Hyperbolic / Inverse Hyperbolic Functions; Rectangular / Polar Coordinates; Permutations, Combinations - Datexx DS-834 User Manual

1 ) = ? rad 2 [ √ ] [ 2ndF ] [ 1/X ]
-1
cos (
√
2
-1
tan 1 = ? grad

Hyperbolic / Inverse hyperbolic functions

cosh1.5+sinh1.5 =
-1
sinh 7 =
tanh 1 =

Rectangular / Polar coordinates

Rectangular Coordinates
Y
y
0 x
(Note) : When using those key, make sure the calculator is set for
the angular unit you want.
Converting from Rectangular to Polar
If a = 5 and b = 6
, what are r and θ?
Converting from Polar to Rectangular
If r = 25 and θ = 56°
, what are a and b?

Permutations, Combinations

n !
nPr =
(n – r) !
How many
permutations of 4
items can you select
out of a set of
numbers of 7 items?
[ 2ndF ] [ cos
1 [ 2ndF ] [ tan
1.5 [ HYP ] [ cos ] [ + ]
1.5 [ HYP ] [ sin ] [ = ]
7 [ HYP ] [ 2ndF ] [ sin
1 [ HYP ] [ tan ]
• P( x, y )
X
a + b i= r (cos θ + i sin θ)
5 [ a ] 6 [ b ]
[ 2ndF ] [ R → P]
[ b ]
25 [ a ] 56 [ b ]
[ 2ndF ] [ P → R]
[ b ]
nCr =
7 [ 2ndF ] [ nPr ] 4 [ = ]
- 1
]
- 1
]
Polar Coordinates
Y
0
n !
r ! (n – r) !
E - 12
RAD
GRAD
DEG
-1 DEG
]
DEG
• P( r, θ)
r
θ
DEG
DEG
DEG
DEG
DEG
0.79
50.00
4.48
2.64
0.76
X
7.81
50.19
13.98
20.73
840.00