| Type: | Package |
| Title: | Functions and Datasets for Math Used in School |
| Description: | Contains functions and datasets for math taught in school. A main focus is set to prime-calculation. |
| Version: | 0.4.2 |
| Date: | 2023-08-21 |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| Depends: | R (≥ 2.10) |
| Encoding: | UTF-8 |
| Language: | en-US |
| LazyData: | true |
| NeedsCompilation: | no |
| RoxygenNote: | 7.2.3 |
| Packaged: | 2023-08-21 12:43:11 UTC; produnis |
| Author: | Jörg große Schlarmann [aut, cre], Josef Wienand [ctb] |
| Maintainer: | Jörg große Schlarmann <schlarmann@produnis.de> |
| Repository: | CRAN |
| Date/Publication: | 2023-08-21 14:20:02 UTC |
cancel a fraction to the smallest numbers
Description
returns a frequency table with absolute and relative frequencies and cumulated frequencies
Usage
cancel.fraction(numerator, denominator)
Arguments
numerator |
the fraction's numerator |
denominator |
the fraction's denominator #' |
Value
Character string
Examples
cancel.fraction(40,15)
cancel.fraction(42, 56)
convert a decimal-number into fraction
Description
convert a decimal-number into fraction
Usage
decimal2fraction(decimal, period = 0)
Arguments
decimal |
the decimal number to be converted, given without an repeating ending |
period |
if the decimal places have an repeating ending (period), set the period here. See examples. #' |
Value
a character string with the fraction.
Examples
## converting 23.4323
decimal2fraction(23.4323)
## converting a number with decimal period, e.g. 12.12344444444444444444
decimal2fraction(12.123, 4)
Greatest common divisor of two numbers
Description
Greatest common divisor of two numbers
Usage
gcd(x, y)
Arguments
x |
first number |
y |
second number #' |
Value
numeric greatest common divisor
Examples
gcd(42, 56)
checks if a number is decimal or integer
Description
checks if a number is decimal or integer
Usage
is.decimal(x)
Arguments
x |
the number to check #' |
Value
true or false
Examples
is.decimal(40.15)
is.decimal(4015)
checks if a number or vector is even
Description
checks if a number or vector is even
Usage
is.even(x)
Arguments
x |
the number to check #' |
Value
true or false
Examples
is.even(45)
is.even(46)
x <- c(1,2,3,4,5, 6, 7)
is.even(x)
check whether numbers of a vector are negative
Description
check whether numbers of a vector are negative
Usage
is.negative(x)
Arguments
x |
the number or vector to check #' |
Value
true or false
Examples
is.negative(3) # this will return FALSE
is.negative(-2) # this will return TRUE
x <- c(-1, -2, 3.02, 4, -5.2, 6, -7)
is.negative(x)
checks if a number or vector is odd
Description
checks if a number or vector is odd
Usage
is.odd(x)
Arguments
x |
the number or vector to check #' |
Value
true or false
Examples
is.odd(45)
is.odd(46)
x <- c(1,2,3,4,5, 6, 7)
is.odd(x)
check whether numbers of a vector are positive
Description
check whether numbers of a vector are positive
Usage
is.positive(x)
Arguments
x |
the number or vector to check #' |
Value
true or false
Examples
is.positive(-3) # this will return FALSE
is.positive(2) # this will return TRUE
x <- c(-1, -2, 3.02, 4, -5.2, 6, -7)
is.positive(x)
check whether a vector contains prime-numbers
Description
check whether a vector contains prime-numbers
Usage
is.prim(y)
Arguments
y |
the number or vector to check |
Value
true or false
Examples
is.prim(8) # this will return FALSE
is.prim(11) # this will return TRUE
x <- c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
is.prim(x)
check whether numbers of a vector are real positive. Real positive means, that zero is included as a positive number.
Description
check whether numbers of a vector are real positive. Real positive means, that zero is included as a positive number.
Usage
is.real.positive(x)
Arguments
x |
the number or vector to check #' |
Value
true or false
Examples
is.real.positive(-3) # this will return FALSE
is.real.positive(0) # this will return TRUE
x <- c(0, -1, -2, 3.02, 4, -5.2, 6, -7)
is.real.positive(x)
check whether a vector contains numbers with decimal places
Description
check whether a vector contains numbers with decimal places
Usage
is.whole(x)
Arguments
x |
the number or vector to check #' |
Value
true or false
Examples
is.whole(3.12) # this will return FALSE
is.whole(2) # this will return TRUE
x <- c(1, 2, 3, 4, 5.5, 6.03, 23.07)
is.whole(x)
This function calculates the prime-factors of a number
Description
This function calculates the prime-factors of a number
Usage
prime.factor(n)
Arguments
n |
the number to be checked #' |
Value
a vector with the prime factors
Examples
prime.factor(21)
prime.factor(100)
generate prime-numbers in a range from START to END
Description
generate prime-numbers in a range from START to END
Usage
primes(start = 12, end = 9999)
Arguments
start |
the number to start from |
end |
the number to end #' |
Value
a vector of prime numbers
Examples
primes(12,150) # list prime-numbers between 12 and 150
A vector containing primes from 0 to 9999999
Description
Contains primes from 0 to 9999999
Usage
data(primlist)
Format
A vector containing primes from 0 to 9999999
Details
Variables in the dataset:
primlist. A vector containing primes from 0 to 9999999
calculating the smallest common multiple of two numbers
Description
calculating the smallest common multiple of two numbers
Usage
scm(x, y)
Arguments
x |
first number |
y |
second number #' |
Value
numeric least common multiple
Examples
scm(3528, 3780)