[Scheme entry]2 arithmetic operations

1, quotient, remainder, modulo and sqrt

The function is quotient used to calculate the quotient (quotient).

Functions remainder and is modulo used to find the remainder (remainder).

sqrtThe function is used to find the square root of the parameter (square root).

Here are some examples:

(quotient73)

; Value:2

(modulo73)

; Value:1
(sqrt )

; value:3.1622776601683795

2, sin, cos, tan, ASIN, ACOS and Atan

A Atan accepts 1 or 2 parameters. If atan the desired result is 1/2π, use the second parameter to indicate the use of the radian system.

The following are still some examples:

(atan1)

; Value:0.7853981633974483
(atan 1 0)

; Value:1.5707963267948966

(* 4 (Atan 1.0))

; value:3.141592653589793

3, exponent and logarithm

The exponent passes exp the function operation, the logarithm passes the log function operation. a b can be calculated by the power of the second (expt a b) .

(exp 2/3)

; value:1.9477340410546757

(EXPT 3 4)

; value:81

(log 1000)

; value:6.907755278982137

4. Transformation of several numerical values

The function exact->inexact is used to convert fractions to floating-point numbers.

(exact->inexact(/ 3 7))

; Value:1.380952380952381



[Scheme entry]2 arithmetic operations