, otherwise=both. (If omitted,
defaults to both.)
Limits at positive ˆ and at negative ˆ are
always converted to one-sided limits from the
finite side.
Depending on the circumstances,
returns itself or
determine a unique limit. This does not
necessarily mean that a unique limit does not
exist.
undef
unknown number with finite or infinite
magnitude, or it is the entire set of such
numbers.
460 Appendix A: Functions and Instructions
expression
list
matrix
of two fractions is
lcm
lcm of
string
characters
num
sourceString
, returns all of
num sourceString
list
elements contained
num
, returns all of .
num list1
expression
list
matrix
direction
limit()
when it cannot
undef
means that the result is either an
lcm(6,9) ¸
lcm({1/3,ë 14,16},{2/15,7,5})
¸
left("Hello",2) ¸
.
.
left({1,3,ë 2,4},3) ¸
left(x<3) ¸
limit(2x+3,x,5) ¸
limit(1/x,x,0,1) ¸
limit(sin(x)/x,x,0) ¸
limit((sin(x+h)-sin(x))/h,h,0)
¸
limit((1+1/n)^n,n,ˆ) ¸
18
{2/3 14 80}
"He"
{1 3 ë 2}
x
13
ˆ
1
cos(x)
e