Texas Instruments Titanium TI-89, Руководство пользователя

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Appendix A: Functions and Instructions 775
cot
L
1
()
MATH/Trig menu
cot
L
1 ( expression1 )
⇒
expression
cot
L
1 ( list1 )
⇒
list
Returns the angle whose cotangent is expression1
or returns a list containing the inverse cotangents of
each element of
list1.
Note: The result is returned as either a degree or
radian angle, according to the current angle mode.
In Degree angle mode:
cot
L 1
(1)
¸
45
In Radian angle mode:
cot
L
1
(1)
¸
p
4
coth()
MATH/Hyperbolic menu
coth(
expression1
)
⇒
expression
cot(
list1
)
⇒
list
Returns the hyperbolic cotangent of expression1 or
returns a list of the hyperbolic cotangents of all
elements of
list1.
coth(1.2)
¸
1.199…
coth({1,3.2})
¸
1
tanh(1)
1.003…
coth
L
1
()
MATH/Hyperbolic menu
coth
L
1
(
expression1
)
⇒
expression
coth
L
1
(
list1
)
⇒
list
Returns the inverse hyperbolic cotangent of
expression1 or returns a list containing the inverse
hyperbolic cotangents of each element of
list1.
coth
L 1
(3.5)
¸
.293…
coth
L 1
({
L
2,2.1,6})
¸
L
ln(3)
2
.518…
ln(7/5)
2
crossP()
MATH/Matrix/Vector ops menu
crossP(
list1
,
list2
)
⇒
list
Returns the cross product of
list1
and
list2
as a list.
list1 and list2 must have equal dimension, and the
dimension must be either 2 or 3.
crossP({a1,b1},{a2,b2})
¸
{0 0 a1
ø
b2
ì
a2
ø
b1}
crossP({0.1,2.2,
ë
5},{1,
ë
.5,0})
¸
{ ë 2.5 ë 5. ë 2.25}
crossP( vector1 , vector2 )
⇒
vector
Returns a row or column vector (depending on the
arguments) that is the cross product of
vector1
and
vector2
.
Both
vector1
and
vector2
must be row vectors, or
both must be column vectors. Both vectors must
have equal dimension, and the dimension must be
either 2 or 3.
crossP([1,2,3],[4,5,6])
¸
[
ë
3 6
ë
3]
crossP([1,2],[3,4])
¸
[0 0
ë
2]
csc()
MATH/Trig menu
csc(
expression1
)
⇒
expression
csc(
list1
)
⇒
list
Returns the cosecant of expression1 or returns a list
containing the cosecants of all elements in list1.
In Degree angle mode:
csc(
p
/4)
¸
1
sin(
p
4
)
In Radian angle mode:
csc({1, p /2, p /3}) ¸
1
sin(1)
1
2 ¦ 3
3