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798 Appendix A: Functions and Instructions
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(45) ¸ ‡2
In Gradian angle mode:
csc(50) ¸ ‡
‡‡
‡2
22
2
In Radian angle mode:
csc({1,p/2,p/3}) ¸
{
1
sin(1)
1
2 ¦ 3
3
}
csc
L
LL
L1
() MATH/Trig menu
csc
-1
(
expression1
) ⇒
⇒⇒
⇒
expression
csc
-1
(
list1
) ⇒
⇒⇒
⇒
list
Returns the angle whose cosecant is
expression1
or returns a list containing the inverse cosecants
of each element of
list1
.
Note: The result is returned as a degree, gradian
or radian angle, according to the current angle
mode setting.
In Degree angle mode:
csc
L1
(1) ¸ 90
In Gradian angle mode:
csc
L1
(1) ¸ 100
In Radian angle mode:
csc
L1
({1,4,6}) ¸
{
p
2
sin
L1
(1/4)
sin
L1
(1/6)
}
csch() MATH/Hyperbolic menu
csch(
expression1
) ⇒
⇒⇒
⇒
expression
csch(
list1
) ⇒
⇒⇒
⇒
list
Returns the hyperbolic cosecant of
expression1
or
returns a list of the hyperbolic cosecants of all
elements of
list1
.
csch(3) ¸
1
sinh(3)
csch({1,2.1,4}) ¸
{
1
sinh(1)
.248…
1
sinh(4)
}
csch
L
LL
L1
() MATH/Hyperbolic menu
csch
L
LL
L1
(
expression1
) ⇒
⇒⇒
⇒
expression
csch
L
LL
L1
(
list1
) ⇒
⇒⇒
⇒
list
Returns the inverse hyperbolic cosecant of
expression1
or returns a list containing the
inverse hyperbolic cosecants of each element of
list1
.
csch
L1
(1) ¸ sinh
-1
(1)
csch
L1
({1,2.1,3}) ¸
{sinh
L1
(1) .459… sinh
L1
(1/3)}
cSolve() MATH/Algebra/Complex menu
cSolve(
equation
,
var
) ⇒
⇒⇒
⇒
Boolean expression
Returns candidate complex solutions of an
equation for
var
. The goal is to produce
candidates for all real and non-real solutions.
Even if
equation
is real, cSolve() allows non-real
results in real mode.
Although the TI-89 Titanium/Voyage™ 200
processes all undefined variables that do not end
with an underscore (_) as if they were real,
cSolve() can solve polynomial equations for
complex solutions.
cSolve(x^3=ë 1,x) ¸
solve(x^3=ë 1,x) ¸