E – 14
File name : SR19-English.doc
vision : 2003/08/24
(Note) : When using those keys, make sure the calculator is set
for the angle unit you want.
2–11
Hyperbolic / Inverse-Hyp. Functions
SRP-280 / SRP-285 uses [ 2nd ] [ HYP ] to calculate the hyperbolic
functions and inverse- hyperbolic functions – sinh, cosh, tanh, sinh
–1
,
cosh
–1
and tanh
–1
. See Example 32.
(Note) : When using those keys, make sure the calculator is set
for the angle unit you want.
2–12 Coordinates
Transformation
Pressing [ 2nd ] [ R
P ] displays a menu to convert rectangular
coordinates to polar coordinates or vice versa. See Example 33.
Rectangular Coordinates
Polar Coordinates
x + y i = r (cos
θ
+ i sin
θ
)
(Note) : When using those key, make sure the calculator is set
for the angle unit you want.
2–13 Probability
z
Pressing [ PRB ] displays the probability menu. See Example 34.
With the following functions :
nPr
Calculates the number of possible permutations of n item
taken r at a time.
nCr
Calculates the number of possible combinations of n
items taken r at a time.
!
Calculates the factorial of a specified positive integer n ,
where n
≦
69.
< SRP-280 >
RANDM
Generates a random number between 0 and 1.
< SRP-285 >
RAND
Generates a random number between 0 and 1.
2–14
Other Functions ( X
–1
,
√
,
X
, X
2
, ^ )
z
The calculator also provides reciprocal ( [ x
–1
] ), square root
( [
√
] ), universal root ( [
X
] ), square ( [ x
2
] ) and
exponentiation ( [ ^ ] ) functions. See Example 35.
