Fractional Calculations
The Victor V30-RA allows the user to calculate mixed and improper fractions, with the results given as mixed fractions.
[a
b
/
c
]
Used to enter a mixed or improper fraction.
Improper fraction (a/b)
a
(numerator)
→
[a
b
/
c
]
→
b (denominator)
Mixed fraction (a
b
/
c
):
a(integer)
→
[a
b
/
c
]
→
b (numerator)
→
[a
b
/
c
]
→
c (denominator)
[2
nd
] [F
↔
D]
Is used to convert between fractions and decimals.
[2
nd
] [a
b
/
c
↔
d
/
e
]
Is used to convert between mixed numbers and simple fractions.
Example: You want to add 2
1
/
8
to ¾ and after getting the answer, you would like to convert the mixed fraction to a decimal number.
Angles
[DRG]
To specify the Angle mode in degrees, radians, or gradients.
Example: Press the [DRG] key and the bottom of the display will rotate through “DEG”, “RAD”, and “GRD”.
After you see the mode you would like to activate, stop.
[DMS]
Is used to enter degrees (
°
), radians (
r
), gradients (
g
), or Degrees, Minutes, Seconds or DMS (DMS).
This will also let the user convert an angle to DMS Notation using [2
nd
] [
→
DMS].
Trigonometric Functions
[SIN]
Sine
Key
[COS]
Cosine
Key
[TAN]
Tangent
Key
[SIN
-1
]
Arc Sine Key [2
nd
] [SIN]
[COS
-1
]
Arc Cosine Key [2
nd
] [COS]
[TAN
-1
]
Arc Tangent Key [2
nd
] [TAN]
To perform Hyperbolic
(HYP)
functions on a trigonometric key, press
[HYP]
before pressing the trigonometric key.
Statistical and Probability Keys
[nPr]
Calculates the number of possible permutations of n items taken at r time, given n and r.
[nCr]
Calculates the number of possible combinations of n items taken r at a time, given n and r.
[x!]
Factorials, the product of the positive integer from 1 to n.
[
δ
x]
Standard deviation of x.
[
∑
x]
Sum of x values.
[
∑
x
2
]
Sum of x
2
values.
[
ξ
]
Mean of all x values.
[n]
Number of x data points.
Function Keys
[LN]
Natural Logarithm Key
[e
x
]
Exponential Function Key
[x
2
]
Square
Key
Enter:
[2] [
a
b
/
c
] [1] [ a
b
/
c
] [8]
[+]
[3] [
a
b
/
c
] [4]
[=]
Display:
2 _ 1 _, 8
2 _ 1 _, 8
3 _, 4
2 _ 7 _, 8
