Texas Instruments TI-89 Voyage 200, User Manual

Page: 887 / 1008

Appendix A: Functions and Instructions 887
tan(
squareMatrix1
)
⇒ ⇒ ⇒ ⇒
squareMatrix
Returns the matrix tangent of
squareMatrix1
. This
is not the same as calculating the tangent of each
element. For information about the calculation
method, refer to
cos()
.
squareMatrix1
must be diagonalizable. The result
always contains floating-point numbers.
In Radian angle mode:
tan([1,5,3;4,2,1;6,
ë
2,1])
¸






ë
28.291… 26.088… 11.114…
12.117…
ë
7.835…
ë
5.481…
36.818…
ë
32.806…
ë
10.459…
tan
ê
()
¥ S key
tan ê (
expression1
)
⇒ ⇒ ⇒ ⇒
expression
tan ê (
list1
)
⇒ ⇒ ⇒ ⇒
list
tan ê (
expression1
)
returns the angle whose
tangent is
expression1
as an expression.
tan ê (
list1
)
returns a list of the inverse tangents
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:
tan
ê
(1)
¸
45
In Gradian angle mode:
tan
ê
(1)
¸
50
In Radian angle mode:
tan
ê
({0,.2,.5})
¸
{0 .197
...
.463
...
}
tan ê (
squareMatrix1
)
⇒
⇒ ⇒
⇒
squareMatrix
Returns the matrix inverse tangent of
squareMatrix1 . This is
not
the same as calculating
the inverse tangent of each element. For
information about the calculation method, refer
to
cos()
.
squareMatrix1
must be diagonalizable. The result
always contains floating-point numbers.
In Radian angle mode:
tan
ê
([1,5,3;4,2,1;6,
ë
2,1])
¸






ë
.083… 1.266… .622…
.748… .630…
ë
.070…
1.686…
ë
1.182… .455…
tanh()
MATH/Hyperbolic menu
tanh(
expression1
)
⇒
⇒ ⇒
⇒
expression
tanh(
list1
)
⇒
⇒ ⇒
⇒
list
tanh(
expression1
)
returns the hyperbolic tangent
of the argument as an expression.
tanh(
list
)
returns a list of the hyperbolic tangents
of each element of list1 .
tanh(1.2)
¸
.833
...
tanh({0,1})
¸
{0 tanh(1)}
tanh(
squareMatrix1
)
⇒
⇒ ⇒
⇒
squareMatrix
Returns the matrix hyperbolic tangent of
squareMatrix1
. This is
not
the same as calculating
the hyperbolic tangent of each element. For
information about the calculation method, refer
to
cos()
.
squareMatrix1 must be diagonalizable. The result
always contains floating-point numbers.
In Radian angle mode:
tanh([1,5,3;4,2,1;6,
ë
2,1])
¸






ë
.097… .933… .425…
.488… .538…
ë
.129…
1.282…
ë
1.034… .428…